./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_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/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 [2020-11-22 12:57:12,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:12,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:12,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:12,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:12,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:12,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:12,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:12,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:12,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:12,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:12,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:12,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:12,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:12,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:12,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:12,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:12,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:12,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:12,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:12,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:12,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:12,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:12,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:12,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:12,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:12,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:12,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:12,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:12,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:12,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:12,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:12,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:12,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:12,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:12,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:12,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:12,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:12,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:12,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:12,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:12,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:12,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:12,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:12,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:12,807 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:12,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:12,808 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:12,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:12,808 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:12,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:12,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:12,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:12,809 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:12,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:12,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:12,810 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:12,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:12,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:12,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:12,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:12,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:12,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:12,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:12,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:12,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:12,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:12,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:12,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:12,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:12,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:12,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:12,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:12,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:12,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:12,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:12,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:12,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:12,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:12,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:12,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:12,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:12,817 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_3029c307-90cd-4e3d-9223-80d2e3a6fca5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4813f1ecdee15758ab36c7ea84ae454e7bf08642 [2020-11-22 12:57:13,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:13,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:13,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:13,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:13,106 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:13,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-11-22 12:57:13,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/data/42442bb8c/670243f19ca746fdb54b2b14b2c31ae7/FLAG3370d3bb3 [2020-11-22 12:57:13,804 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:13,805 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-11-22 12:57:13,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/data/42442bb8c/670243f19ca746fdb54b2b14b2c31ae7/FLAG3370d3bb3 [2020-11-22 12:57:14,043 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/data/42442bb8c/670243f19ca746fdb54b2b14b2c31ae7 [2020-11-22 12:57:14,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:14,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:14,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:14,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:14,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:14,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:14,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d765a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14, skipping insertion in model container [2020-11-22 12:57:14,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:14,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:14,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:14,386 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-22 12:57:14,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:14,669 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:14,700 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-22 12:57:14,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:14,974 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:14,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14 WrapperNode [2020-11-22 12:57:14,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:14,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:14,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:14,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:14,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:15,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:15,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:15,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:15,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... [2020-11-22 12:57:15,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:15,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:15,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:15,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:15,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/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 [2020-11-22 12:57:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:57:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:57:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:57:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:57:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2020-11-22 12:57:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2020-11-22 12:57:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-11-22 12:57:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-11-22 12:57:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-11-22 12:57:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-11-22 12:57:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-11-22 12:57:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-11-22 12:57:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:57:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 12:57:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:15,162 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:57:15,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:15,772 