./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-token-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d66a07d2a90ded112831066684eab385c0c1369 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:25:57,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:25:57,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:25:57,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:25:57,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:25:57,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:25:57,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:25:57,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:25:57,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:25:57,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:25:57,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:25:57,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:25:57,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:25:57,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:25:57,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:25:57,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:25:57,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:25:57,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:25:57,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:25:57,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:25:57,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:25:57,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:25:57,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:25:57,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:25:57,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:25:57,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:25:57,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:25:57,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:25:57,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:25:57,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:25:57,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:25:57,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:25:57,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:25:57,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:25:57,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:25:57,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:25:57,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:25:57,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:25:57,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:25:57,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:25:57,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:25:57,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2020-11-28 07:25:57,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:25:57,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:25:57,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:25:57,333 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:25:57,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:25:57,334 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:25:57,334 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:25:57,334 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:25:57,334 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:25:57,335 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:25:57,335 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:25:57,335 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:25:57,336 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:25:57,336 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:25:57,336 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:25:57,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:25:57,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:25:57,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:25:57,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:25:57,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:25:57,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:25:57,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:25:57,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:25:57,340 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:25:57,340 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:25:57,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:25:57,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:25:57,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:25:57,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:25:57,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:25:57,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:25:57,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:25:57,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:25:57,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:25:57,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:25:57,343 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:25:57,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:25:57,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:25:57,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:25:57,345 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_6e313163-9a3e-43a6-bd68-d128f83a9835/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d66a07d2a90ded112831066684eab385c0c1369 [2020-11-28 07:25:57,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:25:57,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:25:57,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:25:57,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:25:57,607 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:25:57,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/../../sv-benchmarks/c/forester-heap/dll-token-2.i [2020-11-28 07:25:57,693 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/data/9fe2782dd/acd8e0a4725f44ba8a7db1a7b6d9cd64/FLAG30846d367 [2020-11-28 07:25:58,200 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:25:58,201 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/sv-benchmarks/c/forester-heap/dll-token-2.i [2020-11-28 07:25:58,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/data/9fe2782dd/acd8e0a4725f44ba8a7db1a7b6d9cd64/FLAG30846d367 [2020-11-28 07:25:58,533 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/data/9fe2782dd/acd8e0a4725f44ba8a7db1a7b6d9cd64 [2020-11-28 07:25:58,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:25:58,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:25:58,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:25:58,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:25:58,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:25:58,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:25:58" (1/1) ... [2020-11-28 07:25:58,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b780fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:58, skipping insertion in model container [2020-11-28 07:25:58,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:25:58" (1/1) ... [2020-11-28 07:25:58,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:25:58,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:25:58,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:25:58,969 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:25:59,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:25:59,093 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:25:59,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59 WrapperNode [2020-11-28 07:25:59,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:25:59,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:25:59,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:25:59,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:25:59,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:25:59,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:25:59,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:25:59,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:25:59,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... [2020-11-28 07:25:59,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:25:59,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:25:59,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:25:59,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:25:59,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/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 07:25:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:25:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:25:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:25:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 07:25:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:25:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 07:25:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:25:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:25:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:25:59,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:26:00,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:26:00,073 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-28 07:26:00,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:00 BoogieIcfgContainer [2020-11-28 07:26:00,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:26:00,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:26:00,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:26:00,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:26:00,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:25:58" (1/3) ... [2020-11-28 07:26:00,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d319df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:26:00, skipping insertion in model container [2020-11-28 07:26:00,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:59" (2/3) ... [2020-11-28 07:26:00,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d319df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:26:00, skipping insertion in model container [2020-11-28 07:26:00,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:00" (3/3) ... [2020-11-28 