./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c -s /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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 32bit --witnessprinter.graph.data.programhash a4e278d158dd9e8a83bb0a2afcbaa26c6819a0f8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:19:47,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:19:47,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:19:47,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:19:47,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:19:47,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:19:47,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:19:47,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:19:47,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:19:47,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:19:47,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:19:47,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:19:47,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:19:47,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:19:47,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:19:47,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:19:47,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:19:47,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:19:47,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:19:47,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:19:47,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:19:47,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:19:47,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:19:47,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:19:47,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:19:47,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:19:47,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:19:47,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:19:47,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:19:47,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:19:47,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:19:47,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:19:47,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:19:47,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:19:47,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:19:47,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:19:47,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:19:47,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:19:47,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:19:47,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:19:47,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:19:47,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 00:19:47,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:19:47,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:19:47,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:19:47,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:19:47,653 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:19:47,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:19:47,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:19:47,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:19:47,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:19:47,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:19:47,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:19:47,657 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:19:47,657 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:19:47,658 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:19:47,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:19:47,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:19:47,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:19:47,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:19:47,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:19:47,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:19:47,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:19:47,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:19:47,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:19:47,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:19:47,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:19:47,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:19:47,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:19:47,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:19:47,662 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_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4e278d158dd9e8a83bb0a2afcbaa26c6819a0f8 [2020-11-30 00:19:48,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:19:48,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:19:48,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:19:48,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:19:48,124 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:19:48,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2020-11-30 00:19:48,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/data/3f7869635/f171d74629db418f826a7ee3ec5c7c11/FLAG611b1da0c [2020-11-30 00:19:48,874 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:19:48,875 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2020-11-30 00:19:48,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/data/3f7869635/f171d74629db418f826a7ee3ec5c7c11/FLAG611b1da0c [2020-11-30 00:19:49,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/data/3f7869635/f171d74629db418f826a7ee3ec5c7c11 [2020-11-30 00:19:49,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:19:49,270 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:19:49,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:19:49,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:19:49,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:19:49,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e63368d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49, skipping insertion in model container [2020-11-30 00:19:49,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:19:49,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:19:49,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:19:49,502 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:19:49,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:19:49,551 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:19:49,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49 WrapperNode [2020-11-30 00:19:49,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:19:49,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:19:49,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:19:49,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:19:49,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (1/1) ... [2020-11-30 00:19:49,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:19:49,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:19:49,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:19:49,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:19:49,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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 [2020-11-30 00:19:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:19:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:19:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-30 00:19:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:19:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-30 00:19:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:19:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:19:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:19:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:19:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:19:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:19:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:19:50,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:19:50,276 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-30 00:19:50,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:50 BoogieIcfgContainer [2020-11-30 00:19:50,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:19:50,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:19:50,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:19:50,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:19:50,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:19:49" (1/3) ... [2020-11-30 00:19:50,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54583613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:19:50, skipping insertion in model container [2020-11-30 00:19:50,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:49" (2/3) ... [2020-11-30 00:19:50,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54583613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:19:50, skipping insertion in model container [2020-11-30 00:19:50,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:50" (3/3) ... [2020-11-30 00:19:50,296 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength.c [2020-11-30 00:19:50,318 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:19:50,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-30 00:19:50,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-30 00:19:50,359 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:19:50,359 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:19:50,360 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:19:50,360 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:19:50,360 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:19:50,360 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:19:50,360 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:19:50,360 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:19:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-30 00:19:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:19:50,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:50,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:50,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:50,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-11-30 00:19:50,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:50,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718627777] [2020-11-30 00:19:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:50,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718627777] [2020-11-30 00:19:50,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:50,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:19:50,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78386245] [2020-11-30 00:19:50,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:19:50,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:50,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:19:50,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:50,724 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-11-30 00:19:51,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:51,032 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-11-30 00:19:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:19:51,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 00:19:51,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:51,060 INFO L225 Difference]: With dead ends: 58 [2020-11-30 00:19:51,060 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 00:19:51,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:19:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 00:19:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-11-30 00:19:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:19:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-30 00:19:51,114 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-11-30 00:19:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:51,115 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-30 