./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0233d496bfaf5cb1311bfa260a57f41458184795 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:54:03,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:54:03,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:54:03,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:54:03,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:54:03,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:54:03,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:54:03,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:54:03,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:54:03,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:54:03,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:54:03,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:54:03,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:54:03,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:54:03,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:54:03,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:54:03,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:54:03,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:54:03,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:54:03,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:54:03,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:54:03,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:54:03,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:54:03,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:54:03,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:54:03,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:54:03,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:54:03,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:54:03,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:54:03,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:54:03,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:54:03,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:54:03,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:54:03,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:54:03,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:54:03,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:54:03,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:54:03,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:54:03,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:54:04,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:54:04,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:54:04,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2020-11-30 01:54:04,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:54:04,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:54:04,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:54:04,053 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:54:04,053 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:54:04,053 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:54:04,053 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:54:04,054 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:54:04,054 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:54:04,054 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:54:04,054 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:54:04,054 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:54:04,055 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:54:04,055 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:54:04,055 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:54:04,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:54:04,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:54:04,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:54:04,057 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:54:04,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:54:04,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:54:04,058 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 01:54:04,058 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 01:54:04,058 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 01:54:04,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:54:04,058 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:54:04,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:54:04,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:54:04,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:54:04,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:54:04,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:54:04,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:54:04,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:54:04,060 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:54:04,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:54:04,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:54:04,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:54:04,061 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_91cef400-d38c-4a6b-b476-5bf642484dbb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0233d496bfaf5cb1311bfa260a57f41458184795 [2020-11-30 01:54:04,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:54:04,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:54:04,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:54:04,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:54:04,414 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:54:04,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c [2020-11-30 01:54:04,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/data/f214898a0/c117442890874ca3a244946b1de7bed7/FLAG20890ea2e [2020-11-30 01:54:05,093 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:54:05,094 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/sv-benchmarks/c/termination-crafted/4BitCounterPointer.c [2020-11-30 01:54:05,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/data/f214898a0/c117442890874ca3a244946b1de7bed7/FLAG20890ea2e [2020-11-30 01:54:05,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/data/f214898a0/c117442890874ca3a244946b1de7bed7 [2020-11-30 01:54:05,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:54:05,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:54:05,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:54:05,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:54:05,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:54:05,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439b8994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05, skipping insertion in model container [2020-11-30 01:54:05,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:54:05,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:54:05,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:54:05,695 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:54:05,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:54:05,727 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:54:05,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05 WrapperNode [2020-11-30 01:54:05,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:54:05,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:54:05,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:54:05,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:54:05,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:54:05,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:54:05,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:54:05,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:54:05,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... [2020-11-30 01:54:05,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:54:05,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:54:05,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:54:05,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:54:05,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:54:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:54:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:54:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:54:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:54:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:54:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:54:06,542 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:54:06,542 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 01:54:06,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:54:06 BoogieIcfgContainer [2020-11-30 01:54:06,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:54:06,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:54:06,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:54:06,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:54:06,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:54:05" (1/3) ... [2020-11-30 01:54:06,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d31e2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:54:06, skipping insertion in model container [2020-11-30 01:54:06,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:05" (2/3) ... [2020-11-30 01:54:06,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d31e2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:54:06, skipping insertion in model container [2020-11-30 01:54:06,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:54:06" (3/3) ... [2020-11-30 01:54:06,564 INFO L111 eAbstractionObserver]: Analyzing ICFG 4BitCounterPointer.c [2020-11-30 01:54:06,582 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:54:06,587 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2020-11-30 