07:26:00,084 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-11-28 07:26:00,095 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:26:00,099 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 64 error locations. [2020-11-28 07:26:00,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2020-11-28 07:26:00,131 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:26:00,131 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 07:26:00,131 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:26:00,131 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:26:00,131 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:26:00,131 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:26:00,132 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:26:00,132 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:26:00,151 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-11-28 07:26:00,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-28 07:26:00,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:00,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-28 07:26:00,158 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:00,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:00,164 INFO L82 PathProgramCache]: Analyzing trace with hash 10017, now seen corresponding path program 1 times [2020-11-28 07:26:00,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:00,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595315147] [2020-11-28 07:26:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:00,333 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 07:26:00,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595315147] [2020-11-28 07:26:00,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:00,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:26:00,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56194379] [2020-11-28 07:26:00,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:26:00,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:00,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:26:00,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:26:00,359 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2020-11-28 07:26:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:00,571 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2020-11-28 07:26:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:26:00,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-28 07:26:00,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:00,583 INFO L225 Difference]: With dead ends: 147 [2020-11-28 07:26:00,583 INFO L226 Difference]: Without dead ends: 146 [2020-11-28 07:26:00,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:26:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-28 07:26:00,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 125. [2020-11-28 07:26:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-28 07:26:00,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-11-28 07:26:00,652 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 2 [2020-11-28 07:26:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:00,653 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-11-28 07:26:00,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:26:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-11-28 07:26:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-28 07:26:00,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:00,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-28 07:26:00,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:26:00,655 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:00,657 INFO L82 PathProgramCache]: Analyzing trace with hash 10018, now seen corresponding path program 1 times [2020-11-28 07:26:00,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:00,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792313808] [2020-11-28 07:26:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:00,731 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 07:26:00,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792313808] [2020-11-28 07:26:00,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:00,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:26:00,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717094254] [2020-11-28 07:26:00,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:26:00,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:00,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:26:00,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:26:00,734 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 3 states. [2020-11-28 07:26:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:00,866 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2020-11-28 07:26:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:26:00,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-28 07:26:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:00,868 INFO L225 Difference]: With dead ends: 151 [2020-11-28 07:26:00,869 INFO L226 Difference]: Without dead ends: 151 [2020-11-28 07:26:00,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:26:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-28 07:26:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 122. [2020-11-28 07:26:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 07:26:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-11-28 07:26:00,878 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 2 [2020-11-28 07:26:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:00,879 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-11-28 07:26:00,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:26:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-11-28 07:26:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:26:00,880 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:00,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:00,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:26:00,880 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:00,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:00,881 INFO L82 PathProgramCache]: Analyzing trace with hash -998707173, now seen corresponding path program 1 times [2020-11-28 07:26:00,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:00,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177325470] [2020-11-28 07:26:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:00,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177325470] [2020-11-28 07:26:00,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:00,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:26:00,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775730678] [2020-11-28 07:26:00,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:26:00,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:00,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:26:00,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:26:00,966 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 4 states. [2020-11-28 07:26:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:01,174 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2020-11-28 07:26:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:26:01,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:26:01,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:01,176 INFO L225 Difference]: With dead ends: 127 [2020-11-28 07:26:01,176 INFO L226 Difference]: Without dead ends: 127 [2020-11-28 07:26:01,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:26:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-28 07:26:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2020-11-28 07:26:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 07:26:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-11-28 07:26:01,184 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 7 [2020-11-28 07:26:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:01,184 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-11-28 07:26:01,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:26:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-11-28 07:26:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:26:01,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:01,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:01,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:26:01,185 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:01,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:01,186 INFO L82 PathProgramCache]: Analyzing trace with hash -998707172, now seen corresponding path program 1 times [2020-11-28 07:26:01,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:01,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405125557] [2020-11-28 07:26:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:01,258 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 07:26:01,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405125557] [2020-11-28 07:26:01,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:01,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:26:01,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825564829] [2020-11-28 07:26:01,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:26:01,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:01,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:26:01,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:26:01,261 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 4 states. [2020-11-28 07:26:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:01,539 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2020-11-28 07:26:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:26:01,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:26:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:01,542 INFO L225 Difference]: With dead ends: 195 [2020-11-28 07:26:01,542 INFO L226 Difference]: Without dead ends: 195 [2020-11-28 