./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/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 882ea361b7af061cd8d42e5cfb7b075ce7064afa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:00,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:00,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:00,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:00,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:00,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:00,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:00,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:00,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:00,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:00,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:00,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:00,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:00,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:00,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:00,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:00,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:00,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:00,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:00,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:00,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:00,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:00,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:00,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:00,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:00,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:00,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:00,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:00,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:00,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:00,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:00,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:00,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:00,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:00,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:00,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:00,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:00,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:00,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:00,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:00,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:00,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:00,936 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:00,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:00,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:00,937 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:00,938 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:00,938 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:00,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:00,938 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:00,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:00,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:00,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:00,939 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:00,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:00,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:00,940 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:00,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:00,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:00,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:00,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:00,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:00,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:00,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:00,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:00,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:00,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:00,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:00,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:00,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:00,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:00,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:00,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:00,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:00,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:00,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:00,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:00,951 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:00,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:00,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:00,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:00,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:00,953 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_647ce605-5ddc-4bd7-bf48-e6401df304a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 882ea361b7af061cd8d42e5cfb7b075ce7064afa [2020-11-28 07:40:01,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:01,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:01,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:01,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:01,264 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:01,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2020-11-28 07:40:01,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/data/86a148524/90b89452642b4eeab8f6befa4a842367/FLAG9536158c5 [2020-11-28 07:40:01,944 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:01,945 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2020-11-28 07:40:01,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/data/86a148524/90b89452642b4eeab8f6befa4a842367/FLAG9536158c5 [2020-11-28 07:40:02,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/data/86a148524/90b89452642b4eeab8f6befa4a842367 [2020-11-28 07:40:02,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:02,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:02,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:02,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:02,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:02,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:02,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abeaa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02, skipping insertion in model container [2020-11-28 07:40:02,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:02,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:02,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:02,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:02,796 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:02,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:02,957 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:02,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02 WrapperNode [2020-11-28 07:40:02,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:02,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:02,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:02,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:02,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:02,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:03,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:03,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:03,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:03,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:03,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:03,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:03,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:03,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:03,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:03,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:03,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... [2020-11-28 07:40:03,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:03,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:03,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:03,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:03,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/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 [2020-11-28 07:40:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:40:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:40:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:40:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 07:40:03,175 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 07:40:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 07:40:03,175 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 07:40:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 07:40:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 07:40:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:40:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:03,180 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:40:03,645 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:03,645 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:40:03,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:03 BoogieIcfgContainer [2020-11-28 07:40:03,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:03,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:03,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:03,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:03,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:02" (1/3) ... [2020-11-28 07:40:03,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4279a8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:03, skipping insertion in model container [2020-11-28 07:40:03,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:02" (2/3) ... [2020-11-28 07:40:03,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4279a8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:03, skipping insertion in model container [2020-11-28 07:40:03,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:03" (3/3) ... [2020-11-28 07:40:03,668 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-11-28 07:40:03,679 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:40:03,679 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:03,684 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:03,685 