./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_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/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 [2020-11-28 07:43:10,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:10,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:11,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:11,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:11,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:11,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:11,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:11,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:11,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:11,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:11,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:11,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:11,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:11,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:11,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:11,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:11,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:11,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:11,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:11,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:11,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:11,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:11,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:11,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:11,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:11,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:11,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:11,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:11,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:11,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:11,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:11,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:11,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:11,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:11,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:11,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:11,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:11,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:11,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:11,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:11,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:43:11,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:11,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:11,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:11,082 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:11,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:11,083 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:11,084 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:43:11,085 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:11,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:11,085 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:43:11,086 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:43:11,086 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:11,087 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:43:11,087 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:43:11,087 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:43:11,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:11,088 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:11,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:43:11,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:11,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:11,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:11,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:11,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:11,090 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:11,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:11,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:11,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:11,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:11,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:11,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:11,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:11,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:11,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:11,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:11,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:11,092 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:43:11,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:43:11,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:11,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:11,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:11,094 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_15e266a3-3a6b-457c-9287-02c2ea6c019f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4813f1ecdee15758ab36c7ea84ae454e7bf08642 [2020-11-28 07:43:11,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:11,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:11,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:11,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:11,412 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:11,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-11-28 07:43:11,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/data/d81f0da58/ec54e1f2e3df42488cd6d29e36edc32d/FLAGb67f95a4f [2020-11-28 07:43:12,014 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:12,014 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-11-28 07:43:12,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/data/d81f0da58/ec54e1f2e3df42488cd6d29e36edc32d/FLAGb67f95a4f [2020-11-28 07:43:12,304 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/data/d81f0da58/ec54e1f2e3df42488cd6d29e36edc32d [2020-11-28 07:43:12,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:12,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:12,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:12,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:12,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:12,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:12" (1/1) ... [2020-11-28 07:43:12,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f52e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:12, skipping insertion in model container [2020-11-28 07:43:12,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:12" (1/1) ... [2020-11-28 07:43:12,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:12,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:12,648 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-28 07:43:12,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:12,934 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:12,950 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-28 07:43:12,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:13,202 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:13,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13 WrapperNode [2020-11-28 07:43:13,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:13,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:13,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:13,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:13,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:13,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:13,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:13,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:13,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:13,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:13,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:13,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:13,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:43:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:43:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:43:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:43:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2020-11-28 07:43:13,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2020-11-28 07:43:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-11-28 07:43:13,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-11-28 07:43:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-11-28 07:43:13,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-11-28 07:43:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-11-28 07:43:13,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-11-28 