./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2a1f90505878c0035f7701a954d17ca4375eb05 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:13:42,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:13:42,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:13:42,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:13:42,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:13:42,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:13:42,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:13:42,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:13:42,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:13:42,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:13:42,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:13:42,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:13:42,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:13:42,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:13:42,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:13:42,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:13:42,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:13:42,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:13:42,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:13:42,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:13:42,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:13:42,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:13:42,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:13:42,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:13:42,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:13:42,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:13:42,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:13:42,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:13:42,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:13:42,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:13:42,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:13:42,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:13:42,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:13:42,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:13:42,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:13:42,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:13:42,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:13:42,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:13:42,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:13:42,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:13:42,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:13:42,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 22:13:42,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:13:42,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:13:42,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:13:42,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:13:42,280 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:13:42,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:13:42,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:13:42,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:13:42,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:13:42,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:13:42,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:13:42,281 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 22:13:42,282 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 22:13:42,282 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 22:13:42,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:13:42,282 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 22:13:42,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:13:42,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:13:42,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:13:42,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:13:42,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:13:42,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:13:42,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:13:42,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:13:42,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:13:42,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:13:42,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:13:42,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:13:42,289 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_49d1bc76-0847-4238-beb7-962d22aa897a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a1f90505878c0035f7701a954d17ca4375eb05 [2020-11-29 22:13:42,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:13:42,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:13:42,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:13:42,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:13:42,749 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:13:42,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_7.c [2020-11-29 22:13:42,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/data/fa3fc1428/871ff1178461415e8abafb22e61d5107/FLAG745d522e0 [2020-11-29 22:13:43,603 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:13:43,604 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/sv-benchmarks/c/locks/test_locks_7.c [2020-11-29 22:13:43,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/data/fa3fc1428/871ff1178461415e8abafb22e61d5107/FLAG745d522e0 [2020-11-29 22:13:43,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/data/fa3fc1428/871ff1178461415e8abafb22e61d5107 [2020-11-29 22:13:43,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:13:43,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 22:13:43,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:13:43,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:13:43,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:13:43,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:13:43" (1/1) ... [2020-11-29 22:13:43,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1136bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:43, skipping insertion in model container [2020-11-29 22:13:43,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:13:43" (1/1) ... [2020-11-29 22:13:43,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:13:44,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:13:44,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:13:44,201 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:13:44,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:13:44,250 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:13:44,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44 WrapperNode [2020-11-29 22:13:44,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:13:44,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:13:44,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:13:44,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:13:44,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (1/1) ... [2020-11-29 22:13:44,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (1/1) ... [2020-11-29 22:13:44,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (1/1) ... [2020-11-29 22:13:44,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (1/1) ... [2020-11-29 22:13:44,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (1/1) ... [2020-11-29 22:13:44,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (1/1) ... [2020-11-29 22:13:44,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (1/1) ... [2020-11-29 22:13:44,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:13:44,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:13:44,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:13:44,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:13:44,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/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 [2020-11-29 22:13:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 22:13:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:13:44,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 22:13:44,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 22:13:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 22:13:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 22:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 22:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 22:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 22:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 22:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:13:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:13:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:13:45,000 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:13:45,001 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-29 22:13:45,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:13:45 BoogieIcfgContainer [2020-11-29 22:13:45,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:13:45,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:13:45,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:13:45,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:13:45,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:13:43" (1/3) ... [2020-11-29 