00:19:51,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:19:51,115 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-30 00:19:51,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:19:51,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:51,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:51,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:19:51,117 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-11-30 00:19:51,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:51,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252120808] [2020-11-30 00:19:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:51,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252120808] [2020-11-30 00:19:51,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:51,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:19:51,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007102193] [2020-11-30 00:19:51,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:19:51,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:19:51,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:19:51,297 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-11-30 00:19:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:51,697 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-11-30 00:19:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:19:51,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 00:19:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:51,701 INFO L225 Difference]: With dead ends: 59 [2020-11-30 00:19:51,701 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 00:19:51,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:19:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 00:19:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2020-11-30 00:19:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 00:19:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-30 00:19:51,724 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2020-11-30 00:19:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:51,725 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-30 00:19:51,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:19:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-30 00:19:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:19:51,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:51,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:51,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:19:51,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:51,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:51,739 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2020-11-30 00:19:51,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:51,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198609261] [2020-11-30 00:19:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:51,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198609261] [2020-11-30 00:19:51,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:51,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:19:51,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785637191] [2020-11-30 00:19:51,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:19:51,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:51,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:19:51,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:51,897 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2020-11-30 00:19:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:52,000 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-11-30 00:19:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:19:52,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-30 00:19:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:52,004 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:19:52,004 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 00:19:52,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:52,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 00:19:52,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-30 00:19:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:19:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-11-30 00:19:52,012 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2020-11-30 00:19:52,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:52,013 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-11-30 00:19:52,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:19:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-11-30 00:19:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:19:52,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:52,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:52,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:19:52,015 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:52,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:52,016 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2020-11-30 00:19:52,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:52,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930515230] [2020-11-30 00:19:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:52,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:52,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930515230] [2020-11-30 00:19:52,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:52,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:19:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493466216] [2020-11-30 00:19:52,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:19:52,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:19:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:52,168 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-11-30 00:19:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:52,326 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-11-30 00:19:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:19:52,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-30 00:19:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:52,328 INFO L225 Difference]: With dead ends: 47 [2020-11-30 00:19:52,328 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 00:19:52,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 00:19:52,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-30 00:19:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 00:19:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-30 00:19:52,338 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2020-11-30 00:19:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:52,339 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-30 00:19:52,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:19:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-30 00:19:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:19:52,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:52,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:52,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:19:52,342 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:52,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2020-11-30 00:19:52,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:52,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739049485] [2020-11-30 00:19:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:52,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:52,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739049485] [2020-11-30 00:19:52,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482470007] [2020-11-30 00:19:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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 [2020-11-30 00:19:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:52,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:19:52,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:52,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:52,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-11-30 00:19:52,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18175182] [2020-11-30 00:19:52,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:19:52,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:19:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:19:52,682 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2020-11-30 00:19:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:52,889 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-11-30 00:19:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:19:52,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-30 00:19:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:52,892 INFO L225 Difference]: With dead ends: 69 [2020-11-30 00:19:52,892 INFO L226 Difference]: Without dead ends: 69 [2020-11-30 00:19:52,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:19:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-30 00:19:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-11-30 00:19:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 00:19:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-30 00:19:52,902 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2020-11-30 00:19:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:52,903 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-30 00:19:52,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:19:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-30 00:19:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:19:52,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:52,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:53,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:53,120 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:53,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2020-11-30 00:19:53,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:53,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774978125] [2020-11-30 00:19:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:53,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:53,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774978125] [2020-11-30 00:19:53,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734786074] [2020-11-30 00:19:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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 [2020-11-30 00:19:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:53,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:19:53,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:53,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:19:53,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-11-30 00:19:53,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518488637] [2020-11-30 00:19:53,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:19:53,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:53,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:19:53,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:19:53,471 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-11-30 00:19:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:53,711 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-11-30 00:19:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:19:53,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 00:19:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:53,714 INFO L225 Difference]: With dead ends: 66 [2020-11-30 00:19:53,714 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 00:19:53,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:19:53,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 00:19:53,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-11-30 00:19:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 00:19:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-11-30 00:19:53,722 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2020-11-30 