./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI --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 32bit --witnessprinter.graph.data.programhash 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:42,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:42,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:42,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:42,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:42,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:42,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:42,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:42,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:42,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:42,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:42,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:42,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:42,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:42,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:42,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:42,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:42,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:42,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:42,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:42,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:42,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:42,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:42,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:42,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:42,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:42,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:42,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:42,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:42,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:42,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:42,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:42,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:42,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:42,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:42,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:42,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:42,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:42,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:42,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:42,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:42,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:32:42,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:42,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:42,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:42,460 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:42,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:42,461 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:42,461 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:42,461 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:42,462 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:42,462 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:42,463 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:42,463 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:42,464 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:42,464 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:42,464 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:42,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:32:42,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:32:42,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:42,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:42,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:32:42,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:42,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:42,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:42,467 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:32:42,467 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:32:42,468 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:32:42,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:42,470 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:42,470 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:42,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:42,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:42,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:42,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:42,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:42,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:42,472 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:42,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:42,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:42,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:42,473 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_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 [2021-10-11 02:32:42,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:42,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:42,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:42,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:42,860 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:42,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2021-10-11 02:32:42,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/data/601f2dc29/5a37a3949ce1430e9d5c11d603c508fd/FLAG04a79792d [2021-10-11 02:32:43,410 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:43,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2021-10-11 02:32:43,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/data/601f2dc29/5a37a3949ce1430e9d5c11d603c508fd/FLAG04a79792d [2021-10-11 02:32:43,780 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/data/601f2dc29/5a37a3949ce1430e9d5c11d603c508fd [2021-10-11 02:32:43,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:43,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:43,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:43,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:43,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:43,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9f9fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43, skipping insertion in model container [2021-10-11 02:32:43,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:43,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:44,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:44,013 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:44,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:44,048 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:44,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44 WrapperNode [2021-10-11 02:32:44,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:44,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:44,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:44,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:44,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:44,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:44,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:44,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:44,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... [2021-10-11 02:32:44,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:44,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:44,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:44,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:44,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:32:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:32:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:32:44,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:44,839 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-11 02:32:44,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:44 BoogieIcfgContainer [2021-10-11 02:32:44,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:44,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:44,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:44,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:44,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:43" (1/3) ... [2021-10-11 02:32:44,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7691fb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:44, skipping insertion in model container [2021-10-11 02:32:44,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:44" (2/3) ... [2021-10-11 02:32:44,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7691fb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:44, skipping insertion in model container [2021-10-11 02:32:44,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:44" (3/3) ... [2021-10-11 02:32:44,852 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2021-10-11 02:32:44,868 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:44,872 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 02:32:44,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 02:32:44,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:44,910 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:32:44,911 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:44,911 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:44,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:44,912 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:44,912 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:44,912 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 02:32:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:32:44,940 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:44,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:32:44,942 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:44,950 INFO L82 PathProgramCache]: Analyzing trace with hash 3118125, now seen corresponding path program 1 times [2021-10-11 02:32:44,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:44,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571465807] [2021-10-11 02:32:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:45,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571465807] [2021-10-11 