./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b9dfe2826dbd43b76a93fbf593c8a07947a4c894 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:02:06,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:06,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:06,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:06,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:06,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:06,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:06,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:06,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:06,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:06,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:06,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:06,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:06,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:06,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:06,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:06,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:06,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:06,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:06,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:06,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:06,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:06,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:06,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:06,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:06,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:06,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:06,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:06,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:06,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:06,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:06,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:06,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:06,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:06,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:06,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:06,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:06,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:06,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:06,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:06,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:06,215 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-11-28 03:02:06,262 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:06,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:06,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:06,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:06,266 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:06,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:06,266 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:02:06,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:02:06,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:06,267 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:02:06,269 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:02:06,269 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:02:06,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:02:06,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:02:06,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:06,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:06,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:06,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:02:06,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:02:06,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:06,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:06,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:02:06,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:02:06,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:02:06,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:06,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9dfe2826dbd43b76a93fbf593c8a07947a4c894 [2020-11-28 03:02:06,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:06,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:06,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:06,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:06,699 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:06,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2020-11-28 03:02:06,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/data/1155a7f93/5dd2996304b142bab9cb5ceb847a58ed/FLAG3b4208a1b [2020-11-28 03:02:07,384 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:07,385 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2020-11-28 03:02:07,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/data/1155a7f93/5dd2996304b142bab9cb5ceb847a58ed/FLAG3b4208a1b [2020-11-28 03:02:07,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/data/1155a7f93/5dd2996304b142bab9cb5ceb847a58ed [2020-11-28 03:02:07,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:07,737 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:02:07,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:07,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:07,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:07,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:07" (1/1) ... [2020-11-28 03:02:07,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303e8603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:07, skipping insertion in model container [2020-11-28 03:02:07,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:07" (1/1) ... [2020-11-28 03:02:07,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:07,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:07,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:07,991 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:08,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:08,035 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:08,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08 WrapperNode [2020-11-28 03:02:08,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:08,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:08,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:08,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:08,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (1/1) ... [2020-11-28 03:02:08,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (1/1) ... [2020-11-28 03:02:08,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (1/1) ... [2020-11-28 03:02:08,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (1/1) ... [2020-11-28 03:02:08,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (1/1) ... [2020-11-28 03:02:08,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (1/1) ... [2020-11-28 03:02:08,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (1/1) ... [2020-11-28 03:02:08,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:08,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:08,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:08,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:08,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:02:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:02:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:02:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:08,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:02:08,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:08,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:08,536 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 03:02:08,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:08 BoogieIcfgContainer [2020-11-28 03:02:08,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:08,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:02:08,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:02:08,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:02:08,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:02:07" (1/3) ... [2020-11-28 03:02:08,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528baa17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:08, skipping insertion in model container [2020-11-28 03:02:08,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:08" (2/3) ... [2020-11-28 03:02:08,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528baa17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:08, skipping insertion in model container [2020-11-28 03:02:08,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:08" (3/3) ... [2020-11-28 03:02:08,550 INFO L111 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2020-11-28 03:02:08,564 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:02:08,569 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-11-28 03:02:08,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-11-28 03:02:08,639 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:02:08,640 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:02:08,640 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:02:08,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:08,640 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:08,641 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:02:08,641 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:08,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:02:08,659 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-28 03:02:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:02:08,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:08,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:08,687 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:08,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1038673271, now seen corresponding path program 1 times [2020-11-28 03:02:08,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:08,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332851063] [2020-11-28 03:02:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:09,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:09,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332851063] [2020-11-28 03:02:09,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:09,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:02:09,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403633198] [2020-11-28 03:02:09,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:02:09,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:02:09,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:09,207 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-11-28 03:02:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:09,369 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-11-28 03:02:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:02:09,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:02:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:09,382 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:02:09,382 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:02:09,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:02:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-11-28 03:02:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:02:09,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-28 03:02:09,450 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-11-28 03:02:09,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:09,451 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-28 03:02:09,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:02:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-28 03:02:09,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:02:09,453 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:09,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:09,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:02:09,455 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:09,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1038673272, now seen corresponding path program 1 times [2020-11-28 03:02:09,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:09,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231920623] [2020-11-28 03:02:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:09,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231920623] [2020-11-28 03:02:09,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:09,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:02:09,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970914779] [2020-11-28 03:02:09,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:02:09,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:09,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:02:09,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:09,595 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-11-28 03:02:09,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:09,720 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-28 03:02:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:02:09,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:02:09,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:09,722 