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-22 12:57:15,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:15 BoogieIcfgContainer [2020-11-22 12:57:15,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:15,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:15,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:15,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:15,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:14" (1/3) ... [2020-11-22 12:57:15,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31976a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:15, skipping insertion in model container [2020-11-22 12:57:15,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:14" (2/3) ... [2020-11-22 12:57:15,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31976a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:15, skipping insertion in model container [2020-11-22 12:57:15,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:15" (3/3) ... [2020-11-22 12:57:15,784 INFO L111 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2020-11-22 12:57:15,800 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:57:15,801 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:15,807 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:15,807 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:57:15,853 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,853 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,853 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,853 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,854 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,854 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,854 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,854 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,854 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,855 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,855 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,855 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,855 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,855 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,856 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,856 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,856 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,856 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,857 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,857 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,857 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,858 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,858 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,858 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,858 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,858 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,859 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,859 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,859 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,859 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,859 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,860 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,860 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,860 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,860 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,860 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,861 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,861 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,861 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,861 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,861 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,862 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,862 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,862 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,862 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,862 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,862 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,863 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,863 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,863 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,863 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,863 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,864 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,864 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,864 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,864 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,864 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,865 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,865 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,865 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,865 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,865 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,865 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,866 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,866 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,866 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,883 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,883 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,883 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,883 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,884 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,884 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,884 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,884 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,885 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,885 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,885 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,886 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,886 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,886 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,886 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,886 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,887 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,887 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,887 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,887 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,887 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,888 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,888 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,888 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,888 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,888 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,889 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,889 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,889 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,891 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,891 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,891 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,892 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,944 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,944 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,944 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,944 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,975 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,976 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:15,976 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,007 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,007 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,008 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,008 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,008 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,008 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,043 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,044 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,044 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,044 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,044 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,044 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,044 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,045 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,045 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,045 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,045 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,045 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,045 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,045 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,046 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,046 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,046 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,046 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,046 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,046 