./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.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_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/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 4813f1ecdee15758ab36c7ea84ae454e7bf08642 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:24:36,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:24:36,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:24:36,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:24:36,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:24:36,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:24:36,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:24:36,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:24:36,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:24:36,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:24:36,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:24:36,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:24:36,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:24:36,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:24:36,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:24:36,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:24:36,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:24:36,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:24:36,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:24:36,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:24:36,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:24:36,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:24:36,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:24:36,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:24:36,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:24:36,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:24:36,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:24:37,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:24:37,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:24:37,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:24:37,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:24:37,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:24:37,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:24:37,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:24:37,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:24:37,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:24:37,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:24:37,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:24:37,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:24:37,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:24:37,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:24:37,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:24:37,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:24:37,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:24:37,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:24:37,067 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:24:37,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:24:37,067 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:24:37,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:24:37,068 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:24:37,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:24:37,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:24:37,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:24:37,070 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:24:37,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:24:37,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:24:37,071 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:24:37,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:24:37,072 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:24:37,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:24:37,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:24:37,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:24:37,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:24:37,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:24:37,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:24:37,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:24:37,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:24:37,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:24:37,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:24:37,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:24:37,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:24:37,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:24:37,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:24:37,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:24:37,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:24:37,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:24:37,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:24:37,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:24:37,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:24:37,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:24:37,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:24:37,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:24:37,078 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_4df187d2-4de2-4565-a23a-c41ba2384db6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4813f1ecdee15758ab36c7ea84ae454e7bf08642 [2020-11-30 02:24:37,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:24:37,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:24:37,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:24:37,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:24:37,430 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:24:37,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-11-30 02:24:37,518 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/data/2cd746136/50cdbf98d12a4d2b80ae191294c2d91b/FLAG101c565f2 [2020-11-30 02:24:38,171 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:24:38,171 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-11-30 02:24:38,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/data/2cd746136/50cdbf98d12a4d2b80ae191294c2d91b/FLAG101c565f2 [2020-11-30 02:24:38,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/data/2cd746136/50cdbf98d12a4d2b80ae191294c2d91b [2020-11-30 02:24:38,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:24:38,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:24:38,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:24:38,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:24:38,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:24:38,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:24:38" (1/1) ... [2020-11-30 02:24:38,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3582e231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:38, skipping insertion in model container [2020-11-30 02:24:38,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:24:38" (1/1) ... [2020-11-30 02:24:38,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:24:38,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:24:38,771 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-30 02:24:39,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:24:39,174 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:24:39,207 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-30 02:24:39,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:24:39,474 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:24:39,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39 WrapperNode [2020-11-30 02:24:39,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:24:39,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:24:39,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:24:39,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:24:39,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:24:39,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:24:39,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:24:39,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:24:39,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... [2020-11-30 02:24:39,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:24:39,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:24:39,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:24:39,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:24:39,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/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 [2020-11-30 02:24:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 02:24:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:24:39,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:24:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 02:24:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:24:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2020-11-30 02:24:39,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2020-11-30 02:24:39,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-11-30 02:24:39,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-11-30 