./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_6.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_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/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 8a6bc1adbcafb13db44c5d4b4826990150e2f336 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:25,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:25,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:26,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:26,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:26,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:26,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:26,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:26,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:26,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:26,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:26,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:26,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:26,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:26,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:26,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:26,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:26,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:26,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:26,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:26,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:26,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:26,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:26,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:26,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:26,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:26,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:26,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:26,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:26,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:26,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:26,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:26,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:26,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:26,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:26,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:26,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:26,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:26,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:26,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:26,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:26,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:56:26,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:26,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:26,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:26,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:26,143 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:26,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:26,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:26,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:26,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:26,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:26,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:26,145 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:56:26,145 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:56:26,145 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:56:26,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:26,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:56:26,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:26,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:26,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:26,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:26,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:26,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:26,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:26,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:26,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:26,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:26,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:26,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:26,148 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_8a8d84e2-55e9-42d5-96c0-f384a62adea2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6bc1adbcafb13db44c5d4b4826990150e2f336 [2020-11-28 02:56:26,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:26,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:26,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:26,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:26,461 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:26,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_6.c [2020-11-28 02:56:26,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/data/d40f38e84/fbf008c0709b4b54bcc30c8b9d1ef296/FLAG851d8f681 [2020-11-28 02:56:26,956 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:26,956 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/sv-benchmarks/c/locks/test_locks_6.c [2020-11-28 02:56:26,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/data/d40f38e84/fbf008c0709b4b54bcc30c8b9d1ef296/FLAG851d8f681 [2020-11-28 02:56:27,352 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/data/d40f38e84/fbf008c0709b4b54bcc30c8b9d1ef296 [2020-11-28 02:56:27,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:27,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:56:27,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:27,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:27,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:27,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4605d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27, skipping insertion in model container [2020-11-28 02:56:27,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:27,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:27,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:27,564 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:27,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:27,598 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:27,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27 WrapperNode [2020-11-28 02:56:27,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:27,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:27,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:27,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:27,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (1/1) ... [2020-11-28 02:56:27,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:27,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:27,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:27,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:27,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:56:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 02:56:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:56:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:56:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 02:56:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 02:56:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:56:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:56:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:56:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:28,089 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:28,090 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-28 02:56:28,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:28 BoogieIcfgContainer [2020-11-28 02:56:28,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:28,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:28,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:28,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:28,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:27" (1/3) ... [2020-11-28 02:56:28,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530f7119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:28, skipping insertion in model container [2020-11-28 02:56:28,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:27" (2/3) ... [2020-11-28 02:56:28,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530f7119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:28, skipping insertion in model container [2020-11-28 02:56:28,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:28" (3/3) ... [2020-11-28 02:56:28,099 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-11-28 02:56:28,111 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:28,127 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:56:28,141 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 02:56:28,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:28,188 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:56:28,188 