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,046 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,047 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,047 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,047 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,055 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,055 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,056 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,056 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,060 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,060 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,060 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,060 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,061 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,061 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,066 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,067 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,067 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,067 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,073 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,073 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,073 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,073 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,079 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,079 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,081 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,081 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:57:16,250 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2020-11-22 12:57:16,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-11-22 12:57:16,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:16,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:16,280 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:16,280 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:16,280 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:16,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:16,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:16,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:16,298 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:57:16,300 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 259 transitions, 898 flow [2020-11-22 12:57:16,303 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 259 transitions, 898 flow [2020-11-22 12:57:16,305 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 186 places, 259 transitions, 898 flow [2020-11-22 12:57:16,374 INFO L129 PetriNetUnfolder]: 10/124 cut-off events. [2020-11-22 12:57:16,374 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-22 12:57:16,380 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. [2020-11-22 12:57:16,384 INFO L116 LiptonReduction]: Number of co-enabled transitions 1648 [2020-11-22 12:57:18,295 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-11-22 12:57:18,409 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-22 12:57:19,080 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-11-22 12:57:19,405 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-22 12:57:19,543 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-22 12:57:19,847 INFO L131 LiptonReduction]: Checked pairs total: 22144 [2020-11-22 12:57:19,847 INFO L133 LiptonReduction]: Total number of compositions: 94 [2020-11-22 12:57:19,856 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 176 transitions, 732 flow [2020-11-22 12:57:20,021 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 998 states. [2020-11-22 12:57:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states. [2020-11-22 12:57:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:57:20,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:20,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:20,031 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]=== [2020-11-22 12:57:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash -299289812, now seen corresponding path program 1 times [2020-11-22 12:57:20,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:20,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382236337] [2020-11-22 12:57:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:20,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382236337] [2020-11-22 12:57:20,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:20,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:20,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733767653] [2020-11-22 12:57:20,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:20,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:20,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:20,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:20,447 INFO L87 Difference]: Start difference. First operand 998 states. Second operand 5 states. [2020-11-22 12:57:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:20,677 INFO L93 Difference]: Finished difference Result 1381 states and 4916 transitions. [2020-11-22 12:57:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:20,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-22 12:57:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:20,721 INFO L225 Difference]: With dead ends: 1381 [2020-11-22 12:57:20,722 INFO L226 Difference]: Without dead ends: 1082 [2020-11-22 12:57:20,723 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 [2020-11-22 12:57:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-11-22 12:57:20,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 785. [2020-11-22 12:57:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-22 12:57:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2806 transitions. [2020-11-22 12:57:20,877 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2806 transitions. Word has length 10 [2020-11-22 12:57:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:20,878 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2806 transitions. [2020-11-22 12:57:20,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2806 transitions. [2020-11-22 12:57:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:57:20,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:20,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:20,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:20,879 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]=== [2020-11-22 12:57:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:20,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1610347620, now seen corresponding path program 2 times [2020-11-22 12:57:20,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:20,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444614840] [2020-11-22 12:57:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:20,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444614840] [2020-11-22 12:57:20,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:20,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:20,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208034074] [2020-11-22 12:57:20,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:20,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:20,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:20,988 INFO L87 Difference]: Start difference. First operand 785 states and 2806 transitions. Second operand 3 states. [2020-11-22 12:57:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:21,003 INFO L93 Difference]: Finished difference Result 841 states and 2942 transitions. [2020-11-22 12:57:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:21,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-22 12:57:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:21,017 INFO L225 Difference]: With dead ends: 841 [2020-11-22 12:57:21,018 INFO L226 Difference]: Without dead ends: 785 [2020-11-22 12:57:21,023 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 [2020-11-22 12:57:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-11-22 12:57:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2020-11-22 12:57:21,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-22 12:57:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2750 transitions. [2020-11-22 12:57:21,075 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2750 transitions. Word has length 10 [2020-11-22 12:57:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:21,075 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2750 transitions. [2020-11-22 12:57:21,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2750 transitions. [2020-11-22 12:57:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:57:21,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:21,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:21,077 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]=== [2020-11-22 12:57:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:21,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1619146835, now seen corresponding path