00:19:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:53,723 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-11-30 00:19:53,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:19:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-11-30 00:19:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:19:53,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:53,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:53,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:53,948 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:53,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2020-11-30 00:19:53,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:53,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374701488] [2020-11-30 00:19:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:54,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374701488] [2020-11-30 00:19:54,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:54,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:19:54,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816262405] [2020-11-30 00:19:54,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:19:54,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:54,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:19:54,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:19:54,078 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 6 states. [2020-11-30 00:19:54,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:54,259 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-11-30 00:19:54,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:19:54,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-30 00:19:54,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:54,262 INFO L225 Difference]: With dead ends: 53 [2020-11-30 00:19:54,262 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 00:19:54,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:19:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 00:19:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-30 00:19:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 00:19:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-11-30 00:19:54,269 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2020-11-30 00:19:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:54,269 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-11-30 00:19:54,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:19:54,269 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-11-30 00:19:54,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:19:54,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:54,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:54,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:19:54,271 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:54,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2020-11-30 00:19:54,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:54,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197815587] [2020-11-30 00:19:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:19:54,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197815587] [2020-11-30 00:19:54,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:54,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:19:54,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877057889] [2020-11-30 00:19:54,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:19:54,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:54,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:19:54,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:19:54,428 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 6 states. [2020-11-30 00:19:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:54,671 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-11-30 00:19:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:19:54,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-30 00:19:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:54,673 INFO L225 Difference]: With dead ends: 59 [2020-11-30 00:19:54,673 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 00:19:54,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:19:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 00:19:54,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-11-30 00:19:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 00:19:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-11-30 00:19:54,680 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 23 [2020-11-30 00:19:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:54,681 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-11-30 00:19:54,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:19:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-11-30 00:19:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:19:54,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:54,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:54,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:19:54,683 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2020-11-30 00:19:54,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:54,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119498619] [2020-11-30 00:19:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:19:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 00:19:54,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119498619] [2020-11-30 00:19:54,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547199147] [2020-11-30 00:19:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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 [2020-11-30 00:19:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:54,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:19:54,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:19:55,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:19:55,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2020-11-30 00:19:55,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663101156] [2020-11-30 00:19:55,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:19:55,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:55,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:19:55,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:19:55,048 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 6 states. [2020-11-30 00:19:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:55,219 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-11-30 00:19:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:19:55,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-30 00:19:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:55,221 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:19:55,221 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 00:19:55,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:19:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 00:19:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-11-30 00:19:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 00:19:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-30 00:19:55,228 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 26 [2020-11-30 00:19:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:55,228 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-30 00:19:55,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:19:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-30 00:19:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:19:55,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:55,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:55,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:55,431 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:55,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2020-11-30 00:19:55,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:55,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109509801] [2020-11-30 00:19:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:55,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:55,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:55,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109509801] [2020-11-30 00:19:55,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003826675] [2020-11-30 00:19:55,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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 [2020-11-30 00:19:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:55,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:19:55,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:55,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:55,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-30 00:19:55,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680898258] [2020-11-30 00:19:55,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:19:55,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:55,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:19:55,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:19:55,749 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 11 states. [2020-11-30 00:19:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:56,158 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-11-30 00:19:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:19:56,159 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-11-30 00:19:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:56,160 INFO L225 Difference]: With dead ends: 81 [2020-11-30 00:19:56,160 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 00:19:56,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:19:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 00:19:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2020-11-30 00:19:56,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-30 00:19:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-11-30 00:19:56,174 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 27 [2020-11-30 00:19:56,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:56,175 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-11-30 00:19:56,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:19:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-11-30 00:19:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:19:56,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:56,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:56,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:56,405 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:56,406 INFO L82 PathProgramCache]: Analyzing trace with hash -790766996, now seen corresponding path program 1 times [2020-11-30 00:19:56,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:56,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862189851] [2020-11-30 00:19:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:56,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:19:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 00:19:56,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862189851] [2020-11-30 00:19:56,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748862168] [2020-11-30 00:19:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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 [2020-11-30 00:19:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:56,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:19:56,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:56,664 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 [2020-11-30 00:19:56,665 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:19:56,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:19:56,676 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:19:56,676 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-30 00:19:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 