22:13:45,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0b3d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:13:45, skipping insertion in model container [2020-11-29 22:13:45,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:13:44" (2/3) ... [2020-11-29 22:13:45,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0b3d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:13:45, skipping insertion in model container [2020-11-29 22:13:45,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:13:45" (3/3) ... [2020-11-29 22:13:45,017 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-11-29 22:13:45,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:13:45,040 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 22:13:45,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 22:13:45,132 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:13:45,136 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 22:13:45,136 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:13:45,136 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:13:45,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:13:45,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:13:45,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:13:45,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:13:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 22:13:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:13:45,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:45,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:45,175 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:45,181 INFO L82 PathProgramCache]: Analyzing trace with hash -374442078, now seen corresponding path program 1 times [2020-11-29 22:13:45,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:45,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029334662] [2020-11-29 22:13:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:45,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:45,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029334662] [2020-11-29 22:13:45,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:45,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:13:45,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824623062] [2020-11-29 22:13:45,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:13:45,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:45,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:13:45,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:13:45,535 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-11-29 22:13:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:45,596 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2020-11-29 22:13:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:13:45,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 22:13:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:45,623 INFO L225 Difference]: With dead ends: 37 [2020-11-29 22:13:45,623 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 22:13:45,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:13:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 22:13:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-29 22:13:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 22:13:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2020-11-29 22:13:45,687 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 52 transitions. Word has length 9 [2020-11-29 22:13:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:45,688 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-11-29 22:13:45,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:13:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 52 transitions. [2020-11-29 22:13:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:13:45,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:45,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:45,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:13:45,691 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1509280444, now seen corresponding path program 1 times [2020-11-29 22:13:45,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:45,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085005773] [2020-11-29 22:13:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:45,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085005773] [2020-11-29 22:13:45,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:45,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:45,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240505582] [2020-11-29 22:13:45,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:45,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:45,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:45,924 INFO L87 Difference]: Start difference. First operand 32 states and 52 transitions. Second operand 4 states. [2020-11-29 22:13:46,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:46,198 INFO L93 Difference]: Finished difference Result 55 states and 94 transitions. [2020-11-29 22:13:46,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:46,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 22:13:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:46,201 INFO L225 Difference]: With dead ends: 55 [2020-11-29 22:13:46,202 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 22:13:46,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:46,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 22:13:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2020-11-29 22:13:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 22:13:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 67 transitions. [2020-11-29 22:13:46,214 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 67 transitions. Word has length 19 [2020-11-29 22:13:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:46,215 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 67 transitions. [2020-11-29 22:13:46,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2020-11-29 22:13:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:13:46,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:46,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:46,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:13:46,217 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash -2084622274, now seen corresponding path program 1 times [2020-11-29 22:13:46,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:46,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195335653] [2020-11-29 22:13:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:46,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195335653] [2020-11-29 22:13:46,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:46,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:46,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149102573] [2020-11-29 22:13:46,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:46,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:46,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:46,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:46,354 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand 4 states. [2020-11-29 22:13:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:46,576 INFO L93 Difference]: Finished difference Result 55 states and 92 transitions. [2020-11-29 22:13:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:46,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 22:13:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:46,580 INFO L225 Difference]: With dead ends: 55 [2020-11-29 22:13:46,580 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 22:13:46,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 22:13:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-11-29 22:13:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 22:13:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 91 transitions. [2020-11-29 22:13:46,599 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 91 transitions. Word has length 19 [2020-11-29 22:13:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:46,600 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 91 transitions. [2020-11-29 22:13:46,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 91 transitions. [2020-11-29 22:13:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:13:46,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:46,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:46,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:13:46,602 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:46,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:46,603 INFO L82 PathProgramCache]: Analyzing trace with hash -450308896, now seen corresponding path program 1 times [2020-11-29 22:13:46,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:46,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5650012] [2020-11-29 22:13:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:46,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:46,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5650012] [2020-11-29 