program 1 times [2020-11-22 12:57:21,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:21,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264119634] [2020-11-22 12:57:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:21,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264119634] [2020-11-22 12:57:21,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:57:21,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090827669] [2020-11-22 12:57:21,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:21,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:21,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:21,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:21,272 INFO L87 Difference]: Start difference. First operand 785 states and 2750 transitions. Second operand 6 states. [2020-11-22 12:57:21,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:21,511 INFO L93 Difference]: Finished difference Result 1086 states and 3783 transitions. [2020-11-22 12:57:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:21,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-22 12:57:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:21,523 INFO L225 Difference]: With dead ends: 1086 [2020-11-22 12:57:21,523 INFO L226 Difference]: Without dead ends: 1086 [2020-11-22 12:57:21,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:57:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-11-22 12:57:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 785. [2020-11-22 12:57:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-22 12:57:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2750 transitions. [2020-11-22 12:57:21,569 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2750 transitions. Word has length 11 [2020-11-22 12:57:21,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:21,569 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2750 transitions. [2020-11-22 12:57:21,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2750 transitions. [2020-11-22 12:57:21,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:57:21,571 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:21,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:57:21,571 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]=== [2020-11-22 12:57:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:21,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1363243349, now seen corresponding path program 2 times [2020-11-22 12:57:21,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:21,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650871804] [2020-11-22 12:57:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:21,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650871804] [2020-11-22 12:57:21,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:21,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:57:21,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645928291] [2020-11-22 12:57:21,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:21,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:21,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:21,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:21,701 INFO L87 Difference]: Start difference. First operand 785 states and 2750 transitions. Second operand 6 states. [2020-11-22 12:57:21,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:21,912 INFO L93 Difference]: Finished difference Result 1371 states and 4791 transitions. [2020-11-22 12:57:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:57:21,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-22 12:57:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:21,931 INFO L225 Difference]: With dead ends: 1371 [2020-11-22 12:57:21,931 INFO L226 Difference]: Without dead ends: 1371 [2020-11-22 12:57:21,932 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 [2020-11-22 12:57:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-11-22 12:57:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 770. [2020-11-22 12:57:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-11-22 12:57:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2726 transitions. [2020-11-22 12:57:21,975 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2726 transitions. Word has length 11 [2020-11-22 12:57:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:21,977 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 2726 transitions. [2020-11-22 12:57:21,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2726 transitions. [2020-11-22 12:57:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:57:21,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:21,988 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] [2020-11-22 12:57:21,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:57:21,988 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]=== [2020-11-22 12:57:21,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:21,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1709084529, now seen corresponding path program 1 times [2020-11-22 12:57:21,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:21,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140773552] [2020-11-22 12:57:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140773552] [2020-11-22 12:57:22,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:22,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157373244] [2020-11-22 12:57:22,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:22,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:22,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:22,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:22,100 INFO L87 Difference]: Start difference. First operand 770 states and 2726 transitions. Second operand 5 states. [2020-11-22 12:57:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,222 INFO L93 Difference]: Finished difference Result 1018 states and 3463 transitions. [2020-11-22 12:57:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:22,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-22 12:57:22,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,230 INFO L225 Difference]: With dead ends: 1018 [2020-11-22 12:57:22,231 INFO L226 Difference]: Without dead ends: 769 [2020-11-22 12:57:22,231 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 [2020-11-22 12:57:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-11-22 12:57:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2020-11-22 12:57:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-11-22 12:57:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2724 transitions. [2020-11-22 12:57:22,264 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2724 transitions. Word has length 24 [2020-11-22 12:57:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,264 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 2724 transitions. [2020-11-22 12:57:22,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2724 transitions. [2020-11-22 12:57:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:57:22,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,267 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] [2020-11-22 12:57:22,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:57:22,268 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]=== [2020-11-22 12:57:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2020757561, now seen corresponding path program 2 times [2020-11-22 12:57:22,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:22,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252763002] [2020-11-22 12:57:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252763002] [2020-11-22 12:57:22,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:22,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002320264] [2020-11-22 12:57:22,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:22,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:22,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:22,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:22,351 INFO L87 Difference]: Start difference. First operand 769 states and 2724 transitions. Second operand 4 states. [2020-11-22 12:57:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,461 INFO L93 Difference]: Finished difference Result 1017 states and 3380 transitions. [2020-11-22 12:57:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:22,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-22 12:57:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,468 INFO L225 Difference]: With dead ends: 1017 [2020-11-22 12:57:22,468 INFO L226 Difference]: Without dead ends: 689 [2020-11-22 12:57:22,468 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 [2020-11-22 12:57:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-11-22 12:57:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 541. [2020-11-22 12:57:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-11-22 12:57:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1774 