07:26:01,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:26:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-11-28 07:26:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 140. [2020-11-28 07:26:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-28 07:26:01,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2020-11-28 07:26:01,555 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 7 [2020-11-28 07:26:01,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:01,556 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2020-11-28 07:26:01,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:26:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2020-11-28 07:26:01,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:26:01,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:01,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:01,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:26:01,558 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:01,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:01,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1979870033, now seen corresponding path program 1 times [2020-11-28 07:26:01,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:01,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632595324] [2020-11-28 07:26:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:01,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632595324] [2020-11-28 07:26:01,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:01,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:26:01,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803159212] [2020-11-28 07:26:01,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:26:01,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:01,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:26:01,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:26:01,662 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand 5 states. [2020-11-28 07:26:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:01,975 INFO L93 Difference]: Finished difference Result 210 states and 227 transitions. [2020-11-28 07:26:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:26:01,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:26:01,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:01,980 INFO L225 Difference]: With dead ends: 210 [2020-11-28 07:26:01,980 INFO L226 Difference]: Without dead ends: 210 [2020-11-28 07:26:01,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:26:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-11-28 07:26:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 139. [2020-11-28 07:26:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-28 07:26:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2020-11-28 07:26:02,003 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 9 [2020-11-28 07:26:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:02,004 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2020-11-28 07:26:02,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:26:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2020-11-28 07:26:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:26:02,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:02,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:02,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:26:02,005 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:02,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1979870032, now seen corresponding path program 1 times [2020-11-28 07:26:02,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:02,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69246701] [2020-11-28 07:26:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:02,126 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 07:26:02,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69246701] [2020-11-28 07:26:02,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:02,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:26:02,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026304995] [2020-11-28 07:26:02,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:26:02,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:02,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:26:02,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:26:02,129 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand 5 states. [2020-11-28 07:26:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:02,476 INFO L93 Difference]: Finished difference Result 235 states and 255 transitions. [2020-11-28 07:26:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:26:02,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:26:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:02,478 INFO L225 Difference]: With dead ends: 235 [2020-11-28 07:26:02,478 INFO L226 Difference]: Without dead ends: 235 [2020-11-28 07:26:02,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:26:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-11-28 07:26:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 138. [2020-11-28 07:26:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-28 07:26:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2020-11-28 07:26:02,486 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 9 [2020-11-28 07:26:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:02,486 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2020-11-28 07:26:02,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:26:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2020-11-28 07:26:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:26:02,487 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:02,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:02,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:26:02,488 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:02,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:02,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1240097297, now seen corresponding path program 1 times [2020-11-28 07:26:02,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:02,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34816417] [2020-11-28 07:26:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:02,581 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 07:26:02,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34816417] [2020-11-28 07:26:02,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:02,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:26:02,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408932956] [2020-11-28 07:26:02,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:26:02,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:02,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:26:02,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:26:02,583 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand 5 states. [2020-11-28 07:26:02,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:02,811 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2020-11-28 07:26:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:26:02,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:26:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:02,812 INFO L225 Difference]: With dead ends: 137 [2020-11-28 07:26:02,812 INFO L226 Difference]: Without dead ends: 137 [2020-11-28 07:26:02,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:26:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-28 07:26:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-11-28 07:26:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-28 07:26:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2020-11-28 07:26:02,818 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 10 [2020-11-28 07:26:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:02,818 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2020-11-28 07:26:02,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:26:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2020-11-28 07:26:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:26:02,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:02,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:02,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:26:02,819 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:02,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1240097298, now seen corresponding path program 1 times [2020-11-28 07:26:02,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:02,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918603300] [2020-11-28 07:26:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:02,892 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 07:26:02,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918603300] [2020-11-28 07:26:02,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:02,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:26:02,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932362127] [2020-11-28 07:26:02,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:26:02,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:02,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:26:02,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:26:02,894 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand 5 states. [2020-11-28 07:26:03,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:03,085 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2020-11-28 07:26:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:26:03,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:26:03,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:03,086 INFO L225 Difference]: With dead ends: 145 [2020-11-28 07:26:03,086 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:26:03,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:26:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:26:03,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 136. [2020-11-28 07:26:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 