22:13:46,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:46,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:46,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229232173] [2020-11-29 22:13:46,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:46,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:46,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:46,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:46,750 INFO L87 Difference]: Start difference. First operand 54 states and 91 transitions. Second operand 4 states. [2020-11-29 22:13:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:46,944 INFO L93 Difference]: Finished difference Result 58 states and 94 transitions. [2020-11-29 22:13:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:46,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-29 22:13:46,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:46,946 INFO L225 Difference]: With dead ends: 58 [2020-11-29 22:13:46,947 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 22:13:46,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 22:13:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-11-29 22:13:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 22:13:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 93 transitions. [2020-11-29 22:13:46,957 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 93 transitions. Word has length 20 [2020-11-29 22:13:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:46,958 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 93 transitions. [2020-11-29 22:13:46,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 93 transitions. [2020-11-29 22:13:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:13:46,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:46,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:46,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:13:46,960 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:46,961 INFO L82 PathProgramCache]: Analyzing trace with hash -192143458, now seen corresponding path program 1 times [2020-11-29 22:13:46,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:46,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880328425] [2020-11-29 22:13:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:47,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:47,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880328425] [2020-11-29 22:13:47,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:47,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:47,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660924097] [2020-11-29 22:13:47,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:47,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:47,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:47,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:47,104 INFO L87 Difference]: Start difference. First operand 57 states and 93 transitions. Second operand 4 states. [2020-11-29 22:13:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:47,293 INFO L93 Difference]: Finished difference Result 101 states and 167 transitions. [2020-11-29 22:13:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:47,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-29 22:13:47,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:47,296 INFO L225 Difference]: With dead ends: 101 [2020-11-29 22:13:47,296 INFO L226 Difference]: Without dead ends: 101 [2020-11-29 22:13:47,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:47,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-29 22:13:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-11-29 22:13:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-29 22:13:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 166 transitions. [2020-11-29 22:13:47,323 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 166 transitions. Word has length 20 [2020-11-29 22:13:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:47,323 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 166 transitions. [2020-11-29 22:13:47,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 166 transitions. [2020-11-29 22:13:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:13:47,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:47,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:47,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:13:47,327 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:47,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:47,329 INFO L82 PathProgramCache]: Analyzing trace with hash -893208036, now seen corresponding path program 1 times [2020-11-29 22:13:47,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:47,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902999213] [2020-11-29 22:13:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:47,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902999213] [2020-11-29 22:13:47,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:47,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:47,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716428387] [2020-11-29 22:13:47,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:47,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:47,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:47,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:47,454 INFO L87 Difference]: Start difference. First operand 100 states and 166 transitions. Second operand 4 states. [2020-11-29 22:13:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:47,639 INFO L93 Difference]: Finished difference Result 125 states and 209 transitions. [2020-11-29 22:13:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:47,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-29 22:13:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:47,642 INFO L225 Difference]: With dead ends: 125 [2020-11-29 22:13:47,642 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 22:13:47,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 22:13:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 100. [2020-11-29 22:13:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-29 22:13:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 164 transitions. [2020-11-29 22:13:47,656 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 164 transitions. Word has length 20 [2020-11-29 22:13:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:47,656 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 164 transitions. [2020-11-29 22:13:47,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 164 transitions. [2020-11-29 22:13:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:13:47,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:47,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:47,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:13:47,659 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:47,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:47,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1654831735, now seen corresponding path program 1 times [2020-11-29 22:13:47,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:47,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257275057] [2020-11-29 22:13:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:47,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:47,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257275057] [2020-11-29 22:13:47,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:47,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:47,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303934163] [2020-11-29 22:13:47,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:47,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:47,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:47,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:47,759 INFO L87 Difference]: Start difference. First operand 100 states and 164 transitions. Second operand 4 states. [2020-11-29 22:13:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:47,928 INFO L93 Difference]: Finished difference Result 177 states and 295 transitions. [2020-11-29 22:13:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:47,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-29 22:13:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:47,931 INFO L225 Difference]: With dead ends: 177 [2020-11-29 22:13:47,931 INFO L226 Difference]: Without dead ends: 177 [2020-11-29 22:13:47,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-29 22:13:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-11-29 22:13:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 22:13:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 222 transitions. [2020-11-29 22:13:47,955 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 222 transitions. Word has length 21 [2020-11-29 22:13:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:47,955 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 222 transitions. [2020-11-29 