07:43:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:43:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:43:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:43:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:13,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:13,382 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:43:13,990 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:13,990 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 07:43:13,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:13 BoogieIcfgContainer [2020-11-28 07:43:13,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:13,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:13,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:13,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:13,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:12" (1/3) ... [2020-11-28 07:43:13,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db065c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:13, skipping insertion in model container [2020-11-28 07:43:14,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (2/3) ... [2020-11-28 07:43:14,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db065c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:14, skipping insertion in model container [2020-11-28 07:43:14,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:13" (3/3) ... [2020-11-28 07:43:14,002 INFO L111 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2020-11-28 07:43:14,019 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:43:14,020 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:14,026 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:43:14,026 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:43:14,066 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,066 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,067 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,067 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,068 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,068 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,068 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,068 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,069 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,071 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,071 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,071 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,072 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,072 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,074 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,074 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,075 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,076 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,077 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,077 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,079 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,080 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,080 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,081 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,081 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,081 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,082 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,082 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,082 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,082 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,083 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,083 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,083 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,084 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,084 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,084 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,084 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,085 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,085 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,085 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,085 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,086 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,087 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,088 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,088 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,089 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,089 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,090 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,090 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,090 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,090 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,091 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,091 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,091 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,091 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,092 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,092 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,092 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,092 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,092 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,093 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,093 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,093 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,095 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,095 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,102 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,102 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,102 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,102 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,104 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,104 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,115 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,115 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,116 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,117 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,117 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,118 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,121 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,121 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,122 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,122 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,127 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,128 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,128 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,128 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,129 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,129 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,130 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,130 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,132 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,133 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,133 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,133 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,133 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,133 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,138 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,141 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,141 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,141 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,141 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,143 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,143 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,143 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,143 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,149 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,149 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,149 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,150 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,157 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,157 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,158 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,158 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,160 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,162 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,162 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:43:14,285 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2020-11-28 07:43:14,296 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-11-28 07:43:14,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:14,316 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:14,316 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:14,316 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:14,316 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:14,316 