02:32:45,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:45,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:45,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935616586] [2021-10-11 02:32:45,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:45,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:45,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:45,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:45,177 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2021-10-11 02:32:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:45,245 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-10-11 02:32:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:45,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:32:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:45,262 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:32:45,263 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:32:45,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:32:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2021-10-11 02:32:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:32:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-11 02:32:45,319 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2021-10-11 02:32:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:45,320 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-11 02:32:45,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-11 02:32:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:32:45,321 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:45,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:32:45,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:45,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:45,326 INFO L82 PathProgramCache]: Analyzing trace with hash 3048869, now seen corresponding path program 1 times [2021-10-11 02:32:45,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:45,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396601582] [2021-10-11 02:32:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:45,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396601582] [2021-10-11 02:32:45,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:45,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:45,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777922488] [2021-10-11 02:32:45,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:45,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:45,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:45,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:45,415 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2021-10-11 02:32:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:45,467 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2021-10-11 02:32:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:45,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:32:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:45,469 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:32:45,469 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:32:45,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:32:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2021-10-11 02:32:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:32:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-11 02:32:45,475 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2021-10-11 02:32:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:45,475 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-11 02:32:45,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-11 02:32:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:32:45,476 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:45,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:32:45,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:45,477 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:45,478 INFO L82 PathProgramCache]: Analyzing trace with hash 3050899, now seen corresponding path program 1 times [2021-10-11 02:32:45,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:45,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451005591] [2021-10-11 02:32:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:45,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451005591] [2021-10-11 02:32:45,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:45,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:45,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293820904] [2021-10-11 02:32:45,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:45,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:45,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:45,525 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2021-10-11 02:32:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:45,544 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-11 02:32:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:45,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:32:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:45,546 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:32:45,546 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:32:45,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:32:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-10-11 02:32:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:32:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-11 02:32:45,550 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2021-10-11 02:32:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:45,551 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-11 02:32:45,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:45,551 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-11 02:32:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:32:45,552 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:45,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:32:45,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:32:45,552 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:45,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:45,553 INFO L82 PathProgramCache]: Analyzing trace with hash 94514992, now seen corresponding path program 1 times [2021-10-11 02:32:45,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:45,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716021686] [2021-10-11 02:32:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:45,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716021686] [2021-10-11 02:32:45,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:45,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:45,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383550296] [2021-10-11 02:32:45,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:45,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:45,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:45,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:45,602 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2021-10-11 02:32:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:45,658 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-11 02:32:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:45,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:32:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:45,660 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:32:45,661 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:32:45,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:32:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:32:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:32:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-10-11 02:32:45,668 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2021-10-11 02:32:45,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:45,668 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-10-11 02:32:45,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-10-11 02:32:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:32:45,669 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:45,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:32:45,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:32:45,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:45,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:45,672 INFO L82 PathProgramCache]: Analyzing trace with hash 94514993, now seen corresponding path program 1 times [2021-10-11 02:32:45,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:45,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918902322] [2021-10-11 02:32:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:45,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918902322] [2021-10-11 02:32:45,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:45,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:45,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471525000] [2021-10-11 02:32:45,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:45,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:45,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:45,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:45,761 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 4 states. [2021-10-11 02:32:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:45,830 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-11 02:32:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:45,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:32:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:45,833 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:32:45,833 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 02:32:45,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 02:32:45,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-11 02:32:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:32:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-11 02:32:45,842 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 5 [2021-10-11 02:32:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:45,843 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-11 02:32:45,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-11 02:32:45,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:32:45,844 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:45,844 