02:24:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-11-30 02:24:39,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-11-30 02:24:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-11-30 02:24:39,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-11-30 02:24:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:24:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 02:24:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:24:39,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:24:39,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:24:39,668 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 02:24:40,336 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:24:40,336 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-30 02:24:40,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:24:40 BoogieIcfgContainer [2020-11-30 02:24:40,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:24:40,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:24:40,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:24:40,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:24:40,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:24:38" (1/3) ... [2020-11-30 02:24:40,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232507ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:24:40, skipping insertion in model container [2020-11-30 02:24:40,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:24:39" (2/3) ... [2020-11-30 02:24:40,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232507ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:24:40, skipping insertion in model container [2020-11-30 02:24:40,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:24:40" (3/3) ... [2020-11-30 02:24:40,347 INFO L111 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2020-11-30 02:24:40,358 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 02:24:40,359 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:24:40,364 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:24:40,364 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 02:24:40,415 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,416 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,416 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,416 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,416 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,416 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,417 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,417 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,417 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,417 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,418 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,418 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,418 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,418 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,418 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,419 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,419 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,419 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,419 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,419 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,420 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,420 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,421 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,421 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,421 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,421 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,422 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,422 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,422 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,422 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,422 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,422 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,423 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,423 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,423 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,423 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,423 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,424 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,424 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,424 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,424 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,424 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,425 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,425 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,425 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,425 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,425 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,425 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,426 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,426 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,426 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,426 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,426 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,427 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,427 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,427 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,427 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,427 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,428 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,428 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,428 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,428 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,428 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,428 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,429 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,429 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,429 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,430 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,431 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,432 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,432 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,432 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,433 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,433 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,433 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,433 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,433 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,435 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,436 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,436 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,436 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,436 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,436 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,438 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,439 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,439 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,439 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,448 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,448 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,448 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,451 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,451 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,452 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,452 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,455 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,455 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,458 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,458 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,459 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,459 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,459 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,459 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,459 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,459 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,459 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,460 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,460 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,460 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,460 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,460 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,460 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,461 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,461 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,461 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,461 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,461 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,461 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,461 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,462 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,462 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,467 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,467 