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:14,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:14,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:14,333 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:43:14,335 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 259 transitions, 898 flow [2020-11-28 07:43:14,338 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 259 transitions, 898 flow [2020-11-28 07:43:14,339 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 186 places, 259 transitions, 898 flow [2020-11-28 07:43:14,390 INFO L129 PetriNetUnfolder]: 10/124 cut-off events. [2020-11-28 07:43:14,391 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-28 07:43:14,399 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. [2020-11-28 07:43:14,407 INFO L116 LiptonReduction]: Number of co-enabled transitions 1648 [2020-11-28 07:43:16,234 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-11-28 07:43:16,352 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-28 07:43:17,073 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-11-28 07:43:17,325 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-28 07:43:17,451 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-28 07:43:17,748 INFO L131 LiptonReduction]: Checked pairs total: 22144 [2020-11-28 07:43:17,748 INFO L133 LiptonReduction]: Total number of compositions: 94 [2020-11-28 07:43:17,752 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 176 transitions, 732 flow [2020-11-28 07:43:17,877 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 998 states. [2020-11-28 07:43:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states. [2020-11-28 07:43:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:43:17,885 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:17,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:17,885 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]=== [2020-11-28 07:43:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:17,891 INFO L82 PathProgramCache]: Analyzing trace with hash -299289812, now seen corresponding path program 1 times [2020-11-28 07:43:17,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:17,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684403352] [2020-11-28 07:43:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:18,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684403352] [2020-11-28 07:43:18,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:18,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:43:18,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889377668] [2020-11-28 07:43:18,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:18,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:18,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:18,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:18,194 INFO L87 Difference]: Start difference. First operand 998 states. Second operand 5 states. [2020-11-28 07:43:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:18,492 INFO L93 Difference]: Finished difference Result 1381 states and 4916 transitions. [2020-11-28 07:43:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:43:18,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:43:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:18,534 INFO L225 Difference]: With dead ends: 1381 [2020-11-28 07:43:18,534 INFO L226 Difference]: Without dead ends: 1082 [2020-11-28 07:43:18,535 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 [2020-11-28 07:43:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-11-28 07:43:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 785. [2020-11-28 07:43:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-28 07:43:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2806 transitions. [2020-11-28 07:43:18,689 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2806 transitions. Word has length 10 [2020-11-28 07:43:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:18,689 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2806 transitions. [2020-11-28 07:43:18,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2806 transitions. [2020-11-28 07:43:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:43:18,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:18,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:18,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:43:18,691 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]=== [2020-11-28 07:43:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:18,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1610347620, now seen corresponding path program 2 times [2020-11-28 07:43:18,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:18,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62810378] [2020-11-28 07:43:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:18,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62810378] [2020-11-28 07:43:18,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:18,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:43:18,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869999075] [2020-11-28 07:43:18,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:43:18,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:18,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:43:18,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:18,777 INFO L87 Difference]: Start difference. First operand 785 states and 2806 transitions. Second operand 3 states. [2020-11-28 07:43:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:18,791 INFO L93 Difference]: Finished difference Result 841 states and 2942 transitions. [2020-11-28 07:43:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:43:18,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 07:43:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:18,801 INFO L225 Difference]: With dead ends: 841 [2020-11-28 07:43:18,801 INFO L226 Difference]: Without dead ends: 785 [2020-11-28 07:43:18,802 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 [2020-11-28 07:43:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-11-28 07:43:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2020-11-28 07:43:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-28 07:43:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2750 transitions. [2020-11-28 07:43:18,843 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2750 transitions. Word has length 10 [2020-11-28 07:43:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:18,843 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2750 transitions. [2020-11-28 07:43:18,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:43:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2750 transitions. [2020-11-28 07:43:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:43:18,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:18,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:18,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:43:18,844 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]=== [2020-11-28 07:43:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1619146835, now seen corresponding path program 1 times [2020-11-28 07:43:18,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:18,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650892936] [2020-11-28 07:43:18,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:19,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650892936] [2020-11-28 07:43:19,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:19,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:43:19,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005768005] [2020-11-28 07:43:19,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:19,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:19,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:19,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:19,004 INFO L87 Difference]: Start difference. First operand 785 states and 2750 transitions. Second operand 6 states. [2020-11-28 07:43:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:19,210 INFO L93 Difference]: Finished difference Result 1086 states and 3783 transitions. [2020-11-28 07:43:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:43:19,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:43:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:19,221 INFO L225 Difference]: With dead ends: 1086 [2020-11-28 07:43:19,222 INFO L226 Difference]: Without dead ends: 1086 [2020-11-28 07:43:19,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:43:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-11-28 07:43:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 785. [2020-11-28 07:43:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-11-28 