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:32:45,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:32:45,845 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:45,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:45,846 INFO L82 PathProgramCache]: Analyzing trace with hash 634647528, now seen corresponding path program 1 times [2021-10-11 02:32:45,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:45,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119981417] [2021-10-11 02:32:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:45,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119981417] [2021-10-11 02:32:45,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738166961] [2021-10-11 02:32:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:45,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:32:45,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:46,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:46,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1318267381] [2021-10-11 02:32:46,072 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:32:46,072 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:46,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:46,083 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:46,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:46,977 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:47,260 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-10-11 02:32:47,435 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-10-11 02:32:47,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:47,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 8 [2021-10-11 02:32:47,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630846687] [2021-10-11 02:32:47,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:47,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:47,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:47,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:47,463 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2021-10-11 02:32:47,679 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-10-11 02:32:47,889 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-10-11 02:32:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:47,977 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-10-11 02:32:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:47,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-10-11 02:32:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:47,979 INFO L225 Difference]: With dead ends: 30 [2021-10-11 02:32:47,979 INFO L226 Difference]: Without dead ends: 30 [2021-10-11 02:32:47,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:32:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-11 02:32:47,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-10-11 02:32:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:32:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-10-11 02:32:47,983 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2021-10-11 02:32:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:47,983 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-10-11 02:32:47,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-10-11 02:32:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:47,984 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:47,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-10-11 02:32:48,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 02:32:48,198 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:48,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:48,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1800763058, now seen corresponding path program 1 times [2021-10-11 02:32:48,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:48,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967442674] [2021-10-11 02:32:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:48,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967442674] [2021-10-11 02:32:48,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:48,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:48,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930156832] [2021-10-11 02:32:48,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:48,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:48,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:48,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:48,258 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2021-10-11 02:32:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:48,319 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-10-11 02:32:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:32:48,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:32:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:48,321 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:32:48,321 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:32:48,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:48,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:32:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-11 02:32:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:32:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-11 02:32:48,325 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8 [2021-10-11 02:32:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:48,326 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-11 02:32:48,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-10-11 02:32:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:48,327 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:48,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:48,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-11 02:32:48,327 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash 400365424, now seen corresponding path program 1 times [2021-10-11 02:32:48,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:48,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555201364] [2021-10-11 02:32:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:48,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555201364] [2021-10-11 02:32:48,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756842179] [2021-10-11 02:32:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:48,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:48,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:48,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:48,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:48,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 5 [2021-10-11 02:32:48,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205812532] [2021-10-11 02:32:48,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:48,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:48,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:48,495 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2021-10-11 02:32:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:48,519 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2021-10-11 02:32:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:48,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 02:32:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:48,520 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:32:48,521 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:32:48,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:32:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:32:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:32:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-11 02:32:48,525 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2021-10-11 02:32:48,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:48,525 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-11 02:32:48,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-10-11 02:32:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:48,526 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:48,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:48,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:48,754 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:48,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:48,754 INFO L82 PathProgramCache]: Analyzing trace with hash 400365425, now seen corresponding path program 1 times [2021-10-11 02:32:48,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:48,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281087531] [2021-10-11 02:32:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:48,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281087531] [2021-10-11 02:32:48,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477374010] [2021-10-11 02:32:48,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:48,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:32:48,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:48,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:48,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [49030362] [2021-10-11 02:32:48,980 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:32:48,980 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:48,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:48,981 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:48,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:49,067 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:49,266 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:49,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:50,078 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:50,732 WARN L197 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2021-10-11 02:32:50,892 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-10-11 02:32:51,088 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-10-11 02:32:51,317 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-10-11 02:32:51,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:51,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 4, 4] total 13 [2021-10-11 02:32:51,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320514204] [2021-10-11 