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,467 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,468 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,468 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,468 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,472 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,475 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,475 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,475 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,475 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,481 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,482 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,482 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,482 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:24:40,659 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2020-11-30 02:24:40,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-11-30 02:24:40,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:24:40,696 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:24:40,696 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:24:40,696 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:24:40,696 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:24:40,696 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:24:40,697 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:24:40,697 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:24:40,725 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 02:24:40,728 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 259 transitions, 898 flow [2020-11-30 02:24:40,732 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 259 transitions, 898 flow [2020-11-30 02:24:40,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 186 places, 259 transitions, 898 flow [2020-11-30 02:24:40,791 INFO L129 PetriNetUnfolder]: 10/124 cut-off events. [2020-11-30 02:24:40,792 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-30 02:24:40,797 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 124 events. 10/124 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 144. Up to 5 conditions per place. [2020-11-30 02:24:40,801 INFO L116 LiptonReduction]: Number of co-enabled transitions 1648 [2020-11-30 02:24:42,765 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-11-30 02:24:42,870 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-30 02:24:43,662 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-11-30 02:24:43,961 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-30 02:24:44,104 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-30 02:24:44,410 INFO L131 LiptonReduction]: Checked pairs total: 22144 [2020-11-30 02:24:44,410 INFO L133 LiptonReduction]: Total number of compositions: 94 [2020-11-30 02:24:44,416 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 176 transitions, 732 flow [2020-11-30 02:24:44,540 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 998 states. [2020-11-30 02:24:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states. [2020-11-30 02:24:44,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:24:44,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:44,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:44,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:44,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:44,555 INFO L82 PathProgramCache]: Analyzing trace with hash -299289812, now seen corresponding path program 1 times [2020-11-30 02:24:44,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:44,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896930596] [2020-11-30 02:24:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:44,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896930596] [2020-11-30 02:24:44,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:44,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:24:44,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100787658] [2020-11-30 02:24:44,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:24:45,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:45,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:24:45,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:24:45,021 INFO L87 Difference]: Start difference. First operand 998 states. Second operand 5 states. [2020-11-30 02:24:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:45,354 INFO L93 Difference]: Finished difference Result 1381 states and 4916 transitions. [2020-11-30 02:24:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:24:45,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 02:24:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:45,399 INFO L225 Difference]: With dead ends: 1381 [2020-11-30 02:24:45,399 INFO L226 Difference]: Without dead ends: 1082 [2020-11-30 02:24:45,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:24:45,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-11-30 02:24:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 785. [2020-11-30 02:24:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-30 02:24:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2806 transitions. [2020-11-30 02:24:45,572 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2806 transitions. Word has length 10 [2020-11-30 02:24:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:45,573 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2806 transitions. [2020-11-30 02:24:45,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:24:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2806 transitions. [2020-11-30 02:24:45,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:24:45,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:45,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:45,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:24:45,575 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1610347620, now seen corresponding path program 2 times [2020-11-30 02:24:45,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:45,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182140852] [2020-11-30 02:24:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:45,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182140852] [2020-11-30 02:24:45,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:45,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:24:45,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284876124] [2020-11-30 02:24:45,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:24:45,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:45,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:24:45,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:24:45,658 INFO L87 Difference]: Start difference. First operand 785 states and 2806 transitions. Second operand 3 states. [2020-11-30 02:24:45,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:45,677 INFO L93 Difference]: Finished difference Result 841 states and 2942 transitions. [2020-11-30 02:24:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:24:45,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-30 02:24:45,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:45,687 INFO L225 Difference]: With dead ends: 841 [2020-11-30 02:24:45,687 INFO L226 Difference]: Without dead ends: 785 [2020-11-30 02:24:45,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:24:45,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-11-30 02:24:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2020-11-30 02:24:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-30 02:24:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2750 transitions. [2020-11-30 02:24:45,731 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2750 transitions. Word has length 10 [2020-11-30 02:24:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:45,731 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2750 transitions. [2020-11-30 02:24:45,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:24:45,731 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2750 transitions. [2020-11-30 02:24:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:24:45,732 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:45,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:45,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:24:45,733 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:45,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:45,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1619146835, now seen corresponding path program 1 times [2020-11-30 02:24:45,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:45,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039397408] [2020-11-30 02:24:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:45,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039397408] [2020-11-30 02:24:45,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:45,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:24:45,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569504357] [2020-11-30 