07:43:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2750 transitions. [2020-11-28 07:43:19,296 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2750 transitions. Word has length 11 [2020-11-28 07:43:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:19,296 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 2750 transitions. [2020-11-28 07:43:19,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2750 transitions. [2020-11-28 07:43:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:43:19,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:19,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:19,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:43:19,298 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]=== [2020-11-28 07:43:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:19,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1363243349, now seen corresponding path program 2 times [2020-11-28 07:43:19,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:19,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571484565] [2020-11-28 07:43:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:19,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571484565] [2020-11-28 07:43:19,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:19,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:43:19,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251264015] [2020-11-28 07:43:19,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:19,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:19,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:19,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:19,419 INFO L87 Difference]: Start difference. First operand 785 states and 2750 transitions. Second operand 6 states. [2020-11-28 07:43:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:19,649 INFO L93 Difference]: Finished difference Result 1371 states and 4791 transitions. [2020-11-28 07:43:19,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:43:19,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:43:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:19,663 INFO L225 Difference]: With dead ends: 1371 [2020-11-28 07:43:19,663 INFO L226 Difference]: Without dead ends: 1371 [2020-11-28 07:43:19,664 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 [2020-11-28 07:43:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-11-28 07:43:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 770. [2020-11-28 07:43:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-11-28 07:43:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2726 transitions. [2020-11-28 07:43:19,708 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2726 transitions. Word has length 11 [2020-11-28 07:43:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:19,708 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 2726 transitions. [2020-11-28 07:43:19,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2726 transitions. [2020-11-28 07:43:19,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:43:19,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:19,720 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] [2020-11-28 07:43:19,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:43:19,720 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]=== [2020-11-28 07:43:19,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:19,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1709084529, now seen corresponding path program 1 times [2020-11-28 07:43:19,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:19,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617673579] [2020-11-28 07:43:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:19,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617673579] [2020-11-28 07:43:19,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:19,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:43:19,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546657631] [2020-11-28 07:43:19,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:19,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:19,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:19,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:19,837 INFO L87 Difference]: Start difference. First operand 770 states and 2726 transitions. Second operand 5 states. [2020-11-28 07:43:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:19,952 INFO L93 Difference]: Finished difference Result 1018 states and 3463 transitions. [2020-11-28 07:43:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:43:19,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-28 07:43:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:19,960 INFO L225 Difference]: With dead ends: 1018 [2020-11-28 07:43:19,961 INFO L226 Difference]: Without dead ends: 769 [2020-11-28 07:43:19,961 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 [2020-11-28 07:43:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-11-28 07:43:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2020-11-28 07:43:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-11-28 07:43:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2724 transitions. [2020-11-28 07:43:19,995 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2724 transitions. Word has length 24 [2020-11-28 07:43:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:19,996 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 2724 transitions. [2020-11-28 07:43:19,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2724 transitions. [2020-11-28 07:43:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:43:19,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:19,999 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] [2020-11-28 07:43:19,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:43:19,999 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]=== [2020-11-28 07:43:19,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:20,000 INFO L82 PathProgramCache]: Analyzing trace with hash -2020757561, now seen corresponding path program 2 times [2020-11-28 07:43:20,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:20,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232526467] [2020-11-28 07:43:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:20,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232526467] [2020-11-28 07:43:20,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:20,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:43:20,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843216241] [2020-11-28 07:43:20,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:20,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:20,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:20,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:20,067 INFO L87 Difference]: Start difference. First operand 769 states and 2724 transitions. Second operand 4 states. [2020-11-28 07:43:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:20,177 INFO L93 Difference]: Finished difference Result 1017 states and 3380 transitions. [2020-11-28 07:43:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:43:20,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 07:43:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:20,184 INFO L225 Difference]: With dead ends: 1017 [2020-11-28 07:43:20,185 INFO L226 Difference]: Without dead ends: 689 [2020-11-28 07:43:20,185 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 [2020-11-28 07:43:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-11-28 07:43:20,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 541. [2020-11-28 07:43:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-11-28 07:43:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1774 transitions. [2020-11-28 07:43:20,210 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1774 transitions. Word has length 24 [2020-11-28 07:43:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:20,211 INFO L481 AbstractCegarLoop]: Abstraction has 541 states and 1774 transitions. [2020-11-28 07:43:20,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1774 transitions. [2020-11-28 07:43:20,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 07:43:20,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:20,214 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] [2020-11-28 07:43:20,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:43:20,214 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]=== [2020-11-28 07:43:20,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:20,215 INFO L82 PathProgramCache]: Analyzing trace with hash 529385078, now seen corresponding path program 1 times [2020-11-28 07:43:20,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:20,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240042711] [2020-11-28 