transitions. [2020-11-22 12:57:22,494 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1774 transitions. Word has length 24 [2020-11-22 12:57:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,496 INFO L481 AbstractCegarLoop]: Abstraction has 541 states and 1774 transitions. [2020-11-22 12:57:22,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:22,496 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1774 transitions. [2020-11-22 12:57:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-22 12:57:22,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,498 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] [2020-11-22 12:57:22,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:57:22,499 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]=== [2020-11-22 12:57:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash 529385078, now seen corresponding path program 1 times [2020-11-22 12:57:22,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:22,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322508381] [2020-11-22 12:57:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322508381] [2020-11-22 12:57:22,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:22,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823974366] [2020-11-22 12:57:22,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:22,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:22,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:22,695 INFO L87 Difference]: Start difference. First operand 541 states and 1774 transitions. Second operand 4 states. [2020-11-22 12:57:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:22,787 INFO L93 Difference]: Finished difference Result 563 states and 1795 transitions. [2020-11-22 12:57:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:22,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-22 12:57:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:22,792 INFO L225 Difference]: With dead ends: 563 [2020-11-22 12:57:22,793 INFO L226 Difference]: Without dead ends: 485 [2020-11-22 12:57:22,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-11-22 12:57:22,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2020-11-22 12:57:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-11-22 12:57:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1540 transitions. [2020-11-22 12:57:22,812 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1540 transitions. Word has length 26 [2020-11-22 12:57:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:22,813 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 1540 transitions. [2020-11-22 12:57:22,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1540 transitions. [2020-11-22 12:57:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-22 12:57:22,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:22,815 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] [2020-11-22 12:57:22,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:57:22,815 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]=== [2020-11-22 12:57:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash -771274933, now seen corresponding path program 1 times [2020-11-22 12:57:22,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:22,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146064755] [2020-11-22 12:57:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:22,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146064755] [2020-11-22 12:57:22,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:22,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:57:22,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643941179] [2020-11-22 12:57:22,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:22,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:22,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:22,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:22,916 INFO L87 Difference]: Start difference. First operand 485 states and 1540 transitions. Second operand 6 states. [2020-11-22 12:57:23,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,042 INFO L93 Difference]: Finished difference Result 648 states and 1981 transitions. [2020-11-22 12:57:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:23,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-22 12:57:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,047 INFO L225 Difference]: With dead ends: 648 [2020-11-22 12:57:23,047 INFO L226 Difference]: Without dead ends: 478 [2020-11-22 12:57:23,048 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 [2020-11-22 12:57:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-11-22 12:57:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2020-11-22 12:57:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-11-22 12:57:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1524 transitions. [2020-11-22 12:57:23,066 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1524 transitions. Word has length 28 [2020-11-22 12:57:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:23,067 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 1524 transitions. [2020-11-22 12:57:23,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1524 transitions. [2020-11-22 12:57:23,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-22 12:57:23,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:23,069 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] [2020-11-22 12:57:23,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:57:23,070 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]=== [2020-11-22 12:57:23,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,070 INFO L82 PathProgramCache]: Analyzing trace with hash 942718069, now seen corresponding path program 2 times [2020-11-22 12:57:23,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:23,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961353387] [2020-11-22 12:57:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:23,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961353387] [2020-11-22 12:57:23,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:23,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 12:57:23,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742444013] [2020-11-22 12:57:23,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:57:23,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:23,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:57:23,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:23,233 INFO L87 Difference]: Start difference. First operand 478 states and 1524 transitions. Second operand 7 states. [2020-11-22 12:57:23,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,410 INFO L93 Difference]: Finished difference Result 638 states and 1960 transitions. [2020-11-22 12:57:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:57:23,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-11-22 12:57:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,415 INFO L225 Difference]: With dead ends: 638 [2020-11-22 12:57:23,415 INFO L226 Difference]: Without dead ends: 475 [2020-11-22 12:57:23,416 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 [2020-11-22 12:57:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-11-22 12:57:23,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2020-11-22 12:57:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-11-22 12:57:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1516 transitions. [2020-11-22 12:57:23,433 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1516 transitions. Word has length 28 [2020-11-22 12:57:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:23,434 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 1516 transitions. [2020-11-22 12:57:23,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:57:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1516 transitions. [2020-11-22 12:57:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-22 12:57:23,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:23,438 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] [2020-11-22 12:57:23,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:57:23,438 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]=== [2020-11-22 12:57:23,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,439 INFO L82 PathProgramCache]: Analyzing trace with hash -785554330, now seen corresponding path program 1 times [2020-11-22 12:57:23,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:23,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492864663] [2020-11-22 12:57:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:23,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492864663] [2020-11-22 12:57:23,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:23,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-22 12:57:23,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600194152] [2020-11-22 12:57:23,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 