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:28,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:28,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:28,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:28,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:28,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-28 02:56:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:56:28,223 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:28,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:28,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:28,230 INFO L82 PathProgramCache]: Analyzing trace with hash -214899584, now seen corresponding path program 1 times [2020-11-28 02:56:28,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:28,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022301994] [2020-11-28 02:56:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:28,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:28,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022301994] [2020-11-28 02:56:28,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:28,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:28,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176560812] [2020-11-28 02:56:28,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:28,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:28,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:28,537 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-11-28 02:56:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:28,583 INFO L93 Difference]: Finished difference Result 34 states and 51 transitions. [2020-11-28 02:56:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:28,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:56:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:28,595 INFO L225 Difference]: With dead ends: 34 [2020-11-28 02:56:28,596 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 02:56:28,604 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 [2020-11-28 02:56:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 02:56:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 02:56:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 02:56:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 46 transitions. [2020-11-28 02:56:28,646 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 46 transitions. Word has length 9 [2020-11-28 02:56:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:28,646 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 46 transitions. [2020-11-28 02:56:28,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2020-11-28 02:56:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:56:28,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:28,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:28,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:28,647 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:28,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:28,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2113178603, now seen corresponding path program 1 times [2020-11-28 02:56:28,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:28,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718141612] [2020-11-28 02:56:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:28,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:28,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718141612] [2020-11-28 02:56:28,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:28,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:28,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716850191] [2020-11-28 02:56:28,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:28,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:28,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:28,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:28,810 INFO L87 Difference]: Start difference. First operand 29 states and 46 transitions. Second operand 4 states. [2020-11-28 02:56:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:29,009 INFO L93 Difference]: Finished difference Result 49 states and 82 transitions. [2020-11-28 02:56:29,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:29,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 02:56:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:29,012 INFO L225 Difference]: With dead ends: 49 [2020-11-28 02:56:29,012 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 02:56:29,012 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 [2020-11-28 02:56:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 02:56:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2020-11-28 02:56:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:56:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 59 transitions. [2020-11-28 02:56:29,020 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 59 transitions. Word has length 18 [2020-11-28 02:56:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:29,021 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 59 transitions. [2020-11-28 02:56:29,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 59 transitions. [2020-11-28 02:56:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:56:29,022 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:29,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:29,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:29,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1788761683, now seen corresponding path program 1 times [2020-11-28 02:56:29,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445048567] [2020-11-28 02:56:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:29,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445048567] [2020-11-28 02:56:29,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:29,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:29,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571266587] [2020-11-28 02:56:29,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:29,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:29,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:29,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:29,144 INFO L87 Difference]: Start difference. First operand 36 states and 59 transitions. Second operand 4 states. [2020-11-28 02:56:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:29,319 INFO L93 Difference]: Finished difference Result 49 states and 80 transitions. [2020-11-28 02:56:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:29,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 02:56:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:29,322 INFO L225 Difference]: With dead ends: 49 [2020-11-28 02:56:29,322 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 02:56:29,322 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 [2020-11-28 02:56:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 02:56:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-11-28 02:56:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 02:56:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 79 transitions. [2020-11-28 02:56:29,331 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 79 transitions. Word has length 18 [2020-11-28 02:56:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:29,332 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 79 transitions. [2020-11-28 02:56:29,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 79 transitions. [2020-11-28 02:56:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:56:29,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:29,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:29,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:29,336 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1077379613, now seen corresponding path program 1 times [2020-11-28 02:56:29,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562707750] [2020-11-28 02:56:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:29,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562707750] [2020-11-28 02:56:29,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:29,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:29,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798924594] [2020-11-28 02:56:29,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:29,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:29,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:29,461 INFO L87 Difference]: Start difference. First operand 48 states and 79 transitions. Second operand 4 states. [2020-11-28 02:56:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:29,605 INFO L93 Difference]: Finished difference Result 52 states and 82 transitions. [2020-11-28 02:56:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:29,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 02:56:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:29,607 