07:43:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:20,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240042711] [2020-11-28 07:43:20,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:20,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:43:20,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814298330] [2020-11-28 07:43:20,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:20,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:20,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:20,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:20,295 INFO L87 Difference]: Start difference. First operand 541 states and 1774 transitions. Second operand 4 states. [2020-11-28 07:43:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:20,368 INFO L93 Difference]: Finished difference Result 563 states and 1795 transitions. [2020-11-28 07:43:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:43:20,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-28 07:43:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:20,373 INFO L225 Difference]: With dead ends: 563 [2020-11-28 07:43:20,373 INFO L226 Difference]: Without dead ends: 485 [2020-11-28 07:43:20,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-11-28 07:43:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2020-11-28 07:43:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-11-28 07:43:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1540 transitions. [2020-11-28 07:43:20,393 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1540 transitions. Word has length 26 [2020-11-28 07:43:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:20,394 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 1540 transitions. [2020-11-28 07:43:20,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1540 transitions. [2020-11-28 07:43:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 07:43:20,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:20,396 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] [2020-11-28 07:43:20,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:43:20,396 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]=== [2020-11-28 07:43:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:20,397 INFO L82 PathProgramCache]: Analyzing trace with hash -771274933, now seen corresponding path program 1 times [2020-11-28 07:43:20,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:20,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175921375] [2020-11-28 07:43:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:20,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175921375] [2020-11-28 07:43:20,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:20,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:43:20,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072940511] [2020-11-28 07:43:20,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:20,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:20,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:20,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:20,506 INFO L87 Difference]: Start difference. First operand 485 states and 1540 transitions. Second operand 6 states. [2020-11-28 07:43:20,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:20,615 INFO L93 Difference]: Finished difference Result 648 states and 1981 transitions. [2020-11-28 07:43:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:43:20,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-28 07:43:20,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:20,620 INFO L225 Difference]: With dead ends: 648 [2020-11-28 07:43:20,620 INFO L226 Difference]: Without dead ends: 478 [2020-11-28 07:43:20,620 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 [2020-11-28 07:43:20,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-11-28 07:43:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2020-11-28 07:43:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-11-28 07:43:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1524 transitions. [2020-11-28 07:43:20,638 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1524 transitions. Word has length 28 [2020-11-28 07:43:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:20,640 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 1524 transitions. [2020-11-28 07:43:20,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1524 transitions. [2020-11-28 07:43:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 07:43:20,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:20,643 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] [2020-11-28 07:43:20,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:43:20,643 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]=== [2020-11-28 07:43:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:20,644 INFO L82 PathProgramCache]: Analyzing trace with hash 942718069, now seen corresponding path program 2 times [2020-11-28 07:43:20,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:20,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133055597] [2020-11-28 07:43:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:20,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133055597] [2020-11-28 07:43:20,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:20,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:43:20,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603517631] [2020-11-28 07:43:20,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:43:20,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:20,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:43:20,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:20,778 INFO L87 Difference]: Start difference. First operand 478 states and 1524 transitions. Second operand 7 states. [2020-11-28 07:43:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:20,985 INFO L93 Difference]: Finished difference Result 638 states and 1960 transitions. [2020-11-28 07:43:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:43:20,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-11-28 07:43:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:20,990 INFO L225 Difference]: With dead ends: 638 [2020-11-28 07:43:20,990 INFO L226 Difference]: Without dead ends: 475 [2020-11-28 07:43:20,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:43:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-11-28 07:43:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2020-11-28 07:43:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-11-28 07:43:21,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1516 transitions. [2020-11-28 07:43:21,007 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1516 transitions. Word has length 28 [2020-11-28 07:43:21,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:21,007 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 1516 transitions. [2020-11-28 07:43:21,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:43:21,007 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1516 transitions. [2020-11-28 07:43:21,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 07:43:21,011 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:21,011 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] [2020-11-28 07:43:21,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:43:21,011 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]=== [2020-11-28 07:43:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash -785554330, now seen corresponding path program 1 times [2020-11-28 07:43:21,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:21,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280608042] [2020-11-28 07:43:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:21,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280608042] [2020-11-28 07:43:21,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:21,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 07:43:21,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101457350] [2020-11-28 07:43:21,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:43:21,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:21,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:43:21,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:43:21,194 INFO L87 Difference]: Start difference. First operand 475 states and 1516 transitions. Second operand 9 states. [2020-11-28 07:43:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:21,427 INFO L93 Difference]: Finished difference Result 616 states and 1899 transitions. [2020-11-28 07:43:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:21,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-11-28 07:43:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:21,432 