01:54:06,600 INFO L253 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2020-11-30 01:54:06,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:54:06,625 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 01:54:06,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:54:06,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:54:06,626 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:54:06,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:54:06,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:54:06,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:54:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-30 01:54:06,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-30 01:54:06,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:06,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-30 01:54:06,652 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:06,659 INFO L82 PathProgramCache]: Analyzing trace with hash 3476, now seen corresponding path program 1 times [2020-11-30 01:54:06,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:06,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697117062] [2020-11-30 01:54:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:06,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697117062] [2020-11-30 01:54:06,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:06,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:06,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858098003] [2020-11-30 01:54:06,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:06,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:06,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:06,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:06,926 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-11-30 01:54:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:07,074 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-11-30 01:54:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:07,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-30 01:54:07,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:07,089 INFO L225 Difference]: With dead ends: 50 [2020-11-30 01:54:07,090 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 01:54:07,093 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 [2020-11-30 01:54:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 01:54:07,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-30 01:54:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-30 01:54:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-11-30 01:54:07,151 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 2 [2020-11-30 01:54:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:07,152 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-11-30 01:54:07,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-11-30 01:54:07,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-30 01:54:07,152 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:07,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-30 01:54:07,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:54:07,153 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 3477, now seen corresponding path program 1 times [2020-11-30 01:54:07,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:07,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694385821] [2020-11-30 01:54:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:07,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694385821] [2020-11-30 01:54:07,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:07,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:07,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286724349] [2020-11-30 01:54:07,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:07,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:07,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:07,235 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 3 states. [2020-11-30 01:54:07,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:07,354 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-11-30 01:54:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:07,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-30 01:54:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:07,356 INFO L225 Difference]: With dead ends: 45 [2020-11-30 01:54:07,357 INFO L226 Difference]: Without dead ends: 45 [2020-11-30 01:54:07,358 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 [2020-11-30 01:54:07,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-30 01:54:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-30 01:54:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 01:54:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-30 01:54:07,373 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 2 [2020-11-30 01:54:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:07,374 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-30 01:54:07,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-30 01:54:07,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 01:54:07,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:07,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 01:54:07,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:54:07,376 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:07,380 INFO L82 PathProgramCache]: Analyzing trace with hash 107732, now seen corresponding path program 1 times [2020-11-30 01:54:07,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:07,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334244684] [2020-11-30 01:54:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:07,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334244684] [2020-11-30 01:54:07,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:07,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:07,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474520673] [2020-11-30 01:54:07,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:07,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:07,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:07,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:07,454 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 3 states. [2020-11-30 01:54:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:07,545 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-11-30 01:54:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:07,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-30 01:54:07,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:07,548 INFO L225 Difference]: With dead ends: 41 [2020-11-30 01:54:07,548 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 01:54:07,549 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 [2020-11-30 01:54:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 01:54:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-30 01:54:07,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 01:54:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-11-30 01:54:07,555 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 3 [2020-11-30 01:54:07,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:07,559 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-11-30 01:54:07,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-11-30 01:54:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 01:54:07,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:07,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 01:54:07,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:54:07,563 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:07,566 INFO L82 PathProgramCache]: Analyzing trace with hash 107733, now seen corresponding path program 1 times [2020-11-30 01:54:07,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:07,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424081781] [2020-11-30 01:54:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:07,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424081781] [2020-11-30 01:54:07,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:07,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:07,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312907537] [2020-11-30 01:54:07,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:07,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:07,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:07,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:07,652 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 3 states. [2020-11-30 01:54:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:07,718 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-11-30 01:54:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:07,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-30 01:54:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:07,720 INFO L225 Difference]: With dead ends: 37 [2020-11-30 01:54:07,720 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:54:07,720 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 [2020-11-30 01:54:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:54:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-30 01:54:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 01:54:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-30 01:54:07,726 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 3 [2020-11-30 01:54:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:07,726 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-30 01:54:07,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-30 01:54:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 