12:57:23,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:23,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 12:57:23,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:23,657 INFO L87 Difference]: Start difference. First operand 475 states and 1516 transitions. Second operand 9 states. [2020-11-22 12:57:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:23,888 INFO L93 Difference]: Finished difference Result 616 states and 1899 transitions. [2020-11-22 12:57:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:57:23,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-11-22 12:57:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:23,891 INFO L225 Difference]: With dead ends: 616 [2020-11-22 12:57:23,892 INFO L226 Difference]: Without dead ends: 457 [2020-11-22 12:57:23,892 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 [2020-11-22 12:57:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-11-22 12:57:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2020-11-22 12:57:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-11-22 12:57:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1446 transitions. [2020-11-22 12:57:23,908 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1446 transitions. Word has length 28 [2020-11-22 12:57:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:23,908 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 1446 transitions. [2020-11-22 12:57:23,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 12:57:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1446 transitions. [2020-11-22 12:57:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-22 12:57:23,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:23,910 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] [2020-11-22 12:57:23,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:57:23,910 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]=== [2020-11-22 12:57:23,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:23,911 INFO L82 PathProgramCache]: Analyzing trace with hash -403766554, now seen corresponding path program 2 times [2020-11-22 12:57:23,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:23,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902952093] [2020-11-22 12:57:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:24,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902952093] [2020-11-22 12:57:24,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:24,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-22 12:57:24,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461351901] [2020-11-22 12:57:24,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:57:24,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:24,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:57:24,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:57:24,209 INFO L87 Difference]: Start difference. First operand 457 states and 1446 transitions. Second operand 10 states. [2020-11-22 12:57:24,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:24,486 INFO L93 Difference]: Finished difference Result 705 states and 2218 transitions. [2020-11-22 12:57:24,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:57:24,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-11-22 12:57:24,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:24,491 INFO L225 Difference]: With dead ends: 705 [2020-11-22 12:57:24,492 INFO L226 Difference]: Without dead ends: 577 [2020-11-22 12:57:24,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-22 12:57:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-11-22 12:57:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 449. [2020-11-22 12:57:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-11-22 12:57:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1410 transitions. [2020-11-22 12:57:24,510 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1410 transitions. Word has length 28 [2020-11-22 12:57:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:24,510 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 1410 transitions. [2020-11-22 12:57:24,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:57:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1410 transitions. [2020-11-22 12:57:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-22 12:57:24,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:24,512 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] [2020-11-22 12:57:24,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 12:57:24,513 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]=== [2020-11-22 12:57:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash 994711798, now seen corresponding path program 3 times [2020-11-22 12:57:24,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:24,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435847401] [2020-11-22 12:57:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:24,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435847401] [2020-11-22 12:57:24,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:24,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-22 12:57:24,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563285944] [2020-11-22 12:57:24,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 12:57:24,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:24,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 12:57:24,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:57:24,852 INFO L87 Difference]: Start difference. First operand 449 states and 1410 transitions. Second operand 13 states. [2020-11-22 12:57:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:25,265 INFO L93 Difference]: Finished difference Result 481 states and 1418 transitions. [2020-11-22 12:57:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:57:25,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-11-22 12:57:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:25,268 INFO L225 Difference]: With dead ends: 481 [2020-11-22 12:57:25,268 INFO L226 Difference]: Without dead ends: 257 [2020-11-22 12:57:25,268 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 [2020-11-22 12:57:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-22 12:57:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2020-11-22 12:57:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-11-22 12:57:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 666 transitions. [2020-11-22 12:57:25,276 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 666 transitions. Word has length 28 [2020-11-22 12:57:25,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:25,277 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 666 transitions. [2020-11-22 12:57:25,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 12:57:25,277 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 666 transitions. [2020-11-22 12:57:25,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:57:25,278 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:25,278 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] [2020-11-22 12:57:25,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 12:57:25,278 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]=== [2020-11-22 12:57:25,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:25,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1537187255, now seen corresponding path program 1 times [2020-11-22 12:57:25,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:25,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676442866] [2020-11-22 12:57:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:25,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676442866] [2020-11-22 12:57:25,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:25,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-22 12:57:25,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674259443] [2020-11-22 12:57:25,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:57:25,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:25,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:57:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:57:25,559 INFO L87 Difference]: Start difference. First operand 257 states and 666 transitions. Second operand 12 states. [2020-11-22 12:57:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:25,894 INFO L93 Difference]: Finished difference Result 556 states and 1432 transitions. [2020-11-22 12:57:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:57:25,895 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-22 12:57:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:25,911 INFO L225 Difference]: With dead ends: 556 [2020-11-22 12:57:25,911 INFO L226 Difference]: Without dead ends: 413 [2020-11-22 12:57:25,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-11-22 12:57:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-11-22 12:57:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 269. [2020-11-22 12:57:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-11-22 