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:40:03,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,722 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,723 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,725 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,726 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,726 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,726 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,727 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,727 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,727 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,730 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,750 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,750 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:40:03,763 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:40:03,773 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:40:03,796 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:03,796 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:03,796 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:03,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:03,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:03,797 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:03,797 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:03,797 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:03,810 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:40:03,812 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 07:40:03,816 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 07:40:03,818 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 07:40:03,869 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 07:40:03,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:40:03,874 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 07:40:03,877 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 07:40:06,189 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-28 07:40:06,296 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-28 07:40:06,341 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-28 07:40:06,341 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 07:40:06,346 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 07:40:06,409 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 07:40:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 07:40:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:40:06,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:06,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:06,420 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:06,426 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-28 07:40:06,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:06,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229464610] [2020-11-28 07:40:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:06,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229464610] [2020-11-28 07:40:06,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:06,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:06,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909053335] [2020-11-28 07:40:06,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:40:06,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:06,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:40:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:40:06,636 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 07:40:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:06,671 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 07:40:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:40:06,673 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:40:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:06,689 INFO L225 Difference]: With dead ends: 362 [2020-11-28 07:40:06,689 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 07:40:06,690 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 [2020-11-28 07:40:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 07:40:06,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 07:40:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 07:40:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 07:40:06,765 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 07:40:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:06,766 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 07:40:06,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:40:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 07:40:06,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:40:06,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:06,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:06,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:06,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:06,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:06,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-28 07:40:06,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:06,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899776811] [2020-11-28 07:40:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:06,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899776811] [2020-11-28 07:40:06,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:06,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:06,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903675939] [2020-11-28 07:40:06,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:06,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:06,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:06,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:06,948 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-28 07:40:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:07,041 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-28 07:40:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:07,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:40:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:07,049 INFO L225 Difference]: With dead ends: 330 [2020-11-28 07:40:07,049 INFO L226 Difference]: Without dead ends: 266 [2020-11-28 07:40:07,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-28 07:40:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-28 07:40:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 07:40:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-28 07:40:07,075 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-28 07:40:07,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:07,076 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-28 07:40:07,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:07,076 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-28 07:40:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:40:07,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:07,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:07,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:07,078 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:07,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:07,079 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-28 07:40:07,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:07,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268119866] [2020-11-28 07:40:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:07,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268119866] [2020-11-28 07:40:07,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:07,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:07,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100234758] [2020-11-28 07:40:07,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:07,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:07,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:07,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:07,239 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-11-28 07:40:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:07,376 INFO L93 Difference]: Finished difference Result 338 states and 914 transitions. [2020-11-28 07:40:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:40:07,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 07:40:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:07,380 INFO L225 Difference]: With dead ends: 338 [2020-11-28 07:40:07,380 INFO L226 Difference]: Without dead ends: 194 [2020-11-28 07:40:07,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:40:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-28 07:40:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-28 07:40:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-28 07:40:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 494 transitions. [2020-11-28 07:40:07,397 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 494 transitions. Word has length 10 [2020-11-28 07:40:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:07,401 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 494 transitions. [2020-11-28 07:40:07,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 494 transitions. [2020-11-28 07:40:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:40:07,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:07,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:07,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:40:07,406 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:07,407 INFO L82 PathProgramCache]: Analyzing trace with hash 150494398, now seen corresponding path program 1 times [2020-11-28 07:40:07,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:07,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427430365] [2020-11-28 07:40:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:07,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427430365] [2020-11-28 07:40:07,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:07,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:07,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010040539] [2020-11-28 07:40:07,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:07,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:07,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:07,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:07,500 INFO L87 Difference]: Start difference. First operand 194 states and 494 transitions. Second operand 4 