07:26:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2020-11-28 07:26:03,091 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 10 [2020-11-28 07:26:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:03,092 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2020-11-28 07:26:03,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:26:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2020-11-28 07:26:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:26:03,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:03,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:03,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:26:03,093 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:03,093 INFO L82 PathProgramCache]: Analyzing trace with hash 15677208, now seen corresponding path program 1 times [2020-11-28 07:26:03,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:03,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275849174] [2020-11-28 07:26:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:03,198 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 07:26:03,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275849174] [2020-11-28 07:26:03,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:03,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:26:03,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472218015] [2020-11-28 07:26:03,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:26:03,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:03,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:26:03,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:26:03,200 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 8 states. [2020-11-28 07:26:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:03,566 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2020-11-28 07:26:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:26:03,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-28 07:26:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:03,568 INFO L225 Difference]: With dead ends: 141 [2020-11-28 07:26:03,568 INFO L226 Difference]: Without dead ends: 141 [2020-11-28 07:26:03,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:26:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-28 07:26:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2020-11-28 07:26:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-28 07:26:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-11-28 07:26:03,572 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 11 [2020-11-28 07:26:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:03,573 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-11-28 07:26:03,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:26:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-11-28 07:26:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:26:03,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:03,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:03,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:26:03,574 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:03,574 INFO L82 PathProgramCache]: Analyzing trace with hash 15677209, now seen corresponding path program 1 times [2020-11-28 07:26:03,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:03,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840783703] [2020-11-28 07:26:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:03,738 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 07:26:03,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840783703] [2020-11-28 07:26:03,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:03,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 07:26:03,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620291996] [2020-11-28 07:26:03,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:26:03,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:03,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:26:03,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:26:03,741 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 9 states. [2020-11-28 07:26:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:04,417 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-11-28 07:26:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:26:04,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-11-28 07:26:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:04,419 INFO L225 Difference]: With dead ends: 136 [2020-11-28 07:26:04,419 INFO L226 Difference]: Without dead ends: 136 [2020-11-28 07:26:04,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-11-28 07:26:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-28 07:26:04,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 116. [2020-11-28 07:26:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-28 07:26:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2020-11-28 07:26:04,423 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 11 [2020-11-28 07:26:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:04,423 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2020-11-28 07:26:04,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:26:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2020-11-28 07:26:04,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:26:04,424 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:04,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:04,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:26:04,424 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:04,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:04,424 INFO L82 PathProgramCache]: Analyzing trace with hash -2027353143, now seen corresponding path program 1 times [2020-11-28 07:26:04,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:04,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948170485] [2020-11-28 07:26:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:04,565 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 07:26:04,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948170485] [2020-11-28 07:26:04,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:04,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:26:04,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998307983] [2020-11-28 07:26:04,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:26:04,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:04,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:26:04,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:26:04,567 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 7 states. [2020-11-28 07:26:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:04,821 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2020-11-28 07:26:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:26:04,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-28 07:26:04,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:04,822 INFO L225 Difference]: With dead ends: 115 [2020-11-28 07:26:04,822 INFO L226 Difference]: Without dead ends: 115 [2020-11-28 07:26:04,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:26:04,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-28 07:26:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-11-28 07:26:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-28 07:26:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2020-11-28 07:26:04,826 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 12 [2020-11-28 07:26:04,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:04,826 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2020-11-28 07:26:04,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:26:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2020-11-28 07:26:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:26:04,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:04,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:04,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:26:04,827 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:04,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2027353142, now seen corresponding path program 1 times [2020-11-28 07:26:04,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:04,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877387076] [2020-11-28 07:26:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:04,958 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 07:26:04,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877387076] [2020-11-28 07:26:04,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:04,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:26:04,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076456194] [2020-11-28 07:26:04,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:26:04,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:04,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:26:04,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:26:04,959 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 7 states. [2020-11-28 07:26:05,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:05,268 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-11-28 07:26:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:26:05,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-28 07:26:05,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:05,270 INFO L225 Difference]: With dead ends: 114 [2020-11-28 07:26:05,270 INFO L226 Difference]: Without dead ends: 114 [2020-11-28 07:26:05,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:26:05,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-28 07:26:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-11-28 07:26:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-28 07:26:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-11-28 07:26:05,275 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 12 [2020-11-28 07:26:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:05,275 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-11-28 