02:32:51,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:32:51,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:51,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:32:51,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:32:51,426 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2021-10-11 02:32:51,938 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2021-10-11 02:32:52,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:52,030 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2021-10-11 02:32:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:32:52,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-10-11 02:32:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:52,031 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:32:52,031 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:32:52,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:32:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:32:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-10-11 02:32:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:32:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-11 02:32:52,034 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2021-10-11 02:32:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:52,034 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-11 02:32:52,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:32:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-11 02:32:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:32:52,035 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:52,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:52,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-11 02:32:52,246 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:52,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1795882651, now seen corresponding path program 1 times [2021-10-11 02:32:52,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:52,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561084908] [2021-10-11 02:32:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:52,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561084908] [2021-10-11 02:32:52,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656455901] [2021-10-11 02:32:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:52,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:32:52,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:52,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:52,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1806000012] [2021-10-11 02:32:52,441 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-11 02:32:52,441 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:52,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:52,442 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:52,442 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:52,506 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:52,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:52,702 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:53,530 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:54,177 WARN L197 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2021-10-11 02:32:54,339 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-10-11 02:32:54,520 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-10-11 02:32:54,763 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-10-11 02:32:55,001 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:55,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:55,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2021-10-11 02:32:55,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094191403] [2021-10-11 02:32:55,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:32:55,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:55,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:32:55,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:32:55,003 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2021-10-11 02:32:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:55,261 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2021-10-11 02:32:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-11 02:32:55,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-10-11 02:32:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:55,262 INFO L225 Difference]: With dead ends: 65 [2021-10-11 02:32:55,262 INFO L226 Difference]: Without dead ends: 65 [2021-10-11 02:32:55,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2021-10-11 02:32:55,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-11 02:32:55,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2021-10-11 02:32:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:32:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-10-11 02:32:55,269 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 12 [2021-10-11 02:32:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:55,270 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-10-11 02:32:55,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:32:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-10-11 02:32:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:32:55,271 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:55,271 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1] [2021-10-11 02:32:55,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:55,490 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:55,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:55,491 INFO L82 PathProgramCache]: Analyzing trace with hash -982673158, now seen corresponding path program 1 times [2021-10-11 02:32:55,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:55,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446876007] [2021-10-11 02:32:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-11 02:32:55,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446876007] [2021-10-11 02:32:55,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293223472] [2021-10-11 02:32:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:55,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:32:55,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-11 02:32:55,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-11 02:32:55,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1998368729] [2021-10-11 02:32:55,971 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:32:55,972 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:55,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:55,972 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:55,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:56,049 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:56,269 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:56,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:56,899 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:57,124 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-10-11 02:32:57,797 WARN L197 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2021-10-11 02:32:57,926 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-10-11 02:32:58,051 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-10-11 02:32:58,381 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-10-11 02:32:58,483 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:58,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:58,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-10-11 02:32:58,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468745331] [2021-10-11 02:32:58,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-10-11 02:32:58,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:58,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-11 02:32:58,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:32:58,485 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 17 states. [2021-10-11 02:32:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:58,553 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2021-10-11 02:32:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:32:58,558 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2021-10-11 02:32:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:58,559 INFO L225 Difference]: With dead ends: 79 [2021-10-11 02:32:58,559 INFO L226 Difference]: Without dead ends: 79 [2021-10-11 02:32:58,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:32:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-11 02:32:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-10-11 02:32:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-10-11 02:32:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2021-10-11 02:32:58,566 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 31 [2021-10-11 02:32:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:58,567 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2021-10-11 02:32:58,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-10-11 02:32:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2021-10-11 02:32:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-11 02:32:58,569 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:58,570 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 1, 1, 1] [2021-10-11 02:32:58,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-10-11 02:32:58,774 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:58,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:58,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2066593926, now seen corresponding path program 2 times [2021-10-11 02:32:58,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:58,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228811466] [2021-10-11 02:32:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 322 proven. 