12:57:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 683 transitions. [2020-11-22 12:57:25,920 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 683 transitions. Word has length 30 [2020-11-22 12:57:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:25,921 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 683 transitions. [2020-11-22 12:57:25,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:57:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 683 transitions. [2020-11-22 12:57:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:57:25,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:25,922 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] [2020-11-22 12:57:25,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-22 12:57:25,922 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]=== [2020-11-22 12:57:25,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:25,923 INFO L82 PathProgramCache]: Analyzing trace with hash -138708903, now seen corresponding path program 2 times [2020-11-22 12:57:25,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:25,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772719118] [2020-11-22 12:57:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:26,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772719118] [2020-11-22 12:57:26,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:26,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-22 12:57:26,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038827423] [2020-11-22 12:57:26,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 12:57:26,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:26,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 12:57:26,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:57:26,279 INFO L87 Difference]: Start difference. First operand 269 states and 683 transitions. Second operand 13 states. [2020-11-22 12:57:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:26,732 INFO L93 Difference]: Finished difference Result 467 states and 1198 transitions. [2020-11-22 12:57:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:57:26,732 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-11-22 12:57:26,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:26,735 INFO L225 Difference]: With dead ends: 467 [2020-11-22 12:57:26,735 INFO L226 Difference]: Without dead ends: 419 [2020-11-22 12:57:26,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-11-22 12:57:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-11-22 12:57:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 301. [2020-11-22 12:57:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-11-22 12:57:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 779 transitions. [2020-11-22 12:57:26,747 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 779 transitions. Word has length 30 [2020-11-22 12:57:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:26,747 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 779 transitions. [2020-11-22 12:57:26,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 12:57:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 779 transitions. [2020-11-22 12:57:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:57:26,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:26,748 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] [2020-11-22 12:57:26,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-22 12:57:26,749 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]=== [2020-11-22 12:57:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:26,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1633519411, now seen corresponding path program 3 times [2020-11-22 12:57:26,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:26,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665991989] [2020-11-22 12:57:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:26,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665991989] [2020-11-22 12:57:26,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:26,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-22 12:57:26,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334328877] [2020-11-22 12:57:26,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:57:26,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:26,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:57:26,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:57:26,965 INFO L87 Difference]: Start difference. First operand 301 states and 779 transitions. Second operand 12 states. [2020-11-22 12:57:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:27,286 INFO L93 Difference]: Finished difference Result 357 states and 899 transitions. [2020-11-22 12:57:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:57:27,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-22 12:57:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:27,289 INFO L225 Difference]: With dead ends: 357 [2020-11-22 12:57:27,289 INFO L226 Difference]: Without dead ends: 253 [2020-11-22 12:57:27,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-11-22 12:57:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-11-22 12:57:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2020-11-22 12:57:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-11-22 12:57:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 639 transitions. [2020-11-22 12:57:27,297 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 639 transitions. Word has length 30 [2020-11-22 12:57:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:27,298 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 639 transitions. [2020-11-22 12:57:27,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:57:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 639 transitions. [2020-11-22 12:57:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:57:27,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:27,299 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] [2020-11-22 12:57:27,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-22 12:57:27,299 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]=== [2020-11-22 12:57:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:27,300 INFO L82 PathProgramCache]: Analyzing trace with hash 540160227, now seen corresponding path program 4 times [2020-11-22 12:57:27,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:27,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74810064] [2020-11-22 12:57:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:27,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74810064] [2020-11-22 12:57:27,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:27,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-22 12:57:27,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926874177] [2020-11-22 12:57:27,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:57:27,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:27,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:57:27,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:57:27,627 INFO L87 Difference]: Start difference. First operand 253 states and 639 transitions. Second operand 12 states. [2020-11-22 12:57:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:27,802 INFO L93 Difference]: Finished difference Result 309 states and 759 transitions. [2020-11-22 12:57:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:57:27,803 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-22 12:57:27,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:27,804 INFO L225 Difference]: With dead ends: 309 [2020-11-22 12:57:27,805 INFO L226 Difference]: Without dead ends: 236 [2020-11-22 12:57:27,805 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 [2020-11-22 12:57:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-22 12:57:27,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 227. [2020-11-22 12:57:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-22 12:57:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 576 transitions. [2020-11-22 12:57:27,812 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 576 transitions. Word has length 30 [2020-11-22 12:57:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:27,812 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 576 transitions. [2020-11-22 12:57:27,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:57:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 576 transitions. [2020-11-22 12:57:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:57:27,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:27,813 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] [2020-11-22 12:57:27,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-22 12:57:27,814 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]=== [2020-11-22 12:57:27,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:27,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1938638579, now seen corresponding