22:13:47,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 222 transitions. [2020-11-29 22:13:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:13:47,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:47,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:47,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:13:47,960 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:47,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:47,961 INFO L82 PathProgramCache]: Analyzing trace with hash -953767157, now seen corresponding path program 1 times [2020-11-29 22:13:47,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:47,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108953890] [2020-11-29 22:13:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:48,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108953890] [2020-11-29 22:13:48,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:48,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:48,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075268637] [2020-11-29 22:13:48,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:48,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:48,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:48,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:48,062 INFO L87 Difference]: Start difference. First operand 136 states and 222 transitions. Second operand 4 states. [2020-11-29 22:13:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:48,225 INFO L93 Difference]: Finished difference Result 185 states and 297 transitions. [2020-11-29 22:13:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:48,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-29 22:13:48,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:48,233 INFO L225 Difference]: With dead ends: 185 [2020-11-29 22:13:48,233 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 22:13:48,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 22:13:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2020-11-29 22:13:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-29 22:13:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 296 transitions. [2020-11-29 22:13:48,265 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 296 transitions. Word has length 21 [2020-11-29 22:13:48,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:48,266 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 296 transitions. [2020-11-29 22:13:48,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 296 transitions. [2020-11-29 22:13:48,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:13:48,271 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:48,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:48,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 22:13:48,272 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:48,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:48,273 INFO L82 PathProgramCache]: Analyzing trace with hash 246482505, now seen corresponding path program 1 times [2020-11-29 22:13:48,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:48,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213493080] [2020-11-29 22:13:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:48,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213493080] [2020-11-29 22:13:48,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:48,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:48,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702498356] [2020-11-29 22:13:48,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:48,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:48,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:48,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:48,348 INFO L87 Difference]: Start difference. First operand 184 states and 296 transitions. Second operand 4 states. [2020-11-29 22:13:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:48,481 INFO L93 Difference]: Finished difference Result 191 states and 301 transitions. [2020-11-29 22:13:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:48,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 22:13:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:48,483 INFO L225 Difference]: With dead ends: 191 [2020-11-29 22:13:48,483 INFO L226 Difference]: Without dead ends: 191 [2020-11-29 22:13:48,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-29 22:13:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2020-11-29 22:13:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-11-29 22:13:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 300 transitions. [2020-11-29 22:13:48,494 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 300 transitions. Word has length 22 [2020-11-29 22:13:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:48,495 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 300 transitions. [2020-11-29 22:13:48,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 300 transitions. [2020-11-29 22:13:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:13:48,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:48,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:48,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 22:13:48,497 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:48,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:48,497 INFO L82 PathProgramCache]: Analyzing trace with hash 504647943, now seen corresponding path program 1 times [2020-11-29 22:13:48,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:48,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657764428] [2020-11-29 22:13:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:48,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:48,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657764428] [2020-11-29 22:13:48,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:48,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:48,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647725318] [2020-11-29 22:13:48,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:48,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:48,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:48,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:48,586 INFO L87 Difference]: Start difference. First operand 190 states and 300 transitions. Second operand 4 states. [2020-11-29 22:13:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:48,702 INFO L93 Difference]: Finished difference Result 331 states and 525 transitions. [2020-11-29 22:13:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:48,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 22:13:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:48,706 INFO L225 Difference]: With dead ends: 331 [2020-11-29 22:13:48,706 INFO L226 Difference]: Without dead ends: 331 [2020-11-29 22:13:48,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-11-29 22:13:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 266. [2020-11-29 22:13:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-29 22:13:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 412 transitions. [2020-11-29 22:13:48,720 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 412 transitions. Word has length 22 [2020-11-29 22:13:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:48,721 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 412 transitions. [2020-11-29 22:13:48,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 412 transitions. [2020-11-29 22:13:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:13:48,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:48,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:48,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 22:13:48,729 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:48,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1205712521, now seen corresponding path program 1 times [2020-11-29 22:13:48,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:48,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065383788] [2020-11-29 22:13:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:48,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:48,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065383788] [2020-11-29 22:13:48,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:48,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:48,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415795003] [2020-11-29 22:13:48,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:48,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:48,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:48,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:48,809 INFO L87 Difference]: Start difference. First operand 266 states and 412 transitions. Second operand 4 states. [2020-11-29 22:13:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:48,951 INFO L93 Difference]: Finished difference Result 355 states and 537 transitions. [2020-11-29 22:13:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:48,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 