INFO L225 Difference]: With dead ends: 52 [2020-11-28 02:56:29,607 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 02:56:29,607 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 [2020-11-28 02:56:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 02:56:29,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-11-28 02:56:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 02:56:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 81 transitions. [2020-11-28 02:56:29,619 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 81 transitions. Word has length 19 [2020-11-28 02:56:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:29,620 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 81 transitions. [2020-11-28 02:56:29,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 81 transitions. [2020-11-28 02:56:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:56:29,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:29,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:29,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:56:29,624 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash -376315035, now seen corresponding path program 1 times [2020-11-28 02:56:29,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766314768] [2020-11-28 02:56:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:29,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766314768] [2020-11-28 02:56:29,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:29,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:29,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827670841] [2020-11-28 02:56:29,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:29,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:29,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:29,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:29,743 INFO L87 Difference]: Start difference. First operand 51 states and 81 transitions. Second operand 4 states. [2020-11-28 02:56:29,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:29,865 INFO L93 Difference]: Finished difference Result 89 states and 143 transitions. [2020-11-28 02:56:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:29,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 02:56:29,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:29,867 INFO L225 Difference]: With dead ends: 89 [2020-11-28 02:56:29,867 INFO L226 Difference]: Without dead ends: 89 [2020-11-28 02:56:29,868 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 [2020-11-28 02:56:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-28 02:56:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-11-28 02:56:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-28 02:56:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 142 transitions. [2020-11-28 02:56:29,886 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 142 transitions. Word has length 19 [2020-11-28 02:56:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:29,886 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 142 transitions. [2020-11-28 02:56:29,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 142 transitions. [2020-11-28 02:56:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:56:29,889 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:29,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:29,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:56:29,890 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,891 INFO L82 PathProgramCache]: Analyzing trace with hash 16711975, now seen corresponding path program 1 times [2020-11-28 02:56:29,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757996469] [2020-11-28 02:56:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:29,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757996469] [2020-11-28 02:56:29,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:29,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:29,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980866108] [2020-11-28 02:56:29,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:29,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:29,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:29,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:29,994 INFO L87 Difference]: Start difference. First operand 88 states and 142 transitions. Second operand 4 states. [2020-11-28 02:56:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,116 INFO L93 Difference]: Finished difference Result 109 states and 177 transitions. [2020-11-28 02:56:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:30,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 02:56:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,118 INFO L225 Difference]: With dead ends: 109 [2020-11-28 02:56:30,118 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 02:56:30,118 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 [2020-11-28 02:56:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 02:56:30,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 88. [2020-11-28 02:56:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-28 02:56:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 140 transitions. [2020-11-28 02:56:30,133 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 140 transitions. Word has length 19 [2020-11-28 02:56:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,134 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 140 transitions. [2020-11-28 02:56:30,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 140 transitions. [2020-11-28 02:56:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:56:30,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,138 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] [2020-11-28 02:56:30,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:56:30,139 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:30,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1225794014, now seen corresponding path program 1 times [2020-11-28 02:56:30,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160690140] [2020-11-28 02:56:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160690140] [2020-11-28 02:56:30,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:30,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789775266] [2020-11-28 02:56:30,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:30,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:30,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:30,224 INFO L87 Difference]: Start difference. First operand 88 states and 140 transitions. Second operand 4 states. [2020-11-28 02:56:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,383 INFO L93 Difference]: Finished difference Result 153 states and 247 transitions. [2020-11-28 02:56:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:30,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-28 02:56:30,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,385 INFO L225 Difference]: With dead ends: 153 [2020-11-28 02:56:30,385 INFO L226 Difference]: Without dead ends: 153 [2020-11-28 02:56:30,386 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 [2020-11-28 02:56:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-28 02:56:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-11-28 02:56:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 02:56:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 190 transitions. [2020-11-28 02:56:30,404 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 190 transitions. Word has length 20 [2020-11-28 02:56:30,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,404 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 190 transitions. [2020-11-28 02:56:30,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:30,405 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 190 transitions. [2020-11-28 02:56:30,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:56:30,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,406 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] [2020-11-28 02:56:30,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:56:30,406 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,407 INFO L82 PathProgramCache]: Analyzing trace with hash 832767004, now seen corresponding path program 1 times [2020-11-28 02:56:30,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677172649] [2020-11-28 02:56:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677172649] [2020-11-28 02:56:30,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:30,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389816254] [2020-11-28 02:56:30,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:30,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:30,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:30,486 INFO L87 Difference]: Start difference. First operand 120 states and 190 transitions. Second