states. [2020-11-28 07:40:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:07,521 INFO L93 Difference]: Finished difference Result 206 states and 508 transitions. [2020-11-28 07:40:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:07,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 07:40:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:07,523 INFO L225 Difference]: With dead ends: 206 [2020-11-28 07:40:07,524 INFO L226 Difference]: Without dead ends: 182 [2020-11-28 07:40:07,524 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 [2020-11-28 07:40:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-28 07:40:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-11-28 07:40:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-28 07:40:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 456 transitions. [2020-11-28 07:40:07,536 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 456 transitions. Word has length 12 [2020-11-28 07:40:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:07,537 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 456 transitions. [2020-11-28 07:40:07,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 456 transitions. [2020-11-28 07:40:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:07,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:07,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:07,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:07,539 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:07,540 INFO L82 PathProgramCache]: Analyzing trace with hash -10402391, now seen corresponding path program 1 times [2020-11-28 07:40:07,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:07,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334831737] [2020-11-28 07:40:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:07,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334831737] [2020-11-28 07:40:07,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:07,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:07,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580518669] [2020-11-28 07:40:07,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:07,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:07,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:07,662 INFO L87 Difference]: Start difference. First operand 182 states and 456 transitions. Second operand 5 states. [2020-11-28 07:40:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:07,720 INFO L93 Difference]: Finished difference Result 194 states and 473 transitions. [2020-11-28 07:40:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:07,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:40:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:07,722 INFO L225 Difference]: With dead ends: 194 [2020-11-28 07:40:07,723 INFO L226 Difference]: Without dead ends: 158 [2020-11-28 07:40:07,723 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 [2020-11-28 07:40:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-28 07:40:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-11-28 07:40:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-28 07:40:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-11-28 07:40:07,731 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 13 [2020-11-28 07:40:07,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:07,732 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-11-28 07:40:07,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-11-28 07:40:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:07,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:07,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:07,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:40:07,734 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1736979236, now seen corresponding path program 1 times [2020-11-28 07:40:07,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:07,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192873833] [2020-11-28 07:40:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:07,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192873833] [2020-11-28 07:40:07,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:07,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:07,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927432142] [2020-11-28 07:40:07,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:07,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:07,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:07,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:07,845 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 5 states. [2020-11-28 07:40:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:07,883 INFO L93 Difference]: Finished difference Result 236 states and 587 transitions. [2020-11-28 07:40:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:07,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:40:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:07,885 INFO L225 Difference]: With dead ends: 236 [2020-11-28 07:40:07,885 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 07:40:07,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 07:40:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 07:40:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 07:40:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-11-28 07:40:07,892 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-11-28 07:40:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:07,893 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-11-28 07:40:07,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-11-28 07:40:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:07,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:07,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:07,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:40:07,898 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:07,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1184784502, now seen corresponding path program 2 times [2020-11-28 07:40:07,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:07,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523050634] [2020-11-28 07:40:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:07,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523050634] [2020-11-28 07:40:07,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:07,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:07,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579324617] [2020-11-28 07:40:07,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:07,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:07,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:07,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:07,994 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 5 states. [2020-11-28 07:40:08,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:08,057 INFO L93 Difference]: Finished difference Result 158 states and 381 transitions. [2020-11-28 07:40:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:08,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:40:08,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:08,058 INFO L225 Difference]: With dead ends: 158 [2020-11-28 07:40:08,058 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 07:40:08,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 07:40:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-28 07:40:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 07:40:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-11-28 07:40:08,063 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-11-28 07:40:08,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:08,063 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-11-28 07:40:08,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-11-28 07:40:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:40:08,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:08,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:08,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:40:08,065 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:08,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-11-28 07:40:08,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:08,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299339237] [2020-11-28 07:40:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:08,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299339237] [2020-11-28 07:40:08,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:08,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:08,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427417391] [2020-11-28 07:40:08,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:08,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:08,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:08,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:08,149 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-11-28 07:40:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:08,174 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-11-28 07:40:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:08,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 07:40:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:08,175 INFO L225 Difference]: With dead ends: 91 [2020-11-28 07:40:08,176 INFO L226 Difference]: Without dead ends: 69 [2020-11-28 07:40:08,176 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 [2020-11-28 07:40:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-28 07:40:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-28 07:40:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 07:40:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-11-28 07:40:08,179 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-11-28 07:40:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:08,180 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-11-28 07:40:08,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:08,180 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-11-28 07:40:08,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:40:08,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:08,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:08,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:40:08,181 