01:54:07,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:07,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 01:54:07,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:54:07,728 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:07,729 INFO L82 PathProgramCache]: Analyzing trace with hash 3339671, now seen corresponding path program 1 times [2020-11-30 01:54:07,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:07,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234491937] [2020-11-30 01:54:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:07,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234491937] [2020-11-30 01:54:07,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:07,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:07,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526475617] [2020-11-30 01:54:07,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:07,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:07,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:07,771 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 3 states. [2020-11-30 01:54:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:07,845 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-30 01:54:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:07,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 01:54:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:07,846 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:54:07,847 INFO L226 Difference]: Without dead ends: 33 [2020-11-30 01:54:07,847 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 [2020-11-30 01:54:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-30 01:54:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-30 01:54:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 01:54:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-30 01:54:07,851 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 4 [2020-11-30 01:54:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:07,852 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-30 01:54:07,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-30 01:54:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 01:54:07,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:07,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 01:54:07,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:54:07,853 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:07,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:07,853 INFO L82 PathProgramCache]: Analyzing trace with hash 3339672, now seen corresponding path program 1 times [2020-11-30 01:54:07,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:07,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637684348] [2020-11-30 01:54:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:07,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637684348] [2020-11-30 01:54:07,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:07,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:07,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012568999] [2020-11-30 01:54:07,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:07,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:07,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:07,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:07,917 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2020-11-30 01:54:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:07,963 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-30 01:54:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:07,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 01:54:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:07,965 INFO L225 Difference]: With dead ends: 29 [2020-11-30 01:54:07,965 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 01:54:07,965 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 [2020-11-30 01:54:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 01:54:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 01:54:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 01:54:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-11-30 01:54:07,969 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 4 [2020-11-30 01:54:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:07,969 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-11-30 01:54:07,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-11-30 01:54:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:54:07,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:07,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:54:07,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:54:07,970 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash 103529783, now seen corresponding path program 1 times [2020-11-30 01:54:07,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:07,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247066276] [2020-11-30 01:54:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:08,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247066276] [2020-11-30 01:54:08,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:08,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:08,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131250082] [2020-11-30 01:54:08,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:08,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:08,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:08,049 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 3 states. [2020-11-30 01:54:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:08,100 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-11-30 01:54:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:08,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 01:54:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:08,102 INFO L225 Difference]: With dead ends: 26 [2020-11-30 01:54:08,102 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 01:54:08,102 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 [2020-11-30 01:54:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 01:54:08,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 01:54:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:54:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-11-30 01:54:08,105 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 5 [2020-11-30 01:54:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:08,106 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-11-30 01:54:08,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-11-30 01:54:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:54:08,106 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:08,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:54:08,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:54:08,110 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:08,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:08,111 INFO L82 PathProgramCache]: Analyzing trace with hash 103529784, now seen corresponding path program 1 times [2020-11-30 01:54:08,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:08,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661905757] [2020-11-30 01:54:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:08,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661905757] [2020-11-30 01:54:08,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:08,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:08,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913872735] [2020-11-30 01:54:08,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:08,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:08,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:08,188 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 3 states. [2020-11-30 01:54:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:08,227 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-30 01:54:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:08,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 01:54:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:08,229 INFO L225 Difference]: With dead ends: 23 [2020-11-30 01:54:08,229 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 01:54:08,229 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 [2020-11-30 01:54:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 01:54:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 01:54:08,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:54:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-30 01:54:08,232 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 5 [2020-11-30 01:54:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:08,232 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-30 01:54:08,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-30 01:54:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:54:08,233 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:08,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:54:08,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:54:08,233 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:08,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1661417693, now seen corresponding path program 1 times [2020-11-30 01:54:08,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:08,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290837009] [2020-11-30 01:54:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:08,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290837009] [2020-11-30 