./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 76e89a58b9c6f7059fcf416ee7a1666558a3d440 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:12:20,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:12:20,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:12:20,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:12:20,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:12:20,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:12:20,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:12:20,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:12:20,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:12:20,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:12:20,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:12:20,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:12:20,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:12:20,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:12:20,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:12:20,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:12:20,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:12:20,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:12:20,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:12:20,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:12:20,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:12:20,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:12:20,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:12:20,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:12:20,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:12:20,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:12:20,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:12:20,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:12:20,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:12:20,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:12:20,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:12:20,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:12:20,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:12:20,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:12:20,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:12:20,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:12:20,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:12:20,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:12:20,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:12:20,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:12:20,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:12:20,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-11-30 01:12:20,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:12:20,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:12:20,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:12:20,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:12:20,291 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:12:20,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:12:20,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:12:20,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:12:20,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:12:20,292 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 01:12:20,294 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 01:12:20,294 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 01:12:20,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:12:20,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:12:20,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:12:20,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:12:20,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:12:20,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:12:20,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:12:20,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:12:20,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:12:20,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:12:20,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:12:20,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:12:20,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:12:20,297 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_46115b33-2962-4d1e-8a5f-867a27a1a61e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76e89a58b9c6f7059fcf416ee7a1666558a3d440 [2020-11-30 01:12:20,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:12:20,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:12:20,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:12:20,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:12:20,584 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:12:20,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2020-11-30 01:12:20,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/data/87b54b500/10ce8bc5308148448ec965589a99e0d5/FLAG6a740b980 [2020-11-30 01:12:21,235 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:12:21,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2020-11-30 01:12:21,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/data/87b54b500/10ce8bc5308148448ec965589a99e0d5/FLAG6a740b980 [2020-11-30 01:12:21,621 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/data/87b54b500/10ce8bc5308148448ec965589a99e0d5 [2020-11-30 01:12:21,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:12:21,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 01:12:21,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:21,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:12:21,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:12:21,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624297d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21, skipping insertion in model container [2020-11-30 01:12:21,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:12:21,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:12:21,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:21,809 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:12:21,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:21,863 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:12:21,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21 WrapperNode [2020-11-30 01:12:21,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:21,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:12:21,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:12:21,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:12:21,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (1/1) ... [2020-11-30 01:12:21,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:12:21,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:12:21,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:12:21,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:12:21,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 01:12:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:12:21,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 01:12:21,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 01:12:21,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 01:12:21,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:12:21,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:12:21,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:12:21,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:12:21,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 01:12:21,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:12:22,249 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:12:22,250 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-30 01:12:22,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:22 BoogieIcfgContainer [2020-11-30 01:12:22,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:12:22,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:12:22,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:12:22,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:12:22,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:12:21" (1/3) ... [2020-11-30 01:12:22,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16872171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:12:22, skipping insertion in model container [2020-11-30 01:12:22,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:21" (2/3) ... [2020-11-30 01:12:22,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16872171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:12:22, skipping insertion in model container [2020-11-30 01:12:22,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:22" (3/3) ... [2020-11-30 01:12:22,262 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination3-1.c [2020-11-30 01:12:22,274 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:12:22,277 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 01:12:22,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 01:12:22,307 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:12:22,307 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 01:12:22,307 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:12:22,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:12:22,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:12:22,308 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:12:22,308 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:12:22,308 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:12:22,321 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-30 01:12:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:12:22,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:22,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:22,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1254763092, now seen corresponding path program 1 times [2020-11-30 01:12:22,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:22,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323497471] [2020-11-30 01:12:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:22,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:22,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323497471] [2020-11-30 