operand 4 states. [2020-11-28 02:56:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,626 INFO L93 Difference]: Finished difference Result 161 states and 249 transitions. [2020-11-28 02:56:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:30,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-28 02:56:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,628 INFO L225 Difference]: With dead ends: 161 [2020-11-28 02:56:30,629 INFO L226 Difference]: Without dead ends: 161 [2020-11-28 02:56:30,629 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 [2020-11-28 02:56:30,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-28 02:56:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2020-11-28 02:56:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-28 02:56:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 248 transitions. [2020-11-28 02:56:30,654 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 248 transitions. Word has length 20 [2020-11-28 02:56:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,656 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 248 transitions. [2020-11-28 02:56:30,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 248 transitions. [2020-11-28 02:56:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:56:30,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,659 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] [2020-11-28 02:56:30,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:56:30,660 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,660 INFO L82 PathProgramCache]: Analyzing trace with hash -648422448, now seen corresponding path program 1 times [2020-11-28 02:56:30,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243303124] [2020-11-28 02:56:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243303124] [2020-11-28 02:56:30,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:30,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300929796] [2020-11-28 02:56:30,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:30,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:30,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:30,733 INFO L87 Difference]: Start difference. First operand 160 states and 248 transitions. Second operand 4 states. [2020-11-28 02:56:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,855 INFO L93 Difference]: Finished difference Result 167 states and 253 transitions. [2020-11-28 02:56:30,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:30,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 02:56:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,857 INFO L225 Difference]: With dead ends: 167 [2020-11-28 02:56:30,857 INFO L226 Difference]: Without dead ends: 167 [2020-11-28 02:56:30,857 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 [2020-11-28 02:56:30,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-28 02:56:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2020-11-28 02:56:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-28 02:56:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 252 transitions. [2020-11-28 02:56:30,866 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 252 transitions. Word has length 21 [2020-11-28 02:56:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,866 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 252 transitions. [2020-11-28 02:56:30,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 252 transitions. [2020-11-28 02:56:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:56:30,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,881 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] [2020-11-28 02:56:30,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:56:30,881 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,882 INFO L82 PathProgramCache]: Analyzing trace with hash 52642130, now seen corresponding path program 1 times [2020-11-28 02:56:30,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405345005] [2020-11-28 02:56:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405345005] [2020-11-28 02:56:30,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:30,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530886844] [2020-11-28 02:56:30,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:30,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:30,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:30,972 INFO L87 Difference]: Start difference. First operand 166 states and 252 transitions. Second operand 4 states. [2020-11-28 02:56:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:31,105 INFO L93 Difference]: Finished difference Result 283 states and 429 transitions. [2020-11-28 02:56:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:31,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 02:56:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:31,108 INFO L225 Difference]: With dead ends: 283 [2020-11-28 02:56:31,108 INFO L226 Difference]: Without dead ends: 283 [2020-11-28 02:56:31,108 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 [2020-11-28 02:56:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-28 02:56:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2020-11-28 02:56:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-28 02:56:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 348 transitions. [2020-11-28 02:56:31,145 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 348 transitions. Word has length 21 [2020-11-28 02:56:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:31,145 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 348 transitions. [2020-11-28 02:56:31,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 348 transitions. [2020-11-28 02:56:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:56:31,146 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:31,146 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] [2020-11-28 02:56:31,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:56:31,147 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:31,147 INFO L82 PathProgramCache]: Analyzing trace with hash -340384880, now seen corresponding path program 1 times [2020-11-28 02:56:31,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:31,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363982965] [2020-11-28 02:56:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:31,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363982965] [2020-11-28 02:56:31,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:31,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:31,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568101382] [2020-11-28 02:56:31,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:31,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:31,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:31,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,212 INFO L87 Difference]: Start difference. First operand 234 states and 348 transitions. Second operand 4 states. [2020-11-28 02:56:31,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:31,345 INFO L93 Difference]: Finished difference Result 307 states and 441 transitions. [2020-11-28 02:56:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:31,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 02:56:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:31,348 INFO L225 Difference]: With dead ends: 307 [2020-11-28 02:56:31,348 INFO L226 Difference]: Without dead ends: 307 [2020-11-28 02:56:31,348 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 [2020-11-28 02:56:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-11-28 02:56:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2020-11-28 02:56:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-11-28 02:56:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 440 transitions. [2020-11-28 02:56:31,359 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 440 transitions. Word has length 21 [2020-11-28 02:56:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:31,359 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 440 transitions. [2020-11-28 02:56:31,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 440 transitions. [2020-11-28 02:56:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:31,362 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:31,363 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] [2020-11-28 02:56:31,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 02:56:31,363 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:31,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1638585383, now seen corresponding path program 1 times [2020-11-28 02:56:31,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:31,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77109843] [2020-11-28 02:56:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:31,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77109843] [2020-11-28 