INFO L225 Difference]: With dead ends: 616 [2020-11-28 07:43:21,432 INFO L226 Difference]: Without dead ends: 457 [2020-11-28 07:43:21,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:43:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-11-28 07:43:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2020-11-28 07:43:21,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-11-28 07:43:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1446 transitions. [2020-11-28 07:43:21,449 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1446 transitions. Word has length 28 [2020-11-28 07:43:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:21,450 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 1446 transitions. [2020-11-28 07:43:21,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:43:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1446 transitions. [2020-11-28 07:43:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 07:43:21,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:21,452 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] [2020-11-28 07:43:21,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:43:21,452 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]=== [2020-11-28 07:43:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:21,452 INFO L82 PathProgramCache]: Analyzing trace with hash -403766554, now seen corresponding path program 2 times [2020-11-28 07:43:21,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:21,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027456015] [2020-11-28 07:43:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:21,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027456015] [2020-11-28 07:43:21,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:21,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 07:43:21,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720829649] [2020-11-28 07:43:21,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:43:21,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:43:21,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:43:21,680 INFO L87 Difference]: Start difference. First operand 457 states and 1446 transitions. Second operand 10 states. [2020-11-28 07:43:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:21,990 INFO L93 Difference]: Finished difference Result 705 states and 2218 transitions. [2020-11-28 07:43:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:43:21,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-11-28 07:43:21,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:21,996 INFO L225 Difference]: With dead ends: 705 [2020-11-28 07:43:21,996 INFO L226 Difference]: Without dead ends: 577 [2020-11-28 07:43:21,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:43:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-11-28 07:43:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 449. [2020-11-28 07:43:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-11-28 07:43:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1410 transitions. [2020-11-28 07:43:22,013 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1410 transitions. Word has length 28 [2020-11-28 07:43:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:22,014 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 1410 transitions. [2020-11-28 07:43:22,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:43:22,014 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1410 transitions. [2020-11-28 07:43:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 07:43:22,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:22,017 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] [2020-11-28 07:43:22,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:43:22,017 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]=== [2020-11-28 07:43:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash 994711798, now seen corresponding path program 3 times [2020-11-28 07:43:22,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:22,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778090924] [2020-11-28 07:43:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:22,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778090924] [2020-11-28 07:43:22,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:22,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 07:43:22,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549812786] [2020-11-28 07:43:22,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:43:22,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:22,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:43:22,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:43:22,309 INFO L87 Difference]: Start difference. First operand 449 states and 1410 transitions. Second operand 13 states. [2020-11-28 07:43:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:22,721 INFO L93 Difference]: Finished difference Result 481 states and 1418 transitions. [2020-11-28 07:43:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:43:22,722 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-11-28 07:43:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:22,723 INFO L225 Difference]: With dead ends: 481 [2020-11-28 07:43:22,724 INFO L226 Difference]: Without dead ends: 257 [2020-11-28 07:43:22,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-28 07:43:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-28 07:43:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2020-11-28 07:43:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-11-28 07:43:22,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 666 transitions. [2020-11-28 07:43:22,732 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 666 transitions. Word has length 28 [2020-11-28 07:43:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:22,733 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 666 transitions. [2020-11-28 07:43:22,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:43:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 666 transitions. [2020-11-28 07:43:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:43:22,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:22,734 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] [2020-11-28 07:43:22,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:43:22,734 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]=== [2020-11-28 07:43:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1537187255, now seen corresponding path program 1 times [2020-11-28 07:43:22,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:22,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271456617] [2020-11-28 07:43:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:23,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271456617] [2020-11-28 07:43:23,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:23,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-28 07:43:23,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034576259] [2020-11-28 07:43:23,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:43:23,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:23,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:43:23,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:43:23,080 INFO L87 Difference]: Start difference. First operand 257 states and 666 transitions. Second operand 12 states. [2020-11-28 07:43:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:23,460 INFO L93 Difference]: Finished difference Result 556 states and 1432 transitions. [2020-11-28 07:43:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:23,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-28 07:43:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:23,464 INFO L225 Difference]: With dead ends: 556 [2020-11-28 07:43:23,464 INFO L226 Difference]: Without dead ends: 413 [2020-11-28 07:43:23,464 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 [2020-11-28 07:43:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-11-28 07:43:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 269. [2020-11-28 07:43:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-11-28 07:43:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 683 transitions. [2020-11-28 07:43:23,474 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 683 transitions. Word has length 30 [2020-11-28 07:43:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:23,474 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 683 transitions. [2020-11-28 07:43:23,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:43:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 683 transitions. [2020-11-28 07:43:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:43:23,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:23,475 