01:12:22,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:22,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:12:22,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892334799] [2020-11-30 01:12:22,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:12:22,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:22,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:12:22,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:12:22,643 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-11-30 01:12:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:22,803 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-11-30 01:12:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:12:22,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 01:12:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:22,821 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:12:22,829 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 01:12:22,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:12:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 01:12:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-11-30 01:12:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 01:12:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-30 01:12:22,860 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 8 [2020-11-30 01:12:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:22,860 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-30 01:12:22,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:12:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-30 01:12:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:12:22,861 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:22,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:22,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:12:22,862 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:22,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1254763091, now seen corresponding path program 1 times [2020-11-30 01:12:22,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:22,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821142035] [2020-11-30 01:12:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:22,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:22,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821142035] [2020-11-30 01:12:22,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:22,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:12:22,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781826076] [2020-11-30 01:12:22,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:12:22,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:22,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:12:22,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:12:22,945 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 4 states. [2020-11-30 01:12:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:23,010 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-30 01:12:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:12:23,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 01:12:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:23,012 INFO L225 Difference]: With dead ends: 24 [2020-11-30 01:12:23,012 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 01:12:23,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:12:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 01:12:23,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 01:12:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 01:12:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-11-30 01:12:23,020 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 8 [2020-11-30 01:12:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:23,020 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-11-30 01:12:23,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:12:23,021 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-11-30 01:12:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:12:23,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:23,021 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:23,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:12:23,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:23,026 INFO L82 PathProgramCache]: Analyzing trace with hash 707835031, now seen corresponding path program 1 times [2020-11-30 01:12:23,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:23,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608161396] [2020-11-30 01:12:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:23,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:23,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608161396] [2020-11-30 01:12:23,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348470547] [2020-11-30 01:12:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:23,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:12:23,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:23,319 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 01:12:23,319 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:12:23,327 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:12:23,328 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:12:23,328 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-30 01:12:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:23,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:12:23,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2020-11-30 01:12:23,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073387802] [2020-11-30 01:12:23,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:12:23,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:23,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:12:23,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:12:23,367 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2020-11-30 01:12:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:23,489 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-30 01:12:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:12:23,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-30 01:12:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:23,492 INFO L225 Difference]: With dead ends: 30 [2020-11-30 01:12:23,492 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 01:12:23,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:12:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 01:12:23,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 01:12:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 01:12:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-30 01:12:23,497 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 12 [2020-11-30 01:12:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:23,500 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-30 01:12:23,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:12:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-30 01:12:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:12:23,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:23,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:23,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 01:12:23,705 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:23,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:23,705 INFO L82 PathProgramCache]: Analyzing trace with hash 671779276, now seen corresponding path program 1 times [2020-11-30 01:12:23,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:23,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988841765] [2020-11-30 01:12:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 01:12:23,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988841765] [2020-11-30 01:12:23,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:23,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:12:23,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006717387] [2020-11-30 01:12:23,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:12:23,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:23,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:12:23,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:12:23,836 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2020-11-30 01:12:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:23,971 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-11-30 01:12:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:12:23,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 01:12:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:23,974 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:12:23,974 INFO L226 Difference]: Without dead ends: 33 [2020-11-30 01:12:23,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:12:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-30 01:12:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-11-30 01:12:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 01:12:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-30 01:12:23,982 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-11-30 01:12:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:23,982 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-30 01:12:23,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:12:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-30 01:12:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:12:23,983 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:23,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:23,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:12:23,984 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:23,985 INFO L82 PathProgramCache]: Analyzing trace with hash -649672835, now seen corresponding path program 1 times [2020-11-30 01:12:23,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:23,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375504832] [2020-11-30 