02:56:31,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:31,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:31,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042800980] [2020-11-28 02:56:31,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:31,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:31,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:31,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,444 INFO L87 Difference]: Start difference. First operand 306 states and 440 transitions. Second operand 4 states. [2020-11-28 02:56:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:31,559 INFO L93 Difference]: Finished difference Result 315 states and 441 transitions. [2020-11-28 02:56:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:31,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 02:56:31,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:31,561 INFO L225 Difference]: With dead ends: 315 [2020-11-28 02:56:31,561 INFO L226 Difference]: Without dead ends: 315 [2020-11-28 02:56:31,561 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 [2020-11-28 02:56:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-11-28 02:56:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 314. [2020-11-28 02:56:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-11-28 02:56:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 440 transitions. [2020-11-28 02:56:31,572 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 440 transitions. Word has length 22 [2020-11-28 02:56:31,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:31,573 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 440 transitions. [2020-11-28 02:56:31,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:31,573 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 440 transitions. [2020-11-28 02:56:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:31,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:31,574 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] [2020-11-28 02:56:31,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 02:56:31,574 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:31,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:31,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1955317335, now seen corresponding path program 1 times [2020-11-28 02:56:31,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:31,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422877797] [2020-11-28 02:56:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:31,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422877797] [2020-11-28 02:56:31,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:31,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:31,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952837807] [2020-11-28 02:56:31,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:31,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:31,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:31,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,663 INFO L87 Difference]: Start difference. First operand 314 states and 440 transitions. Second operand 4 states. [2020-11-28 02:56:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:31,829 INFO L93 Difference]: Finished difference Result 523 states and 721 transitions. [2020-11-28 02:56:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:31,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 02:56:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:31,833 INFO L225 Difference]: With dead ends: 523 [2020-11-28 02:56:31,833 INFO L226 Difference]: Without dead ends: 523 [2020-11-28 02:56:31,834 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 [2020-11-28 02:56:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-11-28 02:56:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 458. [2020-11-28 02:56:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-11-28 02:56:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 624 transitions. [2020-11-28 02:56:31,850 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 624 transitions. Word has length 22 [2020-11-28 02:56:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:31,850 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 624 transitions. [2020-11-28 02:56:31,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 624 transitions. [2020-11-28 02:56:31,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:31,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:31,852 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] [2020-11-28 02:56:31,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 02:56:31,853 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:31,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:31,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1946622951, now seen corresponding path program 1 times [2020-11-28 02:56:31,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:31,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749354583] [2020-11-28 02:56:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:31,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749354583] [2020-11-28 02:56:31,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:31,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:31,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539177086] [2020-11-28 02:56:31,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:31,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:31,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:31,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,912 INFO L87 Difference]: Start difference. First operand 458 states and 624 transitions. Second operand 4 states. [2020-11-28 02:56:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:32,033 INFO L93 Difference]: Finished difference Result 587 states and 761 transitions. [2020-11-28 02:56:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:32,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 02:56:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:32,037 INFO L225 Difference]: With dead ends: 587 [2020-11-28 02:56:32,037 INFO L226 Difference]: Without dead ends: 587 [2020-11-28 02:56:32,038 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 [2020-11-28 02:56:32,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-11-28 02:56:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 586. [2020-11-28 02:56:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-11-28 02:56:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 760 transitions. [2020-11-28 02:56:32,055 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 760 transitions. Word has length 22 [2020-11-28 02:56:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:32,056 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 760 transitions. [2020-11-28 02:56:32,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 760 transitions. [2020-11-28 02:56:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:56:32,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:32,057 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] [2020-11-28 02:56:32,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 02:56:32,058 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:32,058 INFO L82 PathProgramCache]: Analyzing trace with hash -478605317, now seen corresponding path program 1 times [2020-11-28 02:56:32,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:32,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447180488] [2020-11-28 02:56:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:32,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447180488] [2020-11-28 02:56:32,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:32,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:32,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500111245] [2020-11-28 02:56:32,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:32,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:32,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:32,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:32,122 INFO L87 Difference]: Start difference. First operand 586 states and 760 transitions. Second operand 4 states. [2020-11-28 02:56:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:32,243 INFO L93 Difference]: Finished difference Result 603 states and 761 transitions. [2020-11-28 02:56:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:32,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-28 02:56:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:32,248 INFO L225 Difference]: With dead ends: 603 [2020-11-28 02:56:32,248 INFO L226 Difference]: Without dead ends: 603 [2020-11-28 02:56:32,250 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 [2020-11-28 02:56:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-11-28 02:56:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 