22:13:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:48,955 INFO L225 Difference]: With dead ends: 355 [2020-11-29 22:13:48,955 INFO L226 Difference]: Without dead ends: 355 [2020-11-29 22:13:48,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-11-29 22:13:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2020-11-29 22:13:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-11-29 22:13:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 536 transitions. [2020-11-29 22:13:48,967 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 536 transitions. Word has length 22 [2020-11-29 22:13:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:48,967 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 536 transitions. [2020-11-29 22:13:48,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 536 transitions. [2020-11-29 22:13:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:13:48,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:48,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:48,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 22:13:48,969 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:48,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:48,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1529113642, now seen corresponding path program 1 times [2020-11-29 22:13:48,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:48,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857282589] [2020-11-29 22:13:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:49,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857282589] [2020-11-29 22:13:49,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:49,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:49,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324982983] [2020-11-29 22:13:49,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:49,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:49,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:49,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:49,021 INFO L87 Difference]: Start difference. First operand 354 states and 536 transitions. Second operand 4 states. [2020-11-29 22:13:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:49,139 INFO L93 Difference]: Finished difference Result 363 states and 537 transitions. [2020-11-29 22:13:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:49,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 22:13:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:49,142 INFO L225 Difference]: With dead ends: 363 [2020-11-29 22:13:49,142 INFO L226 Difference]: Without dead ends: 363 [2020-11-29 22:13:49,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-11-29 22:13:49,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 362. [2020-11-29 22:13:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-11-29 22:13:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 536 transitions. [2020-11-29 22:13:49,155 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 536 transitions. Word has length 23 [2020-11-29 22:13:49,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:49,157 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 536 transitions. [2020-11-29 22:13:49,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 536 transitions. [2020-11-29 22:13:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:13:49,159 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:49,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:49,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 22:13:49,160 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:49,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:49,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1270948204, now seen corresponding path program 1 times [2020-11-29 22:13:49,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:49,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650345753] [2020-11-29 22:13:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:49,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650345753] [2020-11-29 22:13:49,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:49,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:49,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885236095] [2020-11-29 22:13:49,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:49,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:49,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:49,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:49,234 INFO L87 Difference]: Start difference. First operand 362 states and 536 transitions. Second operand 4 states. [2020-11-29 22:13:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:49,387 INFO L93 Difference]: Finished difference Result 619 states and 913 transitions. [2020-11-29 22:13:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:49,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 22:13:49,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:49,391 INFO L225 Difference]: With dead ends: 619 [2020-11-29 22:13:49,392 INFO L226 Difference]: Without dead ends: 619 [2020-11-29 22:13:49,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-11-29 22:13:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 522. [2020-11-29 22:13:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-11-29 22:13:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 752 transitions. [2020-11-29 22:13:49,408 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 752 transitions. Word has length 23 [2020-11-29 22:13:49,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:49,409 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 752 transitions. [2020-11-29 22:13:49,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 752 transitions. [2020-11-29 22:13:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:13:49,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:49,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:49,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 22:13:49,410 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:49,411 INFO L82 PathProgramCache]: Analyzing trace with hash -569883626, now seen corresponding path program 1 times [2020-11-29 22:13:49,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:49,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534895053] [2020-11-29 22:13:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:49,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534895053] [2020-11-29 22:13:49,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:49,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:49,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234455803] [2020-11-29 22:13:49,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:49,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:49,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:49,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:49,462 INFO L87 Difference]: Start difference. First operand 522 states and 752 transitions. Second operand 4 states. [2020-11-29 22:13:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:49,610 INFO L93 Difference]: Finished difference Result 683 states and 953 transitions. [2020-11-29 22:13:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:49,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 22:13:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:49,616 INFO L225 Difference]: With dead ends: 683 [2020-11-29 22:13:49,616 INFO L226 Difference]: Without dead ends: 683 [2020-11-29 22:13:49,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-11-29 22:13:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 682. [2020-11-29 22:13:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-11-29 22:13:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 952 transitions. [2020-11-29 22:13:49,638 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 952 transitions. Word has length 23 [2020-11-29 22:13:49,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:49,638 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 952 transitions. [2020-11-29 22:13:49,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 952 transitions. [2020-11-29 22:13:49,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:13:49,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:49,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:49,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 22:13:49,640 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:49,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:49,641 INFO L82 PathProgramCache]: Analyzing trace with hash -738008780, now seen corresponding path program 1 times [2020-11-29 22:13:49,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:49,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931740585] [2020-11-29 22:13:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:49,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931740585] [2020-11-29 22:13:49,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:49,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:49,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969770958] [2020-11-29 