01:12:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 01:12:24,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375504832] [2020-11-30 01:12:24,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:24,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:12:24,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968203191] [2020-11-30 01:12:24,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:12:24,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:24,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:12:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:12:24,084 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-11-30 01:12:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:24,150 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-30 01:12:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:12:24,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-30 01:12:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:24,152 INFO L225 Difference]: With dead ends: 30 [2020-11-30 01:12:24,152 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 01:12:24,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 01:12:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 01:12:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 01:12:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 01:12:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-30 01:12:24,158 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2020-11-30 01:12:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:24,159 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-30 01:12:24,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:12:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-30 01:12:24,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:12:24,160 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:24,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:24,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:12:24,161 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:24,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:24,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976847, now seen corresponding path program 1 times [2020-11-30 01:12:24,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:24,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041607755] [2020-11-30 01:12:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:24,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:24,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041607755] [2020-11-30 01:12:24,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882149751] [2020-11-30 01:12:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:24,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:12:24,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:24,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:12:24,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-11-30 01:12:24,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327104221] [2020-11-30 01:12:24,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:12:24,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:24,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:12:24,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:12:24,403 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-11-30 01:12:24,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:24,486 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-11-30 01:12:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:12:24,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-11-30 01:12:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:24,488 INFO L225 Difference]: With dead ends: 37 [2020-11-30 01:12:24,489 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:12:24,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:12:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:12:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-11-30 01:12:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 01:12:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-11-30 01:12:24,495 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 24 [2020-11-30 01:12:24,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:24,495 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-11-30 01:12:24,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:12:24,496 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-11-30 01:12:24,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 01:12:24,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:24,497 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:24,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:24,718 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:24,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1360643474, now seen corresponding path program 2 times [2020-11-30 01:12:24,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:24,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989706461] [2020-11-30 01:12:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:24,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989706461] [2020-11-30 01:12:24,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416540466] [2020-11-30 01:12:24,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:24,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 01:12:24,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:24,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:12:24,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-11-30 01:12:24,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:12:24,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2020-11-30 01:12:24,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999213809] [2020-11-30 01:12:24,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:12:24,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:24,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:12:24,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:12:24,947 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 5 states. [2020-11-30 01:12:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:24,991 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-11-30 01:12:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:12:24,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-11-30 01:12:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:24,993 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:12:24,993 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 01:12:24,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:12:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 01:12:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 01:12:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 01:12:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-30 01:12:24,997 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 28 [2020-11-30 01:12:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:24,997 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-30 01:12:24,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:12:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-30 01:12:24,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 01:12:24,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:24,998 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:25,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:25,210 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:25,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:25,211 INFO L82 PathProgramCache]: Analyzing trace with hash -775549161, now seen corresponding path program 1 times [2020-11-30 01:12:25,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:25,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515554006] [2020-11-30 01:12:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:25,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515554006] [2020-11-30 01:12:25,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492831103] [2020-11-30 01:12:25,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:25,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:12:25,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:25,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:12:25,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-11-30 01:12:25,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746920630] [2020-11-30 01:12:25,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:12:25,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:25,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:12:25,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:12:25,400 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 9 states. [2020-11-30 01:12:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:25,475 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-30 01:12:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:12:25,478 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-11-30 01:12:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:25,479 INFO L225 Difference]: With dead ends: 37 [2020-11-30 01:12:25,479 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:12:25,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:12:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:12:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-11-30 01:12:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 01:12:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-11-30 01:12:25,496 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 29 [2020-11-30 01:12:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:25,496 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-11-30 01:12:25,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:12:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-11-30 01:12:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:12:25,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:25,498 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:25,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:25,722 