02:24:45,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:24:45,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:45,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:24:45,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:24:45,832 INFO L87 Difference]: Start difference. First operand 785 states and 2750 transitions. Second operand 6 states. [2020-11-30 02:24:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:46,062 INFO L93 Difference]: Finished difference Result 1086 states and 3783 transitions. [2020-11-30 02:24:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:24:46,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 02:24:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:46,073 INFO L225 Difference]: With dead ends: 1086 [2020-11-30 02:24:46,073 INFO L226 Difference]: Without dead ends: 1086 [2020-11-30 02:24:46,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:24:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-11-30 02:24:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 785. [2020-11-30 02:24:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-30 02:24:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2750 transitions. [2020-11-30 02:24:46,114 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2750 transitions. Word has length 11 [2020-11-30 02:24:46,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:46,114 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2750 transitions. [2020-11-30 02:24:46,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:24:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2750 transitions. [2020-11-30 02:24:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:24:46,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:46,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:46,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:24:46,116 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:46,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:46,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1363243349, now seen corresponding path program 2 times [2020-11-30 02:24:46,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:46,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170403400] [2020-11-30 02:24:46,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:46,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170403400] [2020-11-30 02:24:46,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:46,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:24:46,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114964021] [2020-11-30 02:24:46,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:24:46,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:46,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:24:46,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:24:46,243 INFO L87 Difference]: Start difference. First operand 785 states and 2750 transitions. Second operand 6 states. [2020-11-30 02:24:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:46,459 INFO L93 Difference]: Finished difference Result 1371 states and 4791 transitions. [2020-11-30 02:24:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:24:46,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 02:24:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:46,477 INFO L225 Difference]: With dead ends: 1371 [2020-11-30 02:24:46,478 INFO L226 Difference]: Without dead ends: 1371 [2020-11-30 02:24:46,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:24:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-11-30 02:24:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 770. [2020-11-30 02:24:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-11-30 02:24:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2726 transitions. [2020-11-30 02:24:46,520 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2726 transitions. Word has length 11 [2020-11-30 02:24:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:46,521 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 2726 transitions. [2020-11-30 02:24:46,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:24:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2726 transitions. [2020-11-30 02:24:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 02:24:46,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:46,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:46,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:24:46,533 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:46,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1709084529, now seen corresponding path program 1 times [2020-11-30 02:24:46,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:46,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661431824] [2020-11-30 02:24:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:46,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661431824] [2020-11-30 02:24:46,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:46,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:24:46,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331154280] [2020-11-30 02:24:46,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:24:46,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:46,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:24:46,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:24:46,652 INFO L87 Difference]: Start difference. First operand 770 states and 2726 transitions. Second operand 5 states. [2020-11-30 02:24:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:46,796 INFO L93 Difference]: Finished difference Result 1018 states and 3463 transitions. [2020-11-30 02:24:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:24:46,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-30 02:24:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:46,805 INFO L225 Difference]: With dead ends: 1018 [2020-11-30 02:24:46,805 INFO L226 Difference]: Without dead ends: 769 [2020-11-30 02:24:46,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:24:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-11-30 02:24:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2020-11-30 02:24:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-11-30 02:24:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2724 transitions. [2020-11-30 02:24:46,845 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2724 transitions. Word has length 24 [2020-11-30 02:24:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:46,845 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 2724 transitions. [2020-11-30 02:24:46,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:24:46,846 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2724 transitions. [2020-11-30 02:24:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 02:24:46,848 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:46,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:46,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:24:46,849 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:46,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2020757561, now seen corresponding path program 2 times [2020-11-30 02:24:46,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:46,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7098833] [2020-11-30 02:24:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:46,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7098833] [2020-11-30 02:24:46,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:46,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:24:46,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214623291] [2020-11-30 02:24:46,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:24:46,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:46,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:24:46,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:24:46,917 INFO L87 Difference]: Start difference. First operand 769 states and 2724 transitions. Second operand 4 states. [2020-11-30 02:24:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:47,020 INFO L93 Difference]: Finished difference Result 1017 states and 3380 transitions. [2020-11-30 02:24:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:24:47,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-30 02:24:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:47,027 INFO L225 Difference]: With dead ends: 1017 [2020-11-30 02:24:47,027 INFO L226 Difference]: Without dead ends: 689 [2020-11-30 02:24:47,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:24:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-11-30 02:24:47,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 541. [2020-11-30 02:24:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-11-30 02:24:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1774 transitions. [2020-11-30 02:24:47,053 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1774 transitions. Word has length 24 [2020-11-30 02:24:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:47,054 INFO L481 AbstractCegarLoop]: Abstraction has 541 states and 1774 transitions. [2020-11-30 02:24:47,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:24:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1774 