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:08,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:08,182 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-11-28 07:40:08,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:08,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229918989] [2020-11-28 07:40:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:08,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229918989] [2020-11-28 07:40:08,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:08,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:08,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075519111] [2020-11-28 07:40:08,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:08,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:08,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:08,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:08,262 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-11-28 07:40:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:08,314 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-11-28 07:40:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:08,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 07:40:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:08,316 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:40:08,316 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 07:40:08,317 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 [2020-11-28 07:40:08,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 07:40:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-28 07:40:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 07:40:08,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-11-28 07:40:08,319 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-11-28 07:40:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:08,320 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-11-28 07:40:08,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:08,320 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-11-28 07:40:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:40:08,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:08,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:08,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:40:08,321 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:08,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-11-28 07:40:08,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:08,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896295720] [2020-11-28 07:40:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:08,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896295720] [2020-11-28 07:40:08,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:08,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:08,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468713629] [2020-11-28 07:40:08,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:08,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:08,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:08,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:08,423 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-11-28 07:40:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:08,493 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-11-28 07:40:08,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:08,494 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:40:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:08,494 INFO L225 Difference]: With dead ends: 43 [2020-11-28 07:40:08,495 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 07:40:08,495 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 [2020-11-28 07:40:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 07:40:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 07:40:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 07:40:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-28 07:40:08,497 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-11-28 07:40:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:08,497 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-28 07:40:08,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-28 07:40:08,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:40:08,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:08,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:08,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:40:08,498 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:08,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:08,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-11-28 07:40:08,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:08,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008028904] [2020-11-28 07:40:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:08,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008028904] [2020-11-28 07:40:08,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:08,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:08,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161942007] [2020-11-28 07:40:08,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:08,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:08,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:08,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:08,582 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-11-28 07:40:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:08,610 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-11-28 07:40:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:08,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 07:40:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:08,610 INFO L225 Difference]: With dead ends: 36 [2020-11-28 07:40:08,610 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:08,611 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 [2020-11-28 07:40:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:08,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 07:40:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:08,611 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:08,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:08,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:08,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:40:08,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:08 BasicIcfg [2020-11-28 07:40:08,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:08,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:08,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:08,616 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:08,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:03" (3/4) ... [2020-11-28 07:40:08,624 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:08,631 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 07:40:08,632 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 07:40:08,632 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 07:40:08,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 07:40:08,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:40:08,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:08,639 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:08,701 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_647ce605-5ddc-4bd7-bf48-e6401df304a9/bin/utaipan/witness.graphml [2020-11-28 07:40:08,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:08,703 INFO L168 Benchmark]: Toolchain (without parser) took 6478.73 ms. Allocated memory was 98.6 MB in the beginning and 148.9 MB in the end (delta: 50.3 MB). Free memory was 64.5 MB in the beginning and 80.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:08,707 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 98.6 MB. Free memory was 71.4 MB in the beginning and 71.4 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:08,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.69 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 54.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:08,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.96 ms. Allocated memory is still 98.6 MB. Free memory was 54.7 MB in the beginning and 52.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:08,708 INFO L168 Benchmark]: Boogie Preprocessor took 28.21 ms. Allocated memory is still 98.6 MB. Free memory was 52.5 MB in the beginning and 51.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:08,709 INFO L168 Benchmark]: RCFGBuilder took 607.40 ms. Allocated memory is still 98.6 MB. Free memory was 51.2 MB in the beginning and 69.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:08,709 INFO L168 Benchmark]: TraceAbstraction took 4965.40 ms. Allocated memory was 98.6 MB in the beginning and 148.9 MB in the end (delta: 50.3 MB). Free memory was 68.6 MB in the beginning and 83.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:08,710 INFO L168 Benchmark]: Witness Printer took 86.47 ms. Allocated memory is still 148.9 MB. Free memory was 83.8 MB in the beginning and 80.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:08,712 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 98.6 MB. Free memory was 71.4 MB in the beginning and 71.4 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 730.69 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 54.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.96 ms. Allocated memory is still 98.6 MB. Free memory was 54.7 MB in the beginning and 52.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.21 ms. Allocated memory is still 98.6 MB. Free memory was 52.5 MB in the beginning and 51.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 607.40 ms. Allocated memory is still 98.6 MB. Free memory was 51.2 MB in the beginning and 69.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4965.40 ms. Allocated memory was 98.6 MB in the beginning and 148.9 MB in the end (delta: 50.3 MB). Free memory was 68.6 MB in the beginning and 83.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * Witness Printer took 86.47 ms. Allocated memory is still 148.9 MB. Free memory was 83.8 MB in the beginning and 80.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 955 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 212 SDtfs, 291 SDslu, 345 SDs, 0 SdLazy, 169 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4924 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...