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:25,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:25,723 INFO L82 PathProgramCache]: Analyzing trace with hash -105276236, now seen corresponding path program 2 times [2020-11-30 01:12:25,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:25,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838679775] [2020-11-30 01:12:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:25,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838679775] [2020-11-30 01:12:25,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377307264] [2020-11-30 01:12:25,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:25,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:12:25,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:25,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:12:25,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:25,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:12:25,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-11-30 01:12:25,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878753876] [2020-11-30 01:12:25,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:12:25,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:25,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:12:25,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:12:25,957 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 10 states. [2020-11-30 01:12:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:26,022 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-30 01:12:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:12:26,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-11-30 01:12:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:26,023 INFO L225 Difference]: With dead ends: 41 [2020-11-30 01:12:26,023 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 01:12:26,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:12:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 01:12:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-11-30 01:12:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 01:12:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-11-30 01:12:26,032 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 33 [2020-11-30 01:12:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:26,033 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-11-30 01:12:26,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:12:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-11-30 01:12:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-30 01:12:26,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:26,035 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:26,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:26,246 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1144843311, now seen corresponding path program 3 times [2020-11-30 01:12:26,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:26,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965157586] [2020-11-30 01:12:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:26,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965157586] [2020-11-30 01:12:26,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388004222] [2020-11-30 01:12:26,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:26,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-30 01:12:26,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:26,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:12:26,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:26,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:12:26,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2020-11-30 01:12:26,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301303953] [2020-11-30 01:12:26,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:12:26,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:26,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:12:26,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:12:26,562 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 11 states. [2020-11-30 01:12:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:26,667 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-11-30 01:12:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:12:26,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-11-30 01:12:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:26,668 INFO L225 Difference]: With dead ends: 45 [2020-11-30 01:12:26,668 INFO L226 Difference]: Without dead ends: 45 [2020-11-30 01:12:26,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:12:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-30 01:12:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-11-30 01:12:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-30 01:12:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-11-30 01:12:26,682 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 37 [2020-11-30 01:12:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:26,683 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-11-30 01:12:26,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:12:26,683 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-11-30 01:12:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-30 01:12:26,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:26,687 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:26,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:26,902 INFO L429 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:26,903 INFO L82 PathProgramCache]: Analyzing trace with hash -539904914, now seen corresponding path program 4 times [2020-11-30 01:12:26,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:26,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449353604] [2020-11-30 01:12:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:27,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449353604] [2020-11-30 01:12:27,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353149901] [2020-11-30 01:12:27,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:27,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:12:27,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:27,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:12:27,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:27,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:12:27,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2020-11-30 01:12:27,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600040315] [2020-11-30 01:12:27,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:12:27,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:27,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:12:27,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:12:27,165 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 12 states. [2020-11-30 01:12:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:27,248 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-11-30 01:12:27,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:12:27,248 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-11-30 01:12:27,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:27,249 INFO L225 Difference]: With dead ends: 49 [2020-11-30 01:12:27,249 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 01:12:27,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:12:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 01:12:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-11-30 01:12:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 01:12:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-11-30 01:12:27,254 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 41 [2020-11-30 01:12:27,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:27,254 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-11-30 01:12:27,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:12:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-11-30 01:12:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-30 01:12:27,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:27,255 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:27,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:27,456 INFO L429 AbstractCegarLoop]: === Iteration 12 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:27,456 INFO L82 PathProgramCache]: Analyzing trace with hash 607436427, now seen corresponding path program 5 times [2020-11-30 01:12:27,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:27,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379837553] [2020-11-30 01:12:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:27,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379837553] [2020-11-30 01:12:27,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098932620] [2020-11-30 01:12:27,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:27,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-30 01:12:27,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:27,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:12:27,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:27,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:12:27,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2020-11-30 01:12:27,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608996806] [2020-11-30 01:12:27,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 01:12:27,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:27,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:12:27,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:12:27,730 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 13 states. [2020-11-30 01:12:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:27,824 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-11-30 01:12:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:12:27,824 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-11-30 01:12:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:27,825 