07:26:05,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:26:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-11-28 07:26:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:26:05,276 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:05,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:05,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:26:05,276 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:05,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:05,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1111716681, now seen corresponding path program 1 times [2020-11-28 07:26:05,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:05,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791894134] [2020-11-28 07:26:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:05,386 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 07:26:05,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791894134] [2020-11-28 07:26:05,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:05,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 07:26:05,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644435628] [2020-11-28 07:26:05,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:26:05,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:05,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:26:05,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:26:05,388 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 9 states. [2020-11-28 07:26:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:05,887 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2020-11-28 07:26:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 07:26:05,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-28 07:26:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:05,888 INFO L225 Difference]: With dead ends: 129 [2020-11-28 07:26:05,888 INFO L226 Difference]: Without dead ends: 129 [2020-11-28 07:26:05,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-11-28 07:26:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-28 07:26:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 111. [2020-11-28 07:26:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-28 07:26:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-11-28 07:26:05,893 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 14 [2020-11-28 07:26:05,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:05,893 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-11-28 07:26:05,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:26:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-11-28 07:26:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:26:05,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:05,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:05,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 07:26:05,895 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:05,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1041046939, now seen corresponding path program 1 times [2020-11-28 07:26:05,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:05,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429153830] [2020-11-28 07:26:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:05,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429153830] [2020-11-28 07:26:05,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:05,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:26:05,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90910468] [2020-11-28 07:26:05,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:26:05,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:05,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:26:05,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:26:05,964 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 4 states. [2020-11-28 07:26:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:06,099 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2020-11-28 07:26:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:26:06,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 07:26:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:06,101 INFO L225 Difference]: With dead ends: 167 [2020-11-28 07:26:06,101 INFO L226 Difference]: Without dead ends: 167 [2020-11-28 07:26:06,101 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 07:26:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-28 07:26:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 108. [2020-11-28 07:26:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-28 07:26:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2020-11-28 07:26:06,104 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 15 [2020-11-28 07:26:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:06,105 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2020-11-28 07:26:06,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:26:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2020-11-28 07:26:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 07:26:06,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:06,106 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] [2020-11-28 07:26:06,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:26:06,106 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:06,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:06,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1533749911, now seen corresponding path program 1 times [2020-11-28 07:26:06,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:06,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598738110] [2020-11-28 07:26:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:06,165 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 07:26:06,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598738110] [2020-11-28 07:26:06,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:06,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:26:06,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319060122] [2020-11-28 07:26:06,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:26:06,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:06,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:26:06,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:26:06,166 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand 5 states. [2020-11-28 07:26:06,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:06,309 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-11-28 07:26:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:26:06,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-28 07:26:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:06,311 INFO L225 Difference]: With dead ends: 105 [2020-11-28 07:26:06,311 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 07:26:06,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:26:06,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 07:26:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-11-28 07:26:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-28 07:26:06,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2020-11-28 07:26:06,319 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 20 [2020-11-28 07:26:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:06,319 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2020-11-28 07:26:06,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:26:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2020-11-28 07:26:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 07:26:06,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:06,320 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] [2020-11-28 07:26:06,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 07:26:06,320 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:06,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1532949525, now seen corresponding path program 1 times [2020-11-28 07:26:06,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:06,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592046277] [2020-11-28 07:26:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:06,600 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 07:26:06,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592046277] [2020-11-28 07:26:06,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:06,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 07:26:06,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054544563] [2020-11-28 07:26:06,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:26:06,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:26:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:26:06,602 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 10 states. [2020-11-28 07:26:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:06,962 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2020-11-28 07:26:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:26:06,962 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-28 07:26:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:06,963 INFO L225 Difference]: With dead ends: 140 [2020-11-28 07:26:06,963 INFO L226 Difference]: Without dead ends: 140 [2020-11-28 07:26:06,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:26:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-28 07:26:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 117. [2020-11-28 07:26:06,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-28 07:26:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2020-11-28 07:26:06,967 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 20 [2020-11-28 07:26:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:06,968 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2020-11-28 07:26:06,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:26:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2020-11-28 07:26:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:26:06,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:06,969 