transitions. [2020-11-30 02:24:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 02:24:47,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:47,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:47,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:24:47,057 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:47,058 INFO L82 PathProgramCache]: Analyzing trace with hash 529385078, now seen corresponding path program 1 times [2020-11-30 02:24:47,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:47,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953188380] [2020-11-30 02:24:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:47,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953188380] [2020-11-30 02:24:47,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:47,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:24:47,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763114545] [2020-11-30 02:24:47,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:24:47,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:47,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:24:47,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:24:47,153 INFO L87 Difference]: Start difference. First operand 541 states and 1774 transitions. Second operand 4 states. [2020-11-30 02:24:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:47,230 INFO L93 Difference]: Finished difference Result 563 states and 1795 transitions. [2020-11-30 02:24:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:24:47,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-30 02:24:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:47,235 INFO L225 Difference]: With dead ends: 563 [2020-11-30 02:24:47,236 INFO L226 Difference]: Without dead ends: 485 [2020-11-30 02:24:47,236 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 [2020-11-30 02:24:47,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-11-30 02:24:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2020-11-30 02:24:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-11-30 02:24:47,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1540 transitions. [2020-11-30 02:24:47,256 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1540 transitions. Word has length 26 [2020-11-30 02:24:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:47,256 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 1540 transitions. [2020-11-30 02:24:47,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:24:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1540 transitions. [2020-11-30 02:24:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 02:24:47,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:47,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:47,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:24:47,259 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:47,260 INFO L82 PathProgramCache]: Analyzing trace with hash -771274933, now seen corresponding path program 1 times [2020-11-30 02:24:47,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:47,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619670850] [2020-11-30 02:24:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:47,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619670850] [2020-11-30 02:24:47,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:47,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:24:47,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747703287] [2020-11-30 02:24:47,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:24:47,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:47,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:24:47,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:24:47,379 INFO L87 Difference]: Start difference. First operand 485 states and 1540 transitions. Second operand 6 states. [2020-11-30 02:24:47,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:47,493 INFO L93 Difference]: Finished difference Result 648 states and 1981 transitions. [2020-11-30 02:24:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:24:47,494 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-30 02:24:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:47,498 INFO L225 Difference]: With dead ends: 648 [2020-11-30 02:24:47,498 INFO L226 Difference]: Without dead ends: 478 [2020-11-30 02:24:47,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:24:47,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-11-30 02:24:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2020-11-30 02:24:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-11-30 02:24:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1524 transitions. [2020-11-30 02:24:47,517 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1524 transitions. Word has length 28 [2020-11-30 02:24:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:47,518 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 1524 transitions. [2020-11-30 02:24:47,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:24:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1524 transitions. [2020-11-30 02:24:47,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 02:24:47,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:47,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:47,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:24:47,520 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash 942718069, now seen corresponding path program 2 times [2020-11-30 02:24:47,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:47,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093556294] [2020-11-30 02:24:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:47,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093556294] [2020-11-30 02:24:47,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:47,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:24:47,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336621610] [2020-11-30 02:24:47,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:24:47,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:47,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:24:47,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:24:47,665 INFO L87 Difference]: Start difference. First operand 478 states and 1524 transitions. Second operand 7 states. [2020-11-30 02:24:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:47,838 INFO L93 Difference]: Finished difference Result 638 states and 1960 transitions. [2020-11-30 02:24:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:24:47,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-11-30 02:24:47,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:47,843 INFO L225 Difference]: With dead ends: 638 [2020-11-30 02:24:47,843 INFO L226 Difference]: Without dead ends: 475 [2020-11-30 02:24:47,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:24:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-11-30 02:24:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2020-11-30 02:24:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-11-30 02:24:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1516 transitions. [2020-11-30 02:24:47,875 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1516 transitions. Word has length 28 [2020-11-30 02:24:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:47,875 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 1516 transitions. [2020-11-30 02:24:47,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:24:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1516 transitions. [2020-11-30 02:24:47,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 02:24:47,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:47,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:47,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:24:47,880 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:47,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:47,881 INFO L82 PathProgramCache]: Analyzing trace with hash -785554330, now seen corresponding path program 1 times [2020-11-30 02:24:47,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:47,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608114291] [2020-11-30 02:24:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:48,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608114291] [2020-11-30 02:24:48,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:48,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 02:24:48,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388279248] [2020-11-30 02:24:48,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:24:48,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:48,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:24:48,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:24:48,080 INFO L87 Difference]: Start difference. First operand 475 states and 1516 transitions. Second operand 9 states. [2020-11-30 02:24:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:48,343 INFO L93 Difference]: Finished