INFO L225 Difference]: With dead ends: 53 [2020-11-30 01:12:27,825 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 01:12:27,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:12:27,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 01:12:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-11-30 01:12:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-30 01:12:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-11-30 01:12:27,830 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 45 [2020-11-30 01:12:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:27,830 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-11-30 01:12:27,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 01:12:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-11-30 01:12:27,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-30 01:12:27,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:27,831 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:28,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 01:12:28,032 INFO L429 AbstractCegarLoop]: === Iteration 13 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:28,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash 228291112, now seen corresponding path program 6 times [2020-11-30 01:12:28,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:28,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210547526] [2020-11-30 01:12:28,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:12:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:28,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210547526] [2020-11-30 01:12:28,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305971563] [2020-11-30 01:12:28,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/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 01:12:28,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-30 01:12:28,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:28,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:12:28,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:28,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:12:28,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2020-11-30 01:12:28,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946462965] [2020-11-30 01:12:28,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 01:12:28,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:28,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 01:12:28,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:12:28,340 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 14 states. [2020-11-30 01:12:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:28,423 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-11-30 01:12:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:12:28,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-11-30 01:12:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:28,424 INFO L225 Difference]: With dead ends: 54 [2020-11-30 01:12:28,424 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 01:12:28,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:12:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 01:12:28,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-30 01:12:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 01:12:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-11-30 01:12:28,434 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 49 [2020-11-30 01:12:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:28,435 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-11-30 01:12:28,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 01:12:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-11-30 01:12:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 01:12:28,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:28,440 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:28,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:28,662 INFO L429 AbstractCegarLoop]: === Iteration 14 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 01:12:28,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:28,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1223356603, now seen corresponding path program 7 times [2020-11-30 01:12:28,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:28,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18076967] [2020-11-30 01:12:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:28,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:28,716 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:28,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:12:28,748 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:12:28,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 01:12:28,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:12:28 BoogieIcfgContainer [2020-11-30 01:12:28,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:12:28,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:12:28,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:12:28,813 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:12:28,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:22" (3/4) ... [2020-11-30 01:12:28,816 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:12:28,858 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_46115b33-2962-4d1e-8a5f-867a27a1a61e/bin/uautomizer/witness.graphml [2020-11-30 01:12:28,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:12:28,859 INFO L168 Benchmark]: Toolchain (without parser) took 7233.53 ms. Allocated memory was 90.2 MB in the beginning and 151.0 MB in the end (delta: 60.8 MB). Free memory was 61.9 MB in the beginning and 56.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:28,860 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 47.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:28,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.96 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 61.6 MB in the beginning and 104.7 MB in the end (delta: -43.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:28,861 INFO L168 Benchmark]: Boogie Preprocessor took 31.58 ms. Allocated memory is still 125.8 MB. Free memory was 104.7 MB in the beginning and 103.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:28,862 INFO L168 Benchmark]: RCFGBuilder took 354.22 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 89.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:28,862 INFO L168 Benchmark]: TraceAbstraction took 6559.22 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 89.4 MB in the beginning and 58.3 MB in the end (delta: 31.1 MB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:28,863 INFO L168 Benchmark]: Witness Printer took 45.23 ms. Allocated memory is still 151.0 MB. Free memory was 58.3 MB in the beginning and 56.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:28,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 47.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 229.96 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 61.6 MB in the beginning and 104.7 MB in the end (delta: -43.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.58 ms. Allocated memory is still 125.8 MB. Free memory was 104.7 MB in the beginning and 103.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 354.22 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 89.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6559.22 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 89.4 MB in the beginning and 58.3 MB in the end (delta: 31.1 MB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. * Witness Printer took 45.23 ms. Allocated memory is still 151.0 MB. Free memory was 58.3 MB in the beginning and 56.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L13] int n = 0; VAL [a={2:0}, i=0, n=0] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9, a={2:0}, i=0, n=0] [L13] ++n VAL [a={2:0}, i=0, n=1] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2, a={2:0}, i=0, n=1] [L13] ++n VAL [a={2:0}, i=0, n=2] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=3, a={2:0}, i=0, n=2] [L13] ++n VAL [a={2:0}, i=0, n=3] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-3, a={2:0}, i=0, n=3] [L13] ++n VAL [a={2:0}, i=0, n=4] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-4, a={2:0}, i=0, n=4] [L13] ++n VAL [a={2:0}, i=0, n=5] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=5, a={2:0}, i=0, n=5] [L13] ++n VAL [a={2:0}, i=0, n=6] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-5, a={2:0}, i=0, n=6] [L13] ++n VAL [a={2:0}, i=0, n=7] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=6, a={2:0}, i=0, n=7] [L13] ++n VAL [a={2:0}, i=0, n=8] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-6, a={2:0}, i=0, n=8] [L13] ++n VAL [a={2:0}, i=0, n=9] [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=7, a={2:0}, i=0, n=9] [L13] ++n VAL [a={2:0}, i=0, n=10] [L13] COND FALSE !(n < 10) VAL [a={2:0}, i=0, n=10] [L17] 0 <= i && i < 10 && a[i] >= 0 VAL [0 <= i && i < 10 && a[i] >= 0=1, a={2:0}, i=0, n=10] [L17] EXPR a[i] VAL [0 <= i && i < 10 && a[i] >= 0=1, a={2:0}, a[i]=9, i=0, n=10] [L17] 0 <= i && i < 10 && a[i] >= 0 VAL [0 <= i && i < 10 && a[i] >= 0=1, a={2:0}, a[i]=9, i=0, n=10] [L17] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L18] i = __VERIFIER_nondet_int() [L20] a[i] = 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.4s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 195 SDtfs, 208 SDslu, 581 SDs, 0 SdLazy, 608 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 401 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 25 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 710 NumberOfCodeBlocks, 694 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 635 ConstructedInterpolants, 1 QuantifiedInterpolants, 63976 SizeOfPredicates, 7 NumberOfNonLiveVariables, 967 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 58/1126 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...