01:54:08,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:08,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:54:08,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152959450] [2020-11-30 01:54:08,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:54:08,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:08,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:54:08,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:54:08,287 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-11-30 01:54:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:08,407 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-30 01:54:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:54:08,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 01:54:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:08,410 INFO L225 Difference]: With dead ends: 38 [2020-11-30 01:54:08,410 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 01:54:08,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:54:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 01:54:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2020-11-30 01:54:08,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 01:54:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-30 01:54:08,423 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 9 [2020-11-30 01:54:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:08,423 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-30 01:54:08,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:54:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-30 01:54:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:54:08,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:08,431 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:54:08,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:54:08,431 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:08,432 INFO L82 PathProgramCache]: Analyzing trace with hash -723063482, now seen corresponding path program 1 times [2020-11-30 01:54:08,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:08,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862978569] [2020-11-30 01:54:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:08,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862978569] [2020-11-30 01:54:08,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192559740] [2020-11-30 01:54:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:54:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:08,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 01:54:08,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:54:08,850 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:54:08,851 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 85 [2020-11-30 01:54:08,859 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:54:08,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:54:08,888 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:54:08,888 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:4 [2020-11-30 01:54:08,900 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 01:54:08,900 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:54:08,912 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:54:08,912 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:54:08,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:12 [2020-11-30 01:54:08,938 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-11-30 01:54:08,939 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:54:08,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:54:08,953 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-30 01:54:08,953 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2020-11-30 01:54:09,014 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-11-30 01:54:09,015 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:54:09,025 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:54:09,027 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:54:09,028 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2020-11-30 01:54:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:09,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:54:11,049 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-11-30 01:54:11,075 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:54:11,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:54:11,085 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:54:11,085 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:4 [2020-11-30 01:54:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:11,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [460643639] [2020-11-30 01:54:11,129 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-11-30 01:54:11,130 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:54:11,136 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:54:11,144 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:54:11,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:54:12,326 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:54:12,680 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-11-30 01:54:13,124 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-11-30 01:54:13,497 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2020-11-30 01:54:13,929 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-11-30 01:54:15,184 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 142 DAG size of output: 87 [2020-11-30 01:54:16,424 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 144 DAG size of output: 89 [2020-11-30 01:54:17,647 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 144 DAG size of output: 91 [2020-11-30 01:54:18,338 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 86 [2020-11-30 01:54:18,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:54:18,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5, 5] total 15 [2020-11-30 01:54:18,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200029337] [2020-11-30 01:54:18,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:54:18,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:18,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:54:18,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=165, Unknown=4, NotChecked=0, Total=240 [2020-11-30 01:54:18,341 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 10 states. [2020-11-30 01:54:19,031 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:54:19,529 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-11-30 01:54:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:19,925 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-11-30 01:54:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:54:19,926 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-30 01:54:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:19,927 INFO L225 Difference]: With dead ends: 75 [2020-11-30 01:54:19,927 INFO L226 Difference]: Without dead ends: 75 [2020-11-30 01:54:19,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=98, Invalid=204, Unknown=4, NotChecked=0, Total=306 [2020-11-30 01:54:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-30 01:54:19,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 32. [2020-11-30 01:54:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 01:54:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-30 01:54:19,933 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-11-30 01:54:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:19,933 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-30 01:54:19,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:54:19,933 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-30 01:54:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:54:19,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:19,934 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:54:20,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 01:54:20,140 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:20,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1385146651, now seen corresponding path program 1 times [2020-11-30 01:54:20,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:20,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772817019] [2020-11-30 01:54:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:20,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772817019] [2020-11-30 01:54:20,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646165281] [2020-11-30 01:54:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:54:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:20,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 01:54:20,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:54:20,631 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-30 01:54:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:23,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:54:26,536 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-11-30 01:54:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:41,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [34145608] [2020-11-30 01:54:41,355 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2020-11-30 01:54:41,355 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:54:41,356 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:54:41,356 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:54:41,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:54:42,714 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 01:54:42,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:54:42,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2020-11-30 