difference Result 616 states and 1899 transitions. [2020-11-30 02:24:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:24:48,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-11-30 02:24:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:48,348 INFO L225 Difference]: With dead ends: 616 [2020-11-30 02:24:48,348 INFO L226 Difference]: Without dead ends: 457 [2020-11-30 02:24:48,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:24:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-11-30 02:24:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2020-11-30 02:24:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-11-30 02:24:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1446 transitions. [2020-11-30 02:24:48,365 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1446 transitions. Word has length 28 [2020-11-30 02:24:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:48,366 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 1446 transitions. [2020-11-30 02:24:48,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:24:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1446 transitions. [2020-11-30 02:24:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 02:24:48,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:48,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:48,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 02:24:48,368 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:48,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:48,368 INFO L82 PathProgramCache]: Analyzing trace with hash -403766554, now seen corresponding path program 2 times [2020-11-30 02:24:48,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:48,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462244092] [2020-11-30 02:24:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:48,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462244092] [2020-11-30 02:24:48,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:48,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 02:24:48,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584208735] [2020-11-30 02:24:48,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:24:48,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:48,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:24:48,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:24:48,588 INFO L87 Difference]: Start difference. First operand 457 states and 1446 transitions. Second operand 10 states. [2020-11-30 02:24:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:48,895 INFO L93 Difference]: Finished difference Result 705 states and 2218 transitions. [2020-11-30 02:24:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:24:48,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-11-30 02:24:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:48,901 INFO L225 Difference]: With dead ends: 705 [2020-11-30 02:24:48,901 INFO L226 Difference]: Without dead ends: 577 [2020-11-30 02:24:48,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-30 02:24:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-11-30 02:24:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 449. [2020-11-30 02:24:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-11-30 02:24:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1410 transitions. [2020-11-30 02:24:48,922 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1410 transitions. Word has length 28 [2020-11-30 02:24:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:48,922 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 1410 transitions. [2020-11-30 02:24:48,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:24:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1410 transitions. [2020-11-30 02:24:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 02:24:48,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:48,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:48,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 02:24:48,926 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:48,926 INFO L82 PathProgramCache]: Analyzing trace with hash 994711798, now seen corresponding path program 3 times [2020-11-30 02:24:48,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:48,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236205661] [2020-11-30 02:24:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:49,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236205661] [2020-11-30 02:24:49,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:49,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 02:24:49,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610235117] [2020-11-30 02:24:49,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 02:24:49,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:49,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 02:24:49,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:24:49,302 INFO L87 Difference]: Start difference. First operand 449 states and 1410 transitions. Second operand 13 states. [2020-11-30 02:24:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:49,766 INFO L93 Difference]: Finished difference Result 481 states and 1418 transitions. [2020-11-30 02:24:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:24:49,767 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-11-30 02:24:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:49,769 INFO L225 Difference]: With dead ends: 481 [2020-11-30 02:24:49,769 INFO L226 Difference]: Without dead ends: 257 [2020-11-30 02:24:49,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-30 02:24:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-30 02:24:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2020-11-30 02:24:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-11-30 02:24:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 666 transitions. [2020-11-30 02:24:49,801 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 666 transitions. Word has length 28 [2020-11-30 02:24:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:49,801 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 666 transitions. [2020-11-30 02:24:49,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 02:24:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 666 transitions. [2020-11-30 02:24:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:24:49,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:49,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:49,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 02:24:49,803 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:49,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:49,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1537187255, now seen corresponding path program 1 times [2020-11-30 02:24:49,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:49,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569676899] [2020-11-30 02:24:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:50,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569676899] [2020-11-30 02:24:50,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:50,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-30 02:24:50,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388908526] [2020-11-30 02:24:50,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:24:50,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:50,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:24:50,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:24:50,260 INFO L87 Difference]: Start difference. First operand 257 states and 666 transitions. Second operand 12 states. [2020-11-30 02:24:50,587 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-30 02:24:50,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:50,940 INFO L93 Difference]: Finished difference Result 541 states and 1406 transitions. [2020-11-30 02:24:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:24:50,941 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-30 02:24:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:50,944 INFO L225 Difference]: With dead ends: 541 [2020-11-30 02:24:50,944 INFO L226 Difference]: Without dead ends: 411 [2020-11-30 02:24:50,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-11-30 02:24:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-11-30 02:24:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 267. [2020-11-30 02:24:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-11-30 02:24:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 681 transitions. [2020-11-30 02:24:50,955 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 681 transitions. Word has length 30 [2020-11-30 02:24:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:50,955 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 681 transitions. [2020-11-30 02:24:50,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:24:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 681 transitions. [2020-11-30 