145 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-10-11 02:32:59,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228811466] [2021-10-11 02:32:59,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095411088] [2021-10-11 02:32:59,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:59,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:32:59,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:32:59,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:32:59,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-10-11 02:32:59,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:59,838 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-10-11 02:32:59,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:32:59,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 3] total 19 [2021-10-11 02:32:59,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585052757] [2021-10-11 02:32:59,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:59,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:59,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:59,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:32:59,844 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2021-10-11 02:32:59,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:59,905 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2021-10-11 02:32:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:59,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2021-10-11 02:32:59,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:59,908 INFO L225 Difference]: With dead ends: 77 [2021-10-11 02:32:59,908 INFO L226 Difference]: Without dead ends: 77 [2021-10-11 02:32:59,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:32:59,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-11 02:32:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-11 02:32:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-10-11 02:32:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-10-11 02:32:59,935 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 67 [2021-10-11 02:32:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:59,939 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-10-11 02:32:59,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:59,940 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-10-11 02:32:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-11 02:32:59,943 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:59,943 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:00,144 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:33:00,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,144 INFO L82 PathProgramCache]: Analyzing trace with hash -162298974, now seen corresponding path program 2 times [2021-10-11 02:33:00,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206574142] [2021-10-11 02:33:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 323 proven. 145 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-11 02:33:00,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206574142] [2021-10-11 02:33:00,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441248395] [2021-10-11 02:33:00,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:00,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-11 02:33:00,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:33:00,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:33:00,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-10-11 02:33:00,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-10-11 02:33:01,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:33:01,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [13] total 17 [2021-10-11 02:33:01,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937647236] [2021-10-11 02:33:01,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:33:01,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:01,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:33:01,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:33:01,093 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 6 states. [2021-10-11 02:33:01,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:01,201 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2021-10-11 02:33:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:01,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2021-10-11 02:33:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:01,203 INFO L225 Difference]: With dead ends: 76 [2021-10-11 02:33:01,203 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:33:01,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:33:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:33:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:33:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:33:01,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:33:01,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2021-10-11 02:33:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:01,204 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:33:01,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:33:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:33:01,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:33:01,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:01,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:01 BoogieIcfgContainer [2021-10-11 02:33:01,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:01,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:01,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:01,438 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:01,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:44" (3/4) ... [2021-10-11 02:33:01,441 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:33:01,454 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:33:01,454 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:33:01,454 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:33:01,485 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc04c086-3d97-46a6-8c70-1131cf7d1f55/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:33:01,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:01,486 INFO L168 Benchmark]: Toolchain (without parser) took 17701.10 ms. Allocated memory was 90.2 MB in the beginning and 251.7 MB in the end (delta: 161.5 MB). Free memory was 47.9 MB in the beginning and 139.7 MB in the end (delta: -91.8 MB). Peak memory consumption was 72.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:01,487 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 63.9 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:01,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.03 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 47.7 MB in the beginning and 84.2 MB in the end (delta: -36.5 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:01,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.00 ms. Allocated memory is still 113.2 MB. Free memory was 84.2 MB in the beginning and 83.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:01,488 INFO L168 Benchmark]: Boogie Preprocessor took 27.72 ms. Allocated memory is still 113.2 MB. Free memory was 83.0 MB in the beginning and 81.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:01,488 INFO L168 Benchmark]: RCFGBuilder took 725.47 ms. Allocated memory is still 113.2 MB. Free memory was 81.6 MB in the beginning and 60.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:01,489 INFO L168 Benchmark]: TraceAbstraction took 16593.82 ms. Allocated memory was 113.2 MB in the beginning and 251.7 MB in the end (delta: 138.4 MB). Free memory was 59.5 MB in the beginning and 142.6 MB in the end (delta: -83.1 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:01,489 INFO L168 Benchmark]: Witness Printer took 48.05 ms. Allocated memory is still 251.7 MB. Free memory was 142.6 MB in the beginning and 139.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:01,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 63.9 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.03 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 47.7 MB in the beginning and 84.2 MB in the end (delta: -36.5 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.00 ms. Allocated memory is still 113.2 MB. Free memory was 84.2 MB in the beginning and 83.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.72 ms. Allocated memory is still 113.2 MB. Free memory was 83.0 MB in the beginning and 81.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 725.47 ms. Allocated memory is still 113.2 MB. Free memory was 81.6 MB in the beginning and 60.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16593.82 ms. Allocated memory was 113.2 MB in the beginning and 251.7 MB in the end (delta: 138.4 MB). Free memory was 59.5 MB in the beginning and 142.6 MB in the end (delta: -83.1 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. * Witness Printer took 48.05 ms. Allocated memory is still 251.7 MB. Free memory was 142.6 MB in the beginning and 139.7 MB in the end (delta: 2.9 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: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.5s, OverallIterations: 13, TraceHistogramMax: 20, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 256 SDslu, 126 SDs, 0 SdLazy, 377 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 540 GetRequests, 410 SyntacticMatches, 16 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=11, 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, 13 MinimizatonAttempts, 61 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 448 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 630 ConstructedInterpolants, 67 QuantifiedInterpolants, 488061 SizeOfPredicates, 11 NumberOfNonLiveVariables, 546 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 3328/4020 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]: 2005, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME[ms]: 1029, 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: 45, TOOLS_QUANTIFIERELIM_TIME[ms]: 1000, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 222, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 84, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 338, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME[ms]: 490, DOMAIN_ISSUBSETEQ_APPLICATIONS: 7, DOMAIN_ISSUBSETEQ_TIME[ms]: 31, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME[ms]: 42, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 1514, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 1513, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 7, 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]: 3, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 17, DAG_COMPRESSION_PROCESSED_NODES: 110, DAG_COMPRESSION_RETAINED_NODES: 51, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...