01:54:42,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448973727] [2020-11-30 01:54:42,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 01:54:42,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:42,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 01:54:42,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=149, Unknown=24, NotChecked=0, Total=240 [2020-11-30 01:54:42,718 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 16 states. [2020-11-30 01:54:51,020 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-30 01:54:52,309 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-30 01:54:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:53,866 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-11-30 01:54:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:54:53,867 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-11-30 01:54:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:53,868 INFO L225 Difference]: With dead ends: 54 [2020-11-30 01:54:53,868 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 01:54:53,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=141, Invalid=250, Unknown=29, NotChecked=0, Total=420 [2020-11-30 01:54:53,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 01:54:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2020-11-30 01:54:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 01:54:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-11-30 01:54:53,882 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 22 [2020-11-30 01:54:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:53,884 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-30 01:54:53,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 01:54:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-11-30 01:54:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:54:53,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:53,886 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:54:54,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:54:54,104 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:54:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:54,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1435305227, now seen corresponding path program 1 times [2020-11-30 01:54:54,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:54,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938650010] [2020-11-30 01:54:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:54,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938650010] [2020-11-30 01:54:54,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740103852] [2020-11-30 01:54:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:54:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:54,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:54:54,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:54:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:55,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:54:55,760 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x0~0.offset Int)) (= (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~x0~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x0~0.base) ULTIMATE.start_main_~x0~0.offset 0)) c_ULTIMATE.start_main_~x1~0.base) c_ULTIMATE.start_main_~x1~0.offset) 0)) is different from false [2020-11-30 01:54:57,561 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x0~0.offset Int) (ULTIMATE.start_main_~x3~0.offset Int) (ULTIMATE.start_main_~x3~0.base Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| ULTIMATE.start_main_~x3~0.base (store (select |c_#memory_int| ULTIMATE.start_main_~x3~0.base) ULTIMATE.start_main_~x3~0.offset 0)))) (store .cse0 c_ULTIMATE.start_main_~x0~0.base (store (select .cse0 c_ULTIMATE.start_main_~x0~0.base) ULTIMATE.start_main_~x0~0.offset 0))) c_ULTIMATE.start_main_~x1~0.base) c_ULTIMATE.start_main_~x1~0.offset) 0)) is different from false [2020-11-30 01:54:59,575 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x0~0.offset Int) (ULTIMATE.start_main_~x2~0.offset Int) (ULTIMATE.start_main_~x3~0.offset Int) (ULTIMATE.start_main_~x3~0.base Int)) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~x2~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x2~0.base) ULTIMATE.start_main_~x2~0.offset 0)))) (store .cse1 ULTIMATE.start_main_~x3~0.base (store (select .cse1 ULTIMATE.start_main_~x3~0.base) ULTIMATE.start_main_~x3~0.offset 0))))) (store .cse0 c_ULTIMATE.start_main_~x0~0.base (store (select .cse0 c_ULTIMATE.start_main_~x0~0.base) ULTIMATE.start_main_~x0~0.offset 0))) c_ULTIMATE.start_main_~x1~0.base) c_ULTIMATE.start_main_~x1~0.offset) 0)) is different from false [2020-11-30 01:54:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2020-11-30 01:54:59,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:54:59,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 19 [2020-11-30 01:54:59,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981575253] [2020-11-30 01:54:59,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:54:59,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:59,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:54:59,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=178, Unknown=3, NotChecked=90, Total=342 [2020-11-30 01:54:59,612 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 8 states. [2020-11-30 01:55:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:55:12,004 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2020-11-30 01:55:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:55:12,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-30 01:55:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:55:12,005 INFO L225 Difference]: With dead ends: 58 [2020-11-30 01:55:12,005 INFO L226 Difference]: Without dead ends: 58 [2020-11-30 01:55:12,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=130, Invalid=299, Unknown=3, NotChecked=120, Total=552 [2020-11-30 01:55:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-30 01:55:12,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-11-30 01:55:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 01:55:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-11-30 01:55:12,014 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 25 [2020-11-30 01:55:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:55:12,014 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-11-30 01:55:12,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:55:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-11-30 01:55:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:55:12,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:55:12,016 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:55:12,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:55:12,231 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:55:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:55:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1769996822, now seen corresponding path program 1 times [2020-11-30 01:55:12,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:55:12,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25659686] [2020-11-30 01:55:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:55:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:55:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:55:12,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25659686] [2020-11-30 01:55:12,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684897089] [2020-11-30 01:55:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:55:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:55:12,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:55:12,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:55:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 01:55:12,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:55:13,511 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x1~0.offset Int)) (= (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~x1~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x1~0.base) ULTIMATE.start_main_~x1~0.offset 1)) c_ULTIMATE.start_main_~x0~0.base) c_ULTIMATE.start_main_~x0~0.offset) 0)) is different from false [2020-11-30 01:55:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 01:55:13,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [673812644] [2020-11-30 01:55:13,558 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2020-11-30 01:55:13,558 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:55:13,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:55:13,559 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:55:13,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:55:14,784 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 01:55:14,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:55:14,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 9 [2020-11-30 01:55:14,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766937720] [2020-11-30 01:55:14,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:55:14,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:55:14,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:55:14,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=48, Unknown=1, NotChecked=14, Total=90 [2020-11-30 01:55:14,787 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 10 states. [2020-11-30 01:55:14,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:55:14,981 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-11-30 01:55:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:55:14,982 