02:24:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:24:50,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:50,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:50,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 02:24:50,957 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:50,957 INFO L82 PathProgramCache]: Analyzing trace with hash -138708903, now seen corresponding path program 2 times [2020-11-30 02:24:50,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:50,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879141038] [2020-11-30 02:24:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:51,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879141038] [2020-11-30 02:24:51,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:51,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-30 02:24:51,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611932364] [2020-11-30 02:24:51,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 02:24:51,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:51,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 02:24:51,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-11-30 02:24:51,470 INFO L87 Difference]: Start difference. First operand 267 states and 681 transitions. Second operand 14 states. [2020-11-30 02:24:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:52,216 INFO L93 Difference]: Finished difference Result 465 states and 1196 transitions. [2020-11-30 02:24:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:24:52,216 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-11-30 02:24:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:52,219 INFO L225 Difference]: With dead ends: 465 [2020-11-30 02:24:52,219 INFO L226 Difference]: Without dead ends: 417 [2020-11-30 02:24:52,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-11-30 02:24:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-11-30 02:24:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 299. [2020-11-30 02:24:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-11-30 02:24:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 777 transitions. [2020-11-30 02:24:52,231 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 777 transitions. Word has length 30 [2020-11-30 02:24:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:52,231 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 777 transitions. [2020-11-30 02:24:52,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 02:24:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 777 transitions. [2020-11-30 02:24:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:24:52,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:52,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:52,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 02:24:52,233 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1633519411, now seen corresponding path program 3 times [2020-11-30 02:24:52,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:52,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593626348] [2020-11-30 02:24:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:52,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593626348] [2020-11-30 02:24:52,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:52,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-30 02:24:52,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561530167] [2020-11-30 02:24:52,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:24:52,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:52,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:24:52,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:24:52,532 INFO L87 Difference]: Start difference. First operand 299 states and 777 transitions. Second operand 12 states. [2020-11-30 02:24:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:53,110 INFO L93 Difference]: Finished difference Result 355 states and 897 transitions. [2020-11-30 02:24:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:24:53,110 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-30 02:24:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:53,112 INFO L225 Difference]: With dead ends: 355 [2020-11-30 02:24:53,112 INFO L226 Difference]: Without dead ends: 251 [2020-11-30 02:24:53,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-11-30 02:24:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-11-30 02:24:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2020-11-30 02:24:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-11-30 02:24:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 637 transitions. [2020-11-30 02:24:53,121 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 637 transitions. Word has length 30 [2020-11-30 02:24:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:53,121 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 637 transitions. [2020-11-30 02:24:53,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:24:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 637 transitions. [2020-11-30 02:24:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:24:53,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:53,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:53,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 02:24:53,123 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:53,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:53,123 INFO L82 PathProgramCache]: Analyzing trace with hash 540160227, now seen corresponding path program 4 times [2020-11-30 02:24:53,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:53,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910419907] [2020-11-30 02:24:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:53,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910419907] [2020-11-30 02:24:53,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:53,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-30 02:24:53,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145040522] [2020-11-30 02:24:53,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:24:53,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:53,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:24:53,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:24:53,509 INFO L87 Difference]: Start difference. First operand 251 states and 637 transitions. Second operand 12 states. [2020-11-30 02:24:53,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:53,741 INFO L93 Difference]: Finished difference Result 307 states and 757 transitions. [2020-11-30 02:24:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:24:53,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-30 02:24:53,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:53,743 INFO L225 Difference]: With dead ends: 307 [2020-11-30 02:24:53,744 INFO L226 Difference]: Without dead ends: 233 [2020-11-30 02:24:53,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:24:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-11-30 02:24:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 227. [2020-11-30 02:24:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-30 02:24:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 576 transitions. [2020-11-30 02:24:53,751 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 576 transitions. Word has length 30 [2020-11-30 02:24:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:53,751 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 576 transitions. [2020-11-30 02:24:53,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:24:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 576 transitions. [2020-11-30 02:24:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:24:53,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:53,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:53,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 02:24:53,755 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:53,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1938638579, now seen corresponding path program 5 times [2020-11-30 02:24:53,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:53,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319968938] [2020-11-30 02:24:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:54,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319968938] [2020-11-30 02:24:54,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:54,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 02:24:54,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293644926] [2020-11-30 02:24:54,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 02:24:54,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:54,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 02:24:54,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:24:54,174 INFO L87 Difference]: Start difference. First operand 227 states and 576 transitions. Second operand 13 states. [2020-11-30 02:24:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:54,777 INFO L93 Difference]: Finished difference Result 354 states and 880 transitions. [2020-11-30 02:24:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:24:54,777 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-11-30 