path program 5 times [2020-11-22 12:57:27,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:27,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210499295] [2020-11-22 12:57:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:28,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210499295] [2020-11-22 12:57:28,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:28,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-22 12:57:28,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152684664] [2020-11-22 12:57:28,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 12:57:28,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 12:57:28,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:57:28,294 INFO L87 Difference]: Start difference. First operand 227 states and 576 transitions. Second operand 13 states. [2020-11-22 12:57:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:28,799 INFO L93 Difference]: Finished difference Result 354 states and 880 transitions. [2020-11-22 12:57:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:57:28,799 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-11-22 12:57:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:28,801 INFO L225 Difference]: With dead ends: 354 [2020-11-22 12:57:28,801 INFO L226 Difference]: Without dead ends: 306 [2020-11-22 12:57:28,801 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 [2020-11-22 12:57:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-11-22 12:57:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 241. [2020-11-22 12:57:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-22 12:57:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 603 transitions. [2020-11-22 12:57:28,807 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 603 transitions. Word has length 30 [2020-11-22 12:57:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:28,807 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 603 transitions. [2020-11-22 12:57:28,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 12:57:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 603 transitions. [2020-11-22 12:57:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:57:28,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:28,808 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] [2020-11-22 12:57:28,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-22 12:57:28,809 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]=== [2020-11-22 12:57:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:28,809 INFO L82 PathProgramCache]: Analyzing trace with hash -584100403, now seen corresponding path program 6 times [2020-11-22 12:57:28,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:28,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278082561] [2020-11-22 12:57:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:29,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278082561] [2020-11-22 12:57:29,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:29,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-22 12:57:29,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787491869] [2020-11-22 12:57:29,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:57:29,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:29,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:57:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:57:29,143 INFO L87 Difference]: Start difference. First operand 241 states and 603 transitions. Second operand 12 states. [2020-11-22 12:57:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:29,384 INFO L93 Difference]: Finished difference Result 179 states and 424 transitions. [2020-11-22 12:57:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:57:29,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-22 12:57:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:29,385 INFO L225 Difference]: With dead ends: 179 [2020-11-22 12:57:29,385 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:29,386 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 [2020-11-22 12:57:29,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:29,386 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-11-22 12:57:29,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:29,388 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:29,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:57:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:29,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:29,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-22 12:57:29,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:29 BasicIcfg [2020-11-22 12:57:29,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:29,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:29,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:29,394 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:29,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:15" (3/4) ... [2020-11-22 12:57:29,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:29,403 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread0 [2020-11-22 12:57:29,404 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-11-22 12:57:29,404 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2020-11-22 12:57:29,404 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2020-11-22 12:57:29,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:57:29,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:57:29,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:29,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:29,447 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3029c307-90cd-4e3d-9223-80d2e3a6fca5/bin/utaipan/witness.graphml [2020-11-22 12:57:29,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:29,449 INFO L168 Benchmark]: Toolchain (without parser) took 15399.34 ms. Allocated memory was 100.7 MB in the beginning and 226.5 MB in the end (delta: 125.8 MB). Free memory was 70.9 MB in the beginning and 110.3 MB in the end (delta: -39.3 MB). Peak memory consumption was 86.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,449 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:29,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 924.31 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.7 MB in the beginning and 68.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 121.6 MB. Free memory was 68.1 MB in the beginning and 66.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,450 INFO L168 Benchmark]: Boogie Preprocessor took 31.07 ms. Allocated memory is still 121.6 MB. Free memory was 66.0 MB in the beginning and 64.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,451 INFO L168 Benchmark]: RCFGBuilder took 715.33 ms. Allocated memory is still 121.6 MB. Free memory was 64.7 MB in the beginning and 85.8 MB in the end (delta: -21.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,451 INFO L168 Benchmark]: TraceAbstraction took 13617.67 ms. Allocated memory was 121.6 MB in the beginning and 226.5 MB in the end (delta: 104.9 MB). Free memory was 85.8 MB in the beginning and 113.4 MB in the end (delta: -27.6 MB). Peak memory consumption was 77.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,451 INFO L168 Benchmark]: Witness Printer took 54.11 ms. Allocated memory is still 226.5 MB. Free memory was 113.4 MB in the beginning and 110.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:29,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 924.31 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.7 MB in the beginning and 68.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 121.6 MB. Free memory was 68.1 MB in the beginning and 66.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.07 ms. Allocated memory is still 121.6 MB. Free memory was 66.0 MB in the beginning and 64.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 715.33 ms. Allocated memory is still 121.6 MB. Free memory was 64.7 MB in the beginning and 85.8 MB in the end (delta: -21.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13617.67 ms. Allocated memory was 121.6 MB in the beginning and 226.5 MB in the end (delta: 104.9 MB). Free memory was 85.8 MB in the beginning and 113.4 MB in the end (delta: -27.6 MB). Peak memory consumption was 77.9 MB. Max. memory is 16.1 GB. * Witness Printer took 54.11 ms. Allocated memory is still 226.5 MB. Free memory was 113.4 MB in the beginning and 110.3 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: 3.5s, 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: 13.1s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 686 SDtfs, 957 SDslu, 1954 SDs, 0 SdLazy, 2074 SolverSat, 313 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 4.0s 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: 0.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 1811 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 436 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 120410 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...