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-11-30 01:55:14,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:55:14,983 INFO L225 Difference]: With dead ends: 66 [2020-11-30 01:55:14,983 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 01:55:14,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=81, Unknown=1, NotChecked=20, Total=156 [2020-11-30 01:55:14,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 01:55:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-11-30 01:55:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-30 01:55:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2020-11-30 01:55:14,988 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 33 [2020-11-30 01:55:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:55:14,989 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2020-11-30 01:55:14,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:55:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2020-11-30 01:55:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 01:55:14,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:55:14,990 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:55:15,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:55:15,207 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 01:55:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:55:15,208 INFO L82 PathProgramCache]: Analyzing trace with hash 257505609, now seen corresponding path program 2 times [2020-11-30 01:55:15,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:55:15,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734656031] [2020-11-30 01:55:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:55:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:55:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 01:55:15,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734656031] [2020-11-30 01:55:15,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127391024] [2020-11-30 01:55:15,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:55:15,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-11-30 01:55:15,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:55:15,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 01:55:15,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:55:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 01:55:15,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:55:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 01:55:15,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:55:15,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [9] total 13 [2020-11-30 01:55:15,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423385000] [2020-11-30 01:55:15,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:55:15,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:55:15,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:55:15,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:55:15,878 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 6 states. [2020-11-30 01:55:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:55:16,055 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-11-30 01:55:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:55:16,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-11-30 01:55:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:55:16,057 INFO L225 Difference]: With dead ends: 59 [2020-11-30 01:55:16,057 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:55:16,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:55:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:55:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:55:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:55:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:55:16,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-11-30 01:55:16,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:55:16,058 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:55:16,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:55:16,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:55:16,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:55:16,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:55:16,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:55:16 BoogieIcfgContainer [2020-11-30 01:55:16,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:55:16,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:55:16,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:55:16,264 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:55:16,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:54:06" (3/4) ... [2020-11-30 01:55:16,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:55:16,278 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 01:55:16,278 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 01:55:16,278 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 01:55:16,334 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_91cef400-d38c-4a6b-b476-5bf642484dbb/bin/utaipan/witness.graphml [2020-11-30 01:55:16,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:55:16,336 INFO L168 Benchmark]: Toolchain (without parser) took 70895.78 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 65.8 MB in the beginning and 133.7 MB in the end (delta: -68.0 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:55:16,336 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 73.4 MB. Free memory was 48.9 MB in the beginning and 48.9 MB in the end (delta: 26.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:55:16,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.91 ms. Allocated memory is still 98.6 MB. Free memory was 65.5 MB in the beginning and 77.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:55:16,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.46 ms. Allocated memory is still 98.6 MB. Free memory was 77.4 MB in the beginning and 76.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:55:16,338 INFO L168 Benchmark]: Boogie Preprocessor took 26.69 ms. Allocated memory is still 98.6 MB. Free memory was 76.3 MB in the beginning and 75.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:55:16,338 INFO L168 Benchmark]: RCFGBuilder took 744.81 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 53.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:55:16,342 INFO L168 Benchmark]: TraceAbstraction took 69716.28 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 52.9 MB in the beginning and 136.4 MB in the end (delta: -83.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:55:16,343 INFO L168 Benchmark]: Witness Printer took 70.66 ms. Allocated memory is still 174.1 MB. Free memory was 136.4 MB in the beginning and 133.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:55:16,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 73.4 MB. Free memory was 48.9 MB in the beginning and 48.9 MB in the end (delta: 26.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.91 ms. Allocated memory is still 98.6 MB. Free memory was 65.5 MB in the beginning and 77.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.46 ms. Allocated memory is still 98.6 MB. Free memory was 77.4 MB in the beginning and 76.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.69 ms. Allocated memory is still 98.6 MB. Free memory was 76.3 MB in the beginning and 75.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 744.81 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 53.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 69716.28 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 52.9 MB in the beginning and 136.4 MB in the end (delta: -83.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.66 ms. Allocated memory is still 174.1 MB. Free memory was 136.4 MB in the beginning and 133.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 24]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 24]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 31 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 31 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 69.6s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 26.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 546 SDslu, 229 SDs, 0 SdLazy, 693 SolverSat, 183 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 19.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 41.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=13, 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, 14 MinimizatonAttempts, 86 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 31.2s InterpolantComputationTime, 301 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 409 ConstructedInterpolants, 49 QuantifiedInterpolants, 195445 SizeOfPredicates, 65 NumberOfNonLiveVariables, 645 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 153/225 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: OVERALL_TIME[ms]: 1197, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 20, TOOLS_POST_TIME[ms]: 811, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 20, TOOLS_QUANTIFIERELIM_TIME[ms]: 800, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 169, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 36, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 214, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 76, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 484, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 472, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 25, DAG_COMPRESSION_PROCESSED_NODES: 102, DAG_COMPRESSION_RETAINED_NODES: 36, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...