22:13:49,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:49,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:49,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:49,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:49,704 INFO L87 Difference]: Start difference. First operand 682 states and 952 transitions. Second operand 4 states. [2020-11-29 22:13:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:49,840 INFO L93 Difference]: Finished difference Result 699 states and 953 transitions. [2020-11-29 22:13:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:49,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 22:13:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:49,845 INFO L225 Difference]: With dead ends: 699 [2020-11-29 22:13:49,845 INFO L226 Difference]: Without dead ends: 699 [2020-11-29 22:13:49,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-11-29 22:13:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 698. [2020-11-29 22:13:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2020-11-29 22:13:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 952 transitions. [2020-11-29 22:13:49,868 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 952 transitions. Word has length 24 [2020-11-29 22:13:49,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:49,869 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 952 transitions. [2020-11-29 22:13:49,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:49,869 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 952 transitions. [2020-11-29 22:13:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:13:49,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:49,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:49,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 22:13:49,876 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:49,876 INFO L82 PathProgramCache]: Analyzing trace with hash -479843342, now seen corresponding path program 1 times [2020-11-29 22:13:49,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:49,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601706814] [2020-11-29 22:13:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:49,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601706814] [2020-11-29 22:13:49,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:49,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:49,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655550720] [2020-11-29 22:13:49,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:49,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:49,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:49,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:49,933 INFO L87 Difference]: Start difference. First operand 698 states and 952 transitions. Second operand 4 states. [2020-11-29 22:13:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:50,067 INFO L93 Difference]: Finished difference Result 1163 states and 1561 transitions. [2020-11-29 22:13:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:50,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 22:13:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:50,075 INFO L225 Difference]: With dead ends: 1163 [2020-11-29 22:13:50,075 INFO L226 Difference]: Without dead ends: 1163 [2020-11-29 22:13:50,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:50,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-11-29 22:13:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1034. [2020-11-29 22:13:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-11-29 22:13:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1368 transitions. [2020-11-29 22:13:50,108 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1368 transitions. Word has length 24 [2020-11-29 22:13:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:50,108 INFO L481 AbstractCegarLoop]: Abstraction has 1034 states and 1368 transitions. [2020-11-29 22:13:50,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1368 transitions. [2020-11-29 22:13:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:13:50,111 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:50,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:50,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 22:13:50,111 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:50,112 INFO L82 PathProgramCache]: Analyzing trace with hash 221221236, now seen corresponding path program 1 times [2020-11-29 22:13:50,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:50,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123143291] [2020-11-29 22:13:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:50,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123143291] [2020-11-29 22:13:50,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:50,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:50,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507073429] [2020-11-29 22:13:50,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:50,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:50,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:50,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:50,209 INFO L87 Difference]: Start difference. First operand 1034 states and 1368 transitions. Second operand 4 states. [2020-11-29 22:13:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:50,360 INFO L93 Difference]: Finished difference Result 1323 states and 1673 transitions. [2020-11-29 22:13:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:50,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 22:13:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:50,368 INFO L225 Difference]: With dead ends: 1323 [2020-11-29 22:13:50,368 INFO L226 Difference]: Without dead ends: 1323 [2020-11-29 22:13:50,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-11-29 22:13:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1322. [2020-11-29 22:13:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1322 states. [2020-11-29 22:13:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1672 transitions. [2020-11-29 22:13:50,403 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1672 transitions. Word has length 24 [2020-11-29 22:13:50,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:50,404 INFO L481 AbstractCegarLoop]: Abstraction has 1322 states and 1672 transitions. [2020-11-29 22:13:50,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1672 transitions. [2020-11-29 22:13:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:13:50,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:50,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:50,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 22:13:50,406 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1983551263, now seen corresponding path program 1 times [2020-11-29 22:13:50,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:50,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396164953] [2020-11-29 22:13:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:50,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:50,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396164953] [2020-11-29 22:13:50,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:50,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:50,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895529299] [2020-11-29 22:13:50,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:50,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:50,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:50,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:50,461 INFO L87 Difference]: Start difference. First operand 1322 states and 1672 transitions. Second operand 4 states. [2020-11-29 22:13:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:50,584 INFO L93 Difference]: Finished difference Result 1355 states and 1673 transitions. [2020-11-29 22:13:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:50,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 22:13:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:50,591 INFO L225 Difference]: With dead ends: 1355 [2020-11-29 22:13:50,592 INFO L226 Difference]: Without dead ends: 1355 [2020-11-29 22:13:50,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-11-29 22:13:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1354. [2020-11-29 22:13:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1354 states. [2020-11-29 22:13:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1672 transitions. [2020-11-29 22:13:50,624 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1672 transitions. Word has length 25 [2020-11-29 22:13:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:50,625 INFO L481 AbstractCegarLoop]: Abstraction has 1354 states and 1672 transitions. [2020-11-29 22:13:50,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1672 transitions. [2020-11-29 