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] [2020-11-28 07:43:23,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 07:43:23,476 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]=== [2020-11-28 07:43:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:23,476 INFO L82 PathProgramCache]: Analyzing trace with hash -138708903, now seen corresponding path program 2 times [2020-11-28 07:43:23,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:23,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577566668] [2020-11-28 07:43:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:23,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577566668] [2020-11-28 07:43:23,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:23,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 07:43:23,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608759177] [2020-11-28 07:43:23,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:43:23,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:23,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:43:23,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:43:23,889 INFO L87 Difference]: Start difference. First operand 269 states and 683 transitions. Second operand 13 states. [2020-11-28 07:43:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:24,413 INFO L93 Difference]: Finished difference Result 467 states and 1198 transitions. [2020-11-28 07:43:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:43:24,414 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-11-28 07:43:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:24,417 INFO L225 Difference]: With dead ends: 467 [2020-11-28 07:43:24,417 INFO L226 Difference]: Without dead ends: 419 [2020-11-28 07:43:24,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-11-28 07:43:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-11-28 07:43:24,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 301. [2020-11-28 07:43:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-11-28 07:43:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 779 transitions. [2020-11-28 07:43:24,429 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 779 transitions. Word has length 30 [2020-11-28 07:43:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:24,429 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 779 transitions. [2020-11-28 07:43:24,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:43:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 779 transitions. [2020-11-28 07:43:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:43:24,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:24,431 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] [2020-11-28 07:43:24,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:43:24,432 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]=== [2020-11-28 07:43:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:24,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1633519411, now seen corresponding path program 3 times [2020-11-28 07:43:24,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:24,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331786678] [2020-11-28 07:43:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:24,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331786678] [2020-11-28 07:43:24,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:24,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-28 07:43:24,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703114406] [2020-11-28 07:43:24,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:43:24,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:24,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:43:24,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:43:24,757 INFO L87 Difference]: Start difference. First operand 301 states and 779 transitions. Second operand 12 states. [2020-11-28 07:43:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:25,069 INFO L93 Difference]: Finished difference Result 357 states and 899 transitions. [2020-11-28 07:43:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:25,069 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-28 07:43:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:25,071 INFO L225 Difference]: With dead ends: 357 [2020-11-28 07:43:25,071 INFO L226 Difference]: Without dead ends: 253 [2020-11-28 07:43:25,071 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 [2020-11-28 07:43:25,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-11-28 07:43:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2020-11-28 07:43:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-11-28 07:43:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 639 transitions. [2020-11-28 07:43:25,079 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 639 transitions. Word has length 30 [2020-11-28 07:43:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:25,079 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 639 transitions. [2020-11-28 07:43:25,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:43:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 639 transitions. [2020-11-28 07:43:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:43:25,080 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:25,080 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] [2020-11-28 07:43:25,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 07:43:25,081 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]=== [2020-11-28 07:43:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash 540160227, now seen corresponding path program 4 times [2020-11-28 07:43:25,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:25,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736131312] [2020-11-28 07:43:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:25,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736131312] [2020-11-28 07:43:25,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:25,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-28 07:43:25,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490238141] [2020-11-28 07:43:25,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:43:25,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:25,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:43:25,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:43:25,348 INFO L87 Difference]: Start difference. First operand 253 states and 639 transitions. Second operand 12 states. [2020-11-28 07:43:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:25,605 INFO L93 Difference]: Finished difference Result 309 states and 759 transitions. [2020-11-28 07:43:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:43:25,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-28 07:43:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:25,609 INFO L225 Difference]: With dead ends: 309 [2020-11-28 07:43:25,609 INFO L226 Difference]: Without dead ends: 236 [2020-11-28 07:43:25,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:43:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-28 07:43:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 227. [2020-11-28 07:43:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-28 07:43:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 576 transitions. [2020-11-28 07:43:25,616 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 576 transitions. Word has length 30 [2020-11-28 07:43:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:25,617 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 576 transitions. [2020-11-28 07:43:25,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:43:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 576 transitions. [2020-11-28 07:43:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:43:25,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:25,618 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] [2020-11-28 07:43:25,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 07:43:25,618 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]=== [2020-11-28 07:43:25,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:25,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1938638579, now seen corresponding path program 5 times [2020-11-28 07:43:25,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:25,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619564661] [2020-11-28 07:43:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:25,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619564661] [2020-11-28 07:43:25,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:25,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 07:43:25,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255433519] [2020-11-28 