602. [2020-11-28 02:56:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-11-28 02:56:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 760 transitions. [2020-11-28 02:56:32,268 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 760 transitions. Word has length 23 [2020-11-28 02:56:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:32,269 INFO L481 AbstractCegarLoop]: Abstraction has 602 states and 760 transitions. [2020-11-28 02:56:32,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 760 transitions. [2020-11-28 02:56:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:56:32,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:32,270 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] [2020-11-28 02:56:32,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 02:56:32,271 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash 222459261, now seen corresponding path program 1 times [2020-11-28 02:56:32,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:32,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735681410] [2020-11-28 02:56:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:32,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735681410] [2020-11-28 02:56:32,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:32,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:32,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981455581] [2020-11-28 02:56:32,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:32,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:32,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:32,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:32,343 INFO L87 Difference]: Start difference. First operand 602 states and 760 transitions. Second operand 4 states. [2020-11-28 02:56:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:32,453 INFO L93 Difference]: Finished difference Result 970 states and 1176 transitions. [2020-11-28 02:56:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:32,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-28 02:56:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:32,459 INFO L225 Difference]: With dead ends: 970 [2020-11-28 02:56:32,459 INFO L226 Difference]: Without dead ends: 970 [2020-11-28 02:56:32,460 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 [2020-11-28 02:56:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-11-28 02:56:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 906. [2020-11-28 02:56:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-11-28 02:56:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1112 transitions. [2020-11-28 02:56:32,486 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1112 transitions. Word has length 23 [2020-11-28 02:56:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:32,487 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1112 transitions. [2020-11-28 02:56:32,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1112 transitions. [2020-11-28 02:56:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:56:32,489 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:32,489 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] [2020-11-28 02:56:32,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 02:56:32,489 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:32,490 INFO L82 PathProgramCache]: Analyzing trace with hash -170567749, now seen corresponding path program 1 times [2020-11-28 02:56:32,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:32,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426693259] [2020-11-28 02:56:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:32,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426693259] [2020-11-28 02:56:32,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:32,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:32,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777639203] [2020-11-28 02:56:32,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:32,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:32,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:32,546 INFO L87 Difference]: Start difference. First operand 906 states and 1112 transitions. Second operand 4 states. [2020-11-28 02:56:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:32,662 INFO L93 Difference]: Finished difference Result 1127 states and 1286 transitions. [2020-11-28 02:56:32,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:32,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-28 02:56:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:32,663 INFO L225 Difference]: With dead ends: 1127 [2020-11-28 02:56:32,663 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:32,663 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 [2020-11-28 02:56:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:32,664 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-28 02:56:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:32,664 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:32,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:32,664 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:32,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 02:56:32,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:32 BoogieIcfgContainer [2020-11-28 02:56:32,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:32,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:32,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:32,672 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:32,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:28" (3/4) ... [2020-11-28 02:56:32,675 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:32,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-28 02:56:32,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 02:56:32,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 02:56:32,692 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 02:56:32,693 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:56:32,693 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 02:56:32,693 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:32,752 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8a8d84e2-55e9-42d5-96c0-f384a62adea2/bin/uautomizer/witness.graphml [2020-11-28 02:56:32,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:32,758 INFO L168 Benchmark]: Toolchain (without parser) took 5401.46 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 75.3 MB in the beginning and 68.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 59.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:32,758 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 75.5 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:32,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.17 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 71.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:32,760 INFO L168 Benchmark]: Boogie Preprocessor took 36.46 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 69.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:32,760 INFO L168 Benchmark]: RCFGBuilder took 454.52 ms. Allocated memory is still 98.6 MB. Free memory was 69.4 MB in the beginning and 52.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:32,762 INFO L168 Benchmark]: TraceAbstraction took 4578.60 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 52.1 MB in the beginning and 71.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:32,763 INFO L168 Benchmark]: Witness Printer took 84.33 ms. Allocated memory is still 151.0 MB. Free memory was 71.7 MB in the beginning and 68.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:32,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 75.5 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.17 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 71.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.46 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 69.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 454.52 ms. Allocated memory is still 98.6 MB. Free memory was 69.4 MB in the beginning and 52.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4578.60 ms. Allocated memory was 98.6 MB in the beginning and 151.0 MB in the end (delta: 52.4 MB). Free memory was 52.1 MB in the beginning and 71.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. * Witness Printer took 84.33 ms. Allocated memory is still 151.0 MB. Free memory was 71.7 MB in the beginning and 68.6 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, 38 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 934 SDtfs, 1243 SDslu, 124 SDs, 0 SdLazy, 642 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=906occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 254 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 20501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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...