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:02:09,722 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:02:09,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:02:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 03:02:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:02:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-11-28 03:02:09,728 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2020-11-28 03:02:09,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:09,729 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-11-28 03:02:09,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:02:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-11-28 03:02:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:02:09,730 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:09,730 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:09,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:02:09,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:09,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1416659532, now seen corresponding path program 1 times [2020-11-28 03:02:09,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:09,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100047349] [2020-11-28 03:02:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:09,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:09,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100047349] [2020-11-28 03:02:09,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691212403] [2020-11-28 03:02:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:09,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:02:09,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:10,060 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:02:10,060 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:02:10,071 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:02:10,072 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:02:10,072 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-28 03:02:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:10,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:02:10,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2020-11-28 03:02:10,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31611565] [2020-11-28 03:02:10,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:02:10,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:10,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:02:10,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:02:10,128 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2020-11-28 03:02:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:10,258 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-11-28 03:02:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:02:10,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-28 03:02:10,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:10,261 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:02:10,261 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 03:02:10,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:02:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 03:02:10,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 03:02:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:02:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-11-28 03:02:10,268 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 12 [2020-11-28 03:02:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:10,269 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-11-28 03:02:10,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:02:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-11-28 03:02:10,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:02:10,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:10,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:10,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:02:10,472 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:10,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:10,472 INFO L82 PathProgramCache]: Analyzing trace with hash 945846593, now seen corresponding path program 1 times [2020-11-28 03:02:10,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:10,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258418454] [2020-11-28 03:02:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:02:10,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258418454] [2020-11-28 03:02:10,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:10,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:02:10,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196841105] [2020-11-28 03:02:10,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:02:10,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:10,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:02:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:10,593 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2020-11-28 03:02:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:10,686 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-11-28 03:02:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:02:10,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 03:02:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:10,689 INFO L225 Difference]: With dead ends: 46 [2020-11-28 03:02:10,689 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 03:02:10,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 03:02:10,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-11-28 03:02:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:02:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-11-28 03:02:10,698 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 22 [2020-11-28 03:02:10,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:10,699 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-11-28 03:02:10,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:02:10,699 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-11-28 03:02:10,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:02:10,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:10,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:10,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:02:10,701 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:10,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:10,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1574303516, now seen corresponding path program 1 times [2020-11-28 03:02:10,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:10,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032867508] [2020-11-28 03:02:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:02:10,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032867508] [2020-11-28 03:02:10,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:10,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:02:10,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761008469] [2020-11-28 03:02:10,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:02:10,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:10,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:02:10,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:10,780 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2020-11-28 03:02:10,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:10,918 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-11-28 03:02:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:02:10,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-28 03:02:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:10,921 INFO L225 Difference]: With dead ends: 48 [2020-11-28 03:02:10,922 INFO L226 Difference]: Without dead ends: 48 [2020-11-28 03:02:10,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:02:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-28 03:02:10,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-11-28 03:02:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:02:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-11-28 03:02:10,935 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2020-11-28 03:02:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:10,935 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-11-28 03:02:10,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:02:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-11-28 03:02:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:02:10,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:10,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:10,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:02:10,940 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:10,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1258071097, now seen corresponding path program 1 times [2020-11-28 03:02:10,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:10,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256796393] [2020-11-28 03:02:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:11,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256796393] [2020-11-28 03:02:11,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057571094] [2020-11-28 03:02:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:11,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:02:11,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:11,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:02:11,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-11-28 03:02:11,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855469593] [2020-11-28 03:02:11,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:02:11,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:11,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:02:11,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:02:11,203 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2020-11-28 03:02:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:11,304 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-11-28 03:02:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:02:11,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-11-28 03:02:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:11,306 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:02:11,306 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:02:11,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:02:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:02:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-11-28 03:02:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 03:02:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-11-28 03:02:11,313 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 26 [2020-11-28 03:02:11,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:11,314 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-11-28 03:02:11,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:02:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-11-28 03:02:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:02:11,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:11,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:11,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:11,535 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:11,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:11,536 INFO L82 PathProgramCache]: Analyzing trace with hash -113674038, now seen corresponding path program 2 times [2020-11-28 03:02:11,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:11,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405854627] [2020-11-28 03:02:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:11,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405854627] [2020-11-28 03:02:11,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25898746] [2020-11-28 03:02:11,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:11,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:02:11,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:02:11,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:02:11,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-11-28 03:02:11,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:02:11,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2020-11-28 03:02:11,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660802175] [2020-11-28 03:02:11,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:02:11,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:11,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:02:11,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:02:11,815 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 5 states. [2020-11-28 03:02:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:11,891 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-11-28 03:02:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:02:11,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 03:02:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:11,892 INFO L225 Difference]: With dead ends: 48 [2020-11-28 03:02:11,892 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 