07:43:25,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:43:25,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:25,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:43:25,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:43:25,911 INFO L87 Difference]: Start difference. First operand 227 states and 576 transitions. Second operand 13 states. [2020-11-28 07:43:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:26,395 INFO L93 Difference]: Finished difference Result 354 states and 880 transitions. [2020-11-28 07:43:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:26,396 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-11-28 07:43:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:26,398 INFO L225 Difference]: With dead ends: 354 [2020-11-28 07:43:26,398 INFO L226 Difference]: Without dead ends: 306 [2020-11-28 07:43:26,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-11-28 07:43:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-11-28 07:43:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 241. [2020-11-28 07:43:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-28 07:43:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 603 transitions. [2020-11-28 07:43:26,408 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 603 transitions. Word has length 30 [2020-11-28 07:43:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:26,408 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 603 transitions. [2020-11-28 07:43:26,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:43:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 603 transitions. [2020-11-28 07:43:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:43:26,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:26,410 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] [2020-11-28 07:43:26,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 07:43:26,410 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]=== [2020-11-28 07:43:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:26,411 INFO L82 PathProgramCache]: Analyzing trace with hash -584100403, now seen corresponding path program 6 times [2020-11-28 07:43:26,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:26,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141359779] [2020-11-28 07:43:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:26,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141359779] [2020-11-28 07:43:26,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:26,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-28 07:43:26,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238193526] [2020-11-28 07:43:26,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:43:26,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:26,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:43:26,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:43:26,665 INFO L87 Difference]: Start difference. First operand 241 states and 603 transitions. Second operand 12 states. [2020-11-28 07:43:26,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:26,855 INFO L93 Difference]: Finished difference Result 179 states and 424 transitions. [2020-11-28 07:43:26,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:43:26,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-28 07:43:26,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:26,856 INFO L225 Difference]: With dead ends: 179 [2020-11-28 07:43:26,856 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:43:26,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:43:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:43:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:43:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:43:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:43:26,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-11-28 07:43:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:26,857 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:43:26,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:43:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:43:26,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:43:26,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 07:43:26,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:26 BasicIcfg [2020-11-28 07:43:26,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:26,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:26,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:26,861 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:26,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:13" (3/4) ... [2020-11-28 07:43:26,864 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:43:26,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread0 [2020-11-28 07:43:26,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-11-28 07:43:26,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2020-11-28 07:43:26,871 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2020-11-28 07:43:26,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:43:26,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:43:26,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:43:26,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:43:26,905 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15e266a3-3a6b-457c-9287-02c2ea6c019f/bin/utaipan/witness.graphml [2020-11-28 07:43:26,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:26,906 INFO L168 Benchmark]: Toolchain (without parser) took 14597.62 ms. Allocated memory was 102.8 MB in the beginning and 222.3 MB in the end (delta: 119.5 MB). Free memory was 75.6 MB in the beginning and 65.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 130.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:26,907 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 60.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:26,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 893.98 ms. Allocated memory is still 102.8 MB. Free memory was 75.4 MB in the beginning and 51.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:26,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 102.8 MB. Free memory was 51.4 MB in the beginning and 49.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:26,908 INFO L168 Benchmark]: Boogie Preprocessor took 30.29 ms. Allocated memory is still 102.8 MB. Free memory was 49.3 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:26,908 INFO L168 Benchmark]: RCFGBuilder took 708.34 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 47.7 MB in the beginning and 77.9 MB in the end (delta: -30.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:26,909 INFO L168 Benchmark]: TraceAbstraction took 12866.78 ms. Allocated memory was 123.7 MB in the beginning and 222.3 MB in the end (delta: 98.6 MB). Free memory was 77.2 MB in the beginning and 68.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 106.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:26,909 INFO L168 Benchmark]: Witness Printer took 44.38 ms. Allocated memory is still 222.3 MB. Free memory was 68.3 MB in the beginning and 65.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:26,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 60.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 893.98 ms. Allocated memory is still 102.8 MB. Free memory was 75.4 MB in the beginning and 51.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 102.8 MB. Free memory was 51.4 MB in the beginning and 49.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.29 ms. Allocated memory is still 102.8 MB. Free memory was 49.3 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 708.34 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 47.7 MB in the beginning and 77.9 MB in the end (delta: -30.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12866.78 ms. Allocated memory was 123.7 MB in the beginning and 222.3 MB in the end (delta: 98.6 MB). Free memory was 77.2 MB in the beginning and 68.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 106.7 MB. Max. memory is 16.1 GB. * Witness Printer took 44.38 ms. Allocated memory is still 222.3 MB. Free memory was 68.3 MB in the beginning and 65.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1135 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 158 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 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: 12.5s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 686 SDtfs, 957 SDslu, 1954 SDs, 0 SdLazy, 2074 SolverSat, 313 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.5s 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, 3.0s InterpolantComputationTime, 436 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 120439 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...