00:19:56,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:56,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2020-11-30 00:19:56,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344801427] [2020-11-30 00:19:56,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:19:56,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:56,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:19:56,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:19:56,836 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 8 states. [2020-11-30 00:19:57,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:57,065 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-11-30 00:19:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:19:57,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-11-30 00:19:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:57,068 INFO L225 Difference]: With dead ends: 74 [2020-11-30 00:19:57,068 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 00:19:57,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:19:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 00:19:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-11-30 00:19:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 00:19:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-11-30 00:19:57,087 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 31 [2020-11-30 00:19:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:57,088 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-11-30 00:19:57,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:19:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-11-30 00:19:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-30 00:19:57,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:57,093 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:57,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-30 00:19:57,307 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:57,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 2 times [2020-11-30 00:19:57,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:57,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527378894] [2020-11-30 00:19:57,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:57,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:19:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 00:19:57,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527378894] [2020-11-30 00:19:57,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032916007] [2020-11-30 00:19:57,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/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 [2020-11-30 00:19:57,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:19:57,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:19:57,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:19:57,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-30 00:19:57,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:57,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-11-30 00:19:57,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65047210] [2020-11-30 00:19:57,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:19:57,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:57,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:19:57,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:19:57,658 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 12 states. [2020-11-30 00:19:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:58,296 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2020-11-30 00:19:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 00:19:58,296 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-11-30 00:19:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:58,297 INFO L225 Difference]: With dead ends: 83 [2020-11-30 00:19:58,298 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 00:19:58,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:19:58,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 00:19:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2020-11-30 00:19:58,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-30 00:19:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-11-30 00:19:58,302 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 43 [2020-11-30 00:19:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:58,302 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-11-30 00:19:58,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:19:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-11-30 00:19:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-30 00:19:58,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:58,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:58,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:58,506 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:58,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1104126516, now seen corresponding path program 1 times [2020-11-30 00:19:58,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:58,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992229056] [2020-11-30 00:19:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:58,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:19:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-30 00:19:58,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992229056] [2020-11-30 00:19:58,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967147005] [2020-11-30 00:19:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/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 [2020-11-30 00:19:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:58,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:19:58,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:58,722 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 [2020-11-30 00:19:58,723 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:19:58,727 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:19:58,727 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:19:58,727 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 00:19:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-30 00:19:58,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:58,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-11-30 00:19:58,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952966343] [2020-11-30 00:19:58,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:19:58,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:58,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:19:58,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:19:58,840 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 10 states. [2020-11-30 00:19:59,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:59,109 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2020-11-30 00:19:59,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:19:59,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-11-30 00:19:59,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:59,111 INFO L225 Difference]: With dead ends: 81 [2020-11-30 00:19:59,111 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 00:19:59,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:19:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 00:19:59,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-11-30 00:19:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 00:19:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-11-30 00:19:59,116 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 44 [2020-11-30 00:19:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:59,116 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-11-30 00:19:59,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:19:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-11-30 00:19:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-30 00:19:59,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:59,118 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:59,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:59,328 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:19:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:59,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1407287743, now seen corresponding path program 2 times [2020-11-30 00:19:59,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:59,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805604715] [2020-11-30 00:19:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:59,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:19:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:59,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:19:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:19:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 00:19:59,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805604715] [2020-11-30 00:19:59,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282728160] [2020-11-30 00:19:59,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:19:59,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 00:19:59,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:19:59,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:19:59,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:19:59,598 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 [2020-11-30 00:19:59,599 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:19:59,609 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:19:59,609 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:19:59,609 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 00:19:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 00:19:59,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:19:59,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-11-30 00:19:59,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193396977] [2020-11-30 00:19:59,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 00:19:59,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:59,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 00:19:59,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:19:59,919 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 16 states. [2020-11-30 00:20:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:00,574 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-11-30 00:20:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 00:20:00,575 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-11-30 00:20:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:00,576 INFO L225 Difference]: With dead ends: 108 [2020-11-30 00:20:00,576 INFO L226 Difference]: Without dead ends: 108 [2020-11-30 00:20:00,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-11-30 00:20:00,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-30 00:20:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 88. [2020-11-30 00:20:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 00:20:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2020-11-30 00:20:00,580 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 49 [2020-11-30 00:20:00,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:00,580 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2020-11-30 00:20:00,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 00:20:00,580 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2020-11-30 00:20:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-30 00:20:00,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:00,581 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:00,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-30 00:20:00,782 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:20:00,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:00,782 INFO L82 PathProgramCache]: Analyzing trace with hash -2125667663, now seen corresponding path program 1 times [2020-11-30 