03:02:11,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:02:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 03:02:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-28 03:02:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 03:02:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-11-28 03:02:11,903 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2020-11-28 03:02:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:11,904 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-11-28 03:02:11,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:02:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-11-28 03:02:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:02:11,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:11,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:12,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:12,134 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1865200645, now seen corresponding path program 1 times [2020-11-28 03:02:12,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:12,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056276284] [2020-11-28 03:02:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:12,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:02:12,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056276284] [2020-11-28 03:02:12,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014340576] [2020-11-28 03:02:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:12,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:02:12,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:02:12,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:02:12,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-11-28 03:02:12,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438857869] [2020-11-28 03:02:12,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:02:12,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:12,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:02:12,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:02:12,392 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 9 states. [2020-11-28 03:02:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:12,486 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-11-28 03:02:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:02:12,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-11-28 03:02:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:12,488 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:02:12,488 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 03:02:12,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:02:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 03:02:12,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-11-28 03:02:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 03:02:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-11-28 03:02:12,494 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2020-11-28 03:02:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:12,495 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-11-28 03:02:12,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:02:12,496 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-11-28 03:02:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:02:12,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:12,497 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:12,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:12,698 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:12,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:12,699 INFO L82 PathProgramCache]: Analyzing trace with hash 133323454, now seen corresponding path program 2 times [2020-11-28 03:02:12,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:12,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249879012] [2020-11-28 03:02:12,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:02:12,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249879012] [2020-11-28 03:02:12,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321488018] [2020-11-28 03:02:12,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:12,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:02:12,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:02:12,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:02:12,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:02:12,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:02:12,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-11-28 03:02:12,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377251394] [2020-11-28 03:02:12,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:02:12,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:12,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:02:12,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:02:12,989 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 10 states. [2020-11-28 03:02:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:13,100 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-11-28 03:02:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:02:13,101 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-11-28 03:02:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:13,102 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:02:13,102 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:02:13,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:02:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:02:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-11-28 03:02:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 03:02:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-28 03:02:13,108 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 36 [2020-11-28 03:02:13,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:13,109 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-28 03:02:13,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:02:13,109 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-28 03:02:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:02:13,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:13,110 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:13,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:13,323 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:02:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:13,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1483321343, now seen corresponding path program 3 times [2020-11-28 03:02:13,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:13,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308345491] [2020-11-28 03:02:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:02:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:02:13,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308345491] [2020-11-28 03:02:13,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349246100] [2020-11-28 03:02:13,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/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 [2020-11-28 03:02:13,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 03:02:13,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:02:13,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:02:13,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:13,596 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:02:13,597 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:02:13,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:02:13,605 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:02:13,606 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-28 03:02:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-11-28 03:02:13,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:02:13,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2020-11-28 03:02:13,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871268313] [2020-11-28 03:02:13,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:02:13,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:13,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:02:13,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:02:13,751 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-11-28 03:02:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:13,875 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-11-28 03:02:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:02:13,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-11-28 03:02:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:13,876 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:02:13,876 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:02:13,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:02:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:02:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:02:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:02:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:02:13,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-11-28 03:02:13,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:13,878 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:02:13,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:02:13,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:02:13,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:02:14,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:02:14,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:02:14 BoogieIcfgContainer [2020-11-28 03:02:14,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:02:14,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:14,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:14,084 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:14,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:08" (3/4) ... [2020-11-28 03:02:14,087 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:02:14,093 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 03:02:14,094 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 03:02:14,098 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 03:02:14,098 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 03:02:14,098 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:02:14,099 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:02:14,160 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e9f660a9-bf6a-4227-a171-e9a8f456e3c6/bin/uautomizer/witness.graphml [2020-11-28 03:02:14,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:14,162 INFO L168 Benchmark]: Toolchain (without parser) took 6423.79 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 75.8 MB in the beginning and 41.3 MB in the end (delta: 34.4 MB). Peak memory consumption was 80.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:14,162 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:14,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.90 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 75.8 MB in the beginning and 124.3 MB in the end (delta: -48.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:14,164 INFO L168 Benchmark]: Boogie Preprocessor took 42.25 ms. Allocated memory is still 146.8 MB. Free memory was 124.3 MB in the beginning and 122.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:14,164 INFO L168 Benchmark]: RCFGBuilder took 457.74 ms. Allocated memory is still 146.8 MB. Free memory was 122.8 MB in the beginning and 108.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:14,165 INFO L168 Benchmark]: TraceAbstraction took 5542.43 ms. Allocated memory is still 146.8 MB. Free memory was 108.1 MB in the beginning and 44.5 MB in the end (delta: 63.6 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:14,166 INFO L168 Benchmark]: Witness Printer took 76.53 ms. Allocated memory is still 146.8 MB. Free memory was 44.5 MB in the beginning and 41.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:14,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.90 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 75.8 MB in the beginning and 124.3 MB in the end (delta: -48.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.25 ms. Allocated memory is still 146.8 MB. Free memory was 124.3 MB in the beginning and 122.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 457.74 ms. Allocated memory is still 146.8 MB. Free memory was 122.8 MB in the beginning and 108.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5542.43 ms. Allocated memory is still 146.8 MB. Free memory was 108.1 MB in the beginning and 44.5 MB in the end (delta: 63.6 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. * Witness Printer took 76.53 ms. Allocated memory is still 146.8 MB. Free memory was 44.5 MB in the beginning and 41.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 213 SDtfs, 156 SDslu, 484 SDs, 0 SdLazy, 505 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 414 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 398 ConstructedInterpolants, 1 QuantifiedInterpolants, 51941 SizeOfPredicates, 4 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 142/416 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...