22:13:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:13:50,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:50,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:50,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 22:13:50,628 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:50,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1725385825, now seen corresponding path program 1 times [2020-11-29 22:13:50,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:50,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679436428] [2020-11-29 22:13:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:50,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679436428] [2020-11-29 22:13:50,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:50,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:50,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186819150] [2020-11-29 22:13:50,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:50,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:50,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:50,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:50,676 INFO L87 Difference]: Start difference. First operand 1354 states and 1672 transitions. Second operand 4 states. [2020-11-29 22:13:50,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:50,808 INFO L93 Difference]: Finished difference Result 2186 states and 2600 transitions. [2020-11-29 22:13:50,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:50,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 22:13:50,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:50,821 INFO L225 Difference]: With dead ends: 2186 [2020-11-29 22:13:50,822 INFO L226 Difference]: Without dead ends: 2186 [2020-11-29 22:13:50,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2020-11-29 22:13:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2058. [2020-11-29 22:13:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2058 states. [2020-11-29 22:13:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2472 transitions. [2020-11-29 22:13:50,891 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2472 transitions. Word has length 25 [2020-11-29 22:13:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:50,892 INFO L481 AbstractCegarLoop]: Abstraction has 2058 states and 2472 transitions. [2020-11-29 22:13:50,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2472 transitions. [2020-11-29 22:13:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:13:50,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:13:50,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:13:50,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 22:13:50,896 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:13:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:13:50,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1024321247, now seen corresponding path program 1 times [2020-11-29 22:13:50,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:13:50,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681321179] [2020-11-29 22:13:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:13:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:13:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:13:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:13:50,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681321179] [2020-11-29 22:13:50,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:13:50,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:13:50,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379011273] [2020-11-29 22:13:50,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:13:50,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:13:50,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:13:50,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:13:50,956 INFO L87 Difference]: Start difference. First operand 2058 states and 2472 transitions. Second operand 4 states. [2020-11-29 22:13:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:13:51,085 INFO L93 Difference]: Finished difference Result 2567 states and 2886 transitions. [2020-11-29 22:13:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:13:51,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 22:13:51,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:13:51,086 INFO L225 Difference]: With dead ends: 2567 [2020-11-29 22:13:51,086 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:13:51,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:13:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:13:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:13:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:13:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:13:51,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-29 22:13:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:13:51,087 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:13:51,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:13:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:13:51,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:13:51,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 22:13:51,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:13:51 BoogieIcfgContainer [2020-11-29 22:13:51,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:13:51,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:13:51,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:13:51,093 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:13:51,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:13:45" (3/4) ... [2020-11-29 22:13:51,097 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:13:51,104 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-29 22:13:51,104 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 22:13:51,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 22:13:51,114 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 22:13:51,114 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:13:51,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 22:13:51,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:13:51,180 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_49d1bc76-0847-4238-beb7-962d22aa897a/bin/uautomizer/witness.graphml [2020-11-29 22:13:51,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:13:51,182 INFO L168 Benchmark]: Toolchain (without parser) took 7237.85 ms. Allocated memory was 109.1 MB in the beginning and 180.4 MB in the end (delta: 71.3 MB). Free memory was 81.2 MB in the beginning and 107.2 MB in the end (delta: -26.0 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:13:51,182 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 75.5 MB. Free memory was 42.7 MB in the beginning and 42.7 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:13:51,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.14 ms. Allocated memory is still 109.1 MB. Free memory was 81.0 MB in the beginning and 71.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:13:51,183 INFO L168 Benchmark]: Boogie Preprocessor took 63.14 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 69.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:13:51,183 INFO L168 Benchmark]: RCFGBuilder took 686.87 ms. Allocated memory is still 109.1 MB. Free memory was 69.5 MB in the beginning and 51.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:13:51,184 INFO L168 Benchmark]: TraceAbstraction took 6085.96 ms. Allocated memory was 109.1 MB in the beginning and 180.4 MB in the end (delta: 71.3 MB). Free memory was 51.4 MB in the beginning and 111.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:13:51,184 INFO L168 Benchmark]: Witness Printer took 87.46 ms. Allocated memory is still 180.4 MB. Free memory was 110.3 MB in the beginning and 107.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:13:51,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 75.5 MB. Free memory was 42.7 MB in the beginning and 42.7 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.14 ms. Allocated memory is still 109.1 MB. Free memory was 81.0 MB in the beginning and 71.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.14 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 69.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 686.87 ms. Allocated memory is still 109.1 MB. Free memory was 69.5 MB in the beginning and 51.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6085.96 ms. Allocated memory was 109.1 MB in the beginning and 180.4 MB in the end (delta: 71.3 MB). Free memory was 51.4 MB in the beginning and 111.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 87.46 ms. Allocated memory is still 180.4 MB. Free memory was 110.3 MB in the beginning and 107.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1252 SDtfs, 1714 SDslu, 147 SDs, 0 SdLazy, 866 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2058occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 511 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 431 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 411 ConstructedInterpolants, 0 QuantifiedInterpolants, 27714 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...