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] [2020-11-28 07:26:06,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 07:26:06,969 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:06,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:06,969 INFO L82 PathProgramCache]: Analyzing trace with hash -301265573, now seen corresponding path program 1 times [2020-11-28 07:26:06,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:06,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177567174] [2020-11-28 07:26:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:07,138 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 07:26:07,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177567174] [2020-11-28 07:26:07,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:07,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 07:26:07,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63257349] [2020-11-28 07:26:07,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:26:07,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:07,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:26:07,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:26:07,140 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand 9 states. [2020-11-28 07:26:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:07,533 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2020-11-28 07:26:07,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:26:07,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-11-28 07:26:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:07,534 INFO L225 Difference]: With dead ends: 142 [2020-11-28 07:26:07,535 INFO L226 Difference]: Without dead ends: 142 [2020-11-28 07:26:07,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:26:07,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-28 07:26:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 122. [2020-11-28 07:26:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 07:26:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2020-11-28 07:26:07,539 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 21 [2020-11-28 07:26:07,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:07,540 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2020-11-28 07:26:07,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:26:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2020-11-28 07:26:07,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:26:07,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:07,541 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] [2020-11-28 07:26:07,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 07:26:07,541 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:07,542 INFO L82 PathProgramCache]: Analyzing trace with hash -301265572, now seen corresponding path program 1 times [2020-11-28 07:26:07,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:07,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445238299] [2020-11-28 07:26:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:07,668 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 07:26:07,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445238299] [2020-11-28 07:26:07,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:07,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 07:26:07,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142996571] [2020-11-28 07:26:07,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:26:07,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:07,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:26:07,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:26:07,670 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 9 states. [2020-11-28 07:26:07,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:07,959 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2020-11-28 07:26:07,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:26:07,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-11-28 07:26:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:07,961 INFO L225 Difference]: With dead ends: 147 [2020-11-28 07:26:07,961 INFO L226 Difference]: Without dead ends: 147 [2020-11-28 07:26:07,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:26:07,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-28 07:26:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 122. [2020-11-28 07:26:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 07:26:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-11-28 07:26:07,966 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 21 [2020-11-28 07:26:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:07,966 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-11-28 07:26:07,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:26:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-11-28 07:26:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:26:07,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:07,968 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 07:26:07,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 07:26:07,968 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr52REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-28 07:26:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:07,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1479131374, now seen corresponding path program 1 times [2020-11-28 07:26:07,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:07,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897091569] [2020-11-28 07:26:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:26:07,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:26:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:26:08,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:26:08,063 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:26:08,063 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:26:08,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 07:26:08,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:26:08 BoogieIcfgContainer [2020-11-28 07:26:08,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:26:08,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:26:08,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:26:08,097 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:26:08,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:00" (3/4) ... [2020-11-28 07:26:08,099 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:26:08,140 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6e313163-9a3e-43a6-bd68-d128f83a9835/bin/utaipan/witness.graphml [2020-11-28 07:26:08,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:26:08,143 INFO L168 Benchmark]: Toolchain (without parser) took 9604.71 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 90.3 MB in the beginning and 81.8 MB in the end (delta: 8.5 MB). Peak memory consumption was 98.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:08,148 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 42.9 MB in the beginning and 42.8 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:26:08,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.87 ms. Allocated memory is still 121.6 MB. Free memory was 90.0 MB in the beginning and 88.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:08,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.06 ms. Allocated memory is still 121.6 MB. Free memory was 88.3 MB in the beginning and 86.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:08,149 INFO L168 Benchmark]: Boogie Preprocessor took 51.66 ms. Allocated memory is still 121.6 MB. Free memory was 86.2 MB in the beginning and 84.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:08,150 INFO L168 Benchmark]: RCFGBuilder took 872.03 ms. Allocated memory is still 121.6 MB. Free memory was 84.1 MB in the beginning and 76.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:08,154 INFO L168 Benchmark]: TraceAbstraction took 8018.71 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 76.1 MB in the beginning and 83.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 81.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:08,155 INFO L168 Benchmark]: Witness Printer took 44.62 ms. Allocated memory is still 211.8 MB. Free memory was 83.9 MB in the beginning and 81.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:08,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 42.9 MB in the beginning and 42.8 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 553.87 ms. Allocated memory is still 121.6 MB. Free memory was 90.0 MB in the beginning and 88.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.06 ms. Allocated memory is still 121.6 MB. Free memory was 88.3 MB in the beginning and 86.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.66 ms. Allocated memory is still 121.6 MB. Free memory was 86.2 MB in the beginning and 84.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 872.03 ms. Allocated memory is still 121.6 MB. Free memory was 84.1 MB in the beginning and 76.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8018.71 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 76.1 MB in the beginning and 83.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 81.5 MB. Max. memory is 16.1 GB. * Witness Printer took 44.62 ms. Allocated memory is still 211.8 MB. Free memory was 83.9 MB in the beginning and 81.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data [L1037] COND TRUE !(2 != x->data) [L992] COND FALSE !(0) [L992] __assert_fail ("0", "dll-token-2.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 135 locations, 64 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.9s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1328 SDtfs, 2035 SDslu, 2596 SDs, 0 SdLazy, 3550 SolverSat, 262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 471 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 21708 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 incorrect! Received shutdown request...