00:20:00,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:00,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578154785] [2020-11-30 00:20:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:00,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:20:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:20:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:20:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-30 00:20:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:00,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-30 00:20:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-30 00:20:00,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578154785] [2020-11-30 00:20:00,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841175355] [2020-11-30 00:20:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:01,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:20:01,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 81 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:20:01,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:20:01,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2020-11-30 00:20:01,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159025691] [2020-11-30 00:20:01,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 00:20:01,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:01,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 00:20:01,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:20:01,134 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 13 states. [2020-11-30 00:20:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:01,554 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2020-11-30 00:20:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:20:01,554 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-11-30 00:20:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:01,555 INFO L225 Difference]: With dead ends: 118 [2020-11-30 00:20:01,555 INFO L226 Difference]: Without dead ends: 112 [2020-11-30 00:20:01,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:20:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-30 00:20:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2020-11-30 00:20:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 00:20:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2020-11-30 00:20:01,560 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 72 [2020-11-30 00:20:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:01,560 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2020-11-30 00:20:01,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 00:20:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2020-11-30 00:20:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-30 00:20:01,562 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:01,562 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:01,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-30 00:20:01,763 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:20:01,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:01,763 INFO L82 PathProgramCache]: Analyzing trace with hash 267240299, now seen corresponding path program 2 times [2020-11-30 00:20:01,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:01,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268108859] [2020-11-30 00:20:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:20:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:01,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:20:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 00:20:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:01,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-30 00:20:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:01,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-30 00:20:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-30 00:20:01,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268108859] [2020-11-30 00:20:01,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998660503] [2020-11-30 00:20:01,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:20:01,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 00:20:01,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:20:01,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:20:01,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:02,031 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-11-30 00:20:02,032 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:20:02,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:20:02,035 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:20:02,035 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-11-30 00:20:02,085 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-11-30 00:20:02,086 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:20:02,090 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:20:02,090 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:20:02,090 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-11-30 00:20:02,146 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-11-30 00:20:02,148 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:20:02,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:20:02,151 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:20:02,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-11-30 00:20:02,212 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-11-30 00:20:02,220 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:20:02,223 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:20:02,224 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:20:02,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-11-30 00:20:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-11-30 00:20:02,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:20:02,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-11-30 00:20:02,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970820781] [2020-11-30 00:20:02,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:20:02,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:02,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:20:02,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:20:02,327 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 6 states. [2020-11-30 00:20:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:02,412 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2020-11-30 00:20:02,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:20:02,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-11-30 00:20:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:02,413 INFO L225 Difference]: With dead ends: 97 [2020-11-30 00:20:02,413 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:20:02,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:20:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:20:02,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:20:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:20:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:20:02,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2020-11-30 00:20:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:02,414 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:20:02,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:20:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:20:02,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:20:02,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-30 00:20:02,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:20:02 BoogieIcfgContainer [2020-11-30 00:20:02,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:20:02,625 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:20:02,625 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:20:02,625 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:20:02,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:50" (3/4) ... [2020-11-30 00:20:02,629 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:20:02,636 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-30 00:20:02,636 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-11-30 00:20:02,637 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-30 00:20:02,647 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 00:20:02,647 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 00:20:02,648 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:20:02,648 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:20:02,701 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_585b1c47-9012-4771-a1f5-9dcc0ce97e9e/bin/uautomizer/witness.graphml [2020-11-30 00:20:02,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:20:02,710 INFO L168 Benchmark]: Toolchain (without parser) took 13439.80 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 66.2 MB in the beginning and 52.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:02,710 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 96.5 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:02,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.06 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 74.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:02,711 INFO L168 Benchmark]: Boogie Preprocessor took 93.28 ms. Allocated memory is still 96.5 MB. Free memory was 74.1 MB in the beginning and 72.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:02,711 INFO L168 Benchmark]: RCFGBuilder took 625.23 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 57.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:02,712 INFO L168 Benchmark]: TraceAbstraction took 12340.77 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 57.4 MB in the beginning and 55.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:02,712 INFO L168 Benchmark]: Witness Printer took 83.97 ms. Allocated memory is still 142.6 MB. Free memory was 55.1 MB in the beginning and 52.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:02,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 96.5 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.06 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 74.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.28 ms. Allocated memory is still 96.5 MB. Free memory was 74.1 MB in the beginning and 72.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 625.23 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 57.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12340.77 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 57.4 MB in the beginning and 55.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.1 GB. * Witness Printer took 83.97 ms. Allocated memory is still 142.6 MB. Free memory was 55.1 MB in the beginning and 52.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: array index is always in bounds For all program executions holds that array index is always in bounds 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: 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: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: 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 4 procedures, 40 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.2s, OverallIterations: 16, TraceHistogramMax: 5, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 372 SDtfs, 882 SDslu, 844 SDs, 0 SdLazy, 2298 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 617 GetRequests, 455 SyntacticMatches, 19 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=15, 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, 16 MinimizatonAttempts, 140 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 931 NumberOfCodeBlocks, 825 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 905 ConstructedInterpolants, 91 QuantifiedInterpolants, 188970 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1183 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 661/776 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...