02:24:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:54,780 INFO L225 Difference]: With dead ends: 354 [2020-11-30 02:24:54,780 INFO L226 Difference]: Without dead ends: 306 [2020-11-30 02:24:54,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-11-30 02:24:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-11-30 02:24:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 241. [2020-11-30 02:24:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-30 02:24:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 603 transitions. [2020-11-30 02:24:54,790 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 603 transitions. Word has length 30 [2020-11-30 02:24:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:54,790 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 603 transitions. [2020-11-30 02:24:54,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 02:24:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 603 transitions. [2020-11-30 02:24:54,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 02:24:54,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:54,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:54,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-30 02:24:54,792 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread0Err0INUSE_VIOLATION, thread0Err10INUSE_VIOLATION, thread0Err4INUSE_VIOLATION, thread0Err9INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5INUSE_VIOLATION, thread0Thread1of1ForFork4Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err6INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err8INUSE_VIOLATION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION]=== [2020-11-30 02:24:54,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:54,792 INFO L82 PathProgramCache]: Analyzing trace with hash -584100403, now seen corresponding path program 6 times [2020-11-30 02:24:54,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:24:54,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999050644] [2020-11-30 02:24:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:24:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:24:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:55,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999050644] [2020-11-30 02:24:55,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:24:55,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-30 02:24:55,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058069613] [2020-11-30 02:24:55,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:24:55,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:24:55,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:24:55,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:24:55,193 INFO L87 Difference]: Start difference. First operand 241 states and 603 transitions. Second operand 12 states. [2020-11-30 02:24:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:55,372 INFO L93 Difference]: Finished difference Result 179 states and 424 transitions. [2020-11-30 02:24:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:24:55,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-30 02:24:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:55,373 INFO L225 Difference]: With dead ends: 179 [2020-11-30 02:24:55,373 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:24:55,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:24:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:24:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:24:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:24:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:24:55,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-11-30 02:24:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:55,374 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:24:55,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:24:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:24:55,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:24:55,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 02:24:55,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:24:55 BasicIcfg [2020-11-30 02:24:55,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:24:55,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:24:55,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:24:55,378 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:24:55,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:24:40" (3/4) ... [2020-11-30 02:24:55,382 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:24:55,389 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread0 [2020-11-30 02:24:55,389 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-11-30 02:24:55,389 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2020-11-30 02:24:55,389 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2020-11-30 02:24:55,394 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 02:24:55,394 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:24:55,394 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:24:55,394 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:24:55,428 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4df187d2-4de2-4565-a23a-c41ba2384db6/bin/utaipan/witness.graphml [2020-11-30 02:24:55,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:24:55,430 INFO L168 Benchmark]: Toolchain (without parser) took 17016.03 ms. Allocated memory was 98.6 MB in the beginning and 211.8 MB in the end (delta: 113.2 MB). Free memory was 68.3 MB in the beginning and 146.9 MB in the end (delta: -78.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:55,430 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 54.9 MB in the beginning and 54.8 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:24:55,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1061.21 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 68.3 MB in the beginning and 68.6 MB in the end (delta: -316.4 kB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:55,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.61 ms. Allocated memory is still 121.6 MB. Free memory was 68.6 MB in the beginning and 66.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:55,432 INFO L168 Benchmark]: Boogie Preprocessor took 31.39 ms. Allocated memory is still 121.6 MB. Free memory was 66.5 MB in the beginning and 64.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:55,432 INFO L168 Benchmark]: RCFGBuilder took 751.89 ms. Allocated memory is still 121.6 MB. Free memory was 64.4 MB in the beginning and 85.4 MB in the end (delta: -21.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:55,432 INFO L168 Benchmark]: TraceAbstraction took 15037.35 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 85.4 MB in the beginning and 150.1 MB in the end (delta: -64.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:55,433 INFO L168 Benchmark]: Witness Printer took 50.67 ms. Allocated memory is still 211.8 MB. Free memory was 150.1 MB in the beginning and 146.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:55,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 54.9 MB in the beginning and 54.8 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1061.21 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 68.3 MB in the beginning and 68.6 MB in the end (delta: -316.4 kB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.61 ms. Allocated memory is still 121.6 MB. Free memory was 68.6 MB in the beginning and 66.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.39 ms. Allocated memory is still 121.6 MB. Free memory was 66.5 MB in the beginning and 64.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 751.89 ms. Allocated memory is still 121.6 MB. Free memory was 64.4 MB in the beginning and 85.4 MB in the end (delta: -21.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15037.35 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 85.4 MB in the beginning and 150.1 MB in the end (delta: -64.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. * Witness Printer took 50.67 ms. Allocated memory is still 211.8 MB. Free memory was 150.1 MB in the beginning and 146.9 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 1135 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 158 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 186 PlacesBefore, 103 PlacesAfterwards, 259 TransitionsBefore, 176 TransitionsAfterwards, 1648 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 94 TotalNumberOfCompositions, 22144 MoverChecksTotal - PositiveResult [Line: 20]: 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 5 procedures, 106 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 692 SDtfs, 937 SDslu, 2052 SDs, 0 SdLazy, 2165 SolverSat, 302 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=998occurred 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: 0.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 1808 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 436 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 146742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...