./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_13.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:55:17,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:55:17,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:55:17,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:55:17,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:55:17,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:55:17,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:55:17,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:55:17,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:55:17,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:55:17,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:55:17,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:55:17,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:55:17,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:55:17,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:55:17,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:55:17,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:55:17,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:55:17,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:55:17,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:55:17,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:55:17,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:55:17,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:55:17,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:55:17,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:55:17,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:55:17,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:55:17,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:55:17,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:55:17,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:55:17,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:55:17,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:55:17,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:55:18,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:55:18,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:55:18,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:55:18,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:55:18,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:55:18,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:55:18,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:55:18,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:55:18,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:55:18,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:55:18,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:55:18,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:55:18,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:55:18,067 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:55:18,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:55:18,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:55:18,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:55:18,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:55:18,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:55:18,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:55:18,069 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:55:18,070 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:55:18,070 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:55:18,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:55:18,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:55:18,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:55:18,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:55:18,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:55:18,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:55:18,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:55:18,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:55:18,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:55:18,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:55:18,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:55:18,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:55:18,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:55:18,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:55:18,074 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 [2020-10-26 03:55:18,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:55:18,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:55:18,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:55:18,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:55:18,505 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:55:18,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_13.c [2020-10-26 03:55:18,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f356c6a8/9b0253519b0e4844ad750eaf95b3e182/FLAG12a681edc [2020-10-26 03:55:19,282 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:55:19,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c [2020-10-26 03:55:19,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f356c6a8/9b0253519b0e4844ad750eaf95b3e182/FLAG12a681edc [2020-10-26 03:55:19,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f356c6a8/9b0253519b0e4844ad750eaf95b3e182 [2020-10-26 03:55:19,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:55:19,662 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:55:19,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:55:19,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:55:19,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:55:19,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:19,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f112b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19, skipping insertion in model container [2020-10-26 03:55:19,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:19,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:55:19,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:55:19,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:55:19,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:55:19,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:55:19,996 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:55:19,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19 WrapperNode [2020-10-26 03:55:19,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:55:19,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:55:19,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:55:19,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:55:20,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:20,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:20,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:20,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:20,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:20,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:20,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (1/1) ... [2020-10-26 03:55:20,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:55:20,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:55:20,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:55:20,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:55:20,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 03:55:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:55:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:55:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:55:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:55:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:55:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:55:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:55:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:55:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:55:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:55:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:55:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 03:55:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:55:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:55:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:55:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:55:20,725 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:55:20,727 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 03:55:20,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:20 BoogieIcfgContainer [2020-10-26 03:55:20,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:55:20,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:55:20,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:55:20,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:55:20,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:55:19" (1/3) ... [2020-10-26 03:55:20,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733ff221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:55:20, skipping insertion in model container [2020-10-26 03:55:20,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:19" (2/3) ... [2020-10-26 03:55:20,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733ff221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:55:20, skipping insertion in model container [2020-10-26 03:55:20,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:20" (3/3) ... [2020-10-26 03:55:20,743 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2020-10-26 03:55:20,757 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:55:20,763 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-26 03:55:20,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-26 03:55:20,825 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:55:20,826 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:55:20,826 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:55:20,826 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:55:20,826 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:55:20,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:55:20,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:55:20,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:55:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-26 03:55:20,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 03:55:20,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:20,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:20,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:20,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1331697042, now seen corresponding path program 1 times [2020-10-26 03:55:20,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:20,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406094963] [2020-10-26 03:55:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:21,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406094963] [2020-10-26 03:55:21,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:21,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:55:21,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371960234] [2020-10-26 03:55:21,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:55:21,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:21,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:55:21,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:55:21,319 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-10-26 03:55:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:21,367 INFO L93 Difference]: Finished difference Result 55 states and 93 transitions. [2020-10-26 03:55:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:55:21,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-26 03:55:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:21,380 INFO L225 Difference]: With dead ends: 55 [2020-10-26 03:55:21,380 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 03:55:21,382 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 [2020-10-26 03:55:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 03:55:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-26 03:55:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-26 03:55:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 88 transitions. [2020-10-26 03:55:21,434 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 88 transitions. Word has length 9 [2020-10-26 03:55:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:21,435 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 88 transitions. [2020-10-26 03:55:21,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:55:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 88 transitions. [2020-10-26 03:55:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 03:55:21,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:21,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:21,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:55:21,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:21,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1784430188, now seen corresponding path program 1 times [2020-10-26 03:55:21,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:21,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323532714] [2020-10-26 03:55:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:21,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:21,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323532714] [2020-10-26 03:55:21,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:21,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:21,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328518989] [2020-10-26 03:55:21,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:21,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:21,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:21,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:21,635 INFO L87 Difference]: Start difference. First operand 50 states and 88 transitions. Second operand 4 states. [2020-10-26 03:55:21,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:21,938 INFO L93 Difference]: Finished difference Result 91 states and 166 transitions. [2020-10-26 03:55:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:21,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-26 03:55:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:21,943 INFO L225 Difference]: With dead ends: 91 [2020-10-26 03:55:21,943 INFO L226 Difference]: Without dead ends: 91 [2020-10-26 03:55:21,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:55:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-26 03:55:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2020-10-26 03:55:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-26 03:55:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 115 transitions. [2020-10-26 03:55:21,958 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 115 transitions. Word has length 25 [2020-10-26 03:55:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:21,959 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 115 transitions. [2020-10-26 03:55:21,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:21,959 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 115 transitions. [2020-10-26 03:55:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 03:55:21,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:21,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:21,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:55:21,961 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:21,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:21,962 INFO L82 PathProgramCache]: Analyzing trace with hash 196082286, now seen corresponding path program 1 times [2020-10-26 03:55:21,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:21,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362893504] [2020-10-26 03:55:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:22,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:22,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362893504] [2020-10-26 03:55:22,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:22,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:22,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917734501] [2020-10-26 03:55:22,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:22,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:22,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:22,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:22,097 INFO L87 Difference]: Start difference. First operand 64 states and 115 transitions. Second operand 4 states. [2020-10-26 03:55:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:22,324 INFO L93 Difference]: Finished difference Result 91 states and 164 transitions. [2020-10-26 03:55:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:22,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-26 03:55:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:22,327 INFO L225 Difference]: With dead ends: 91 [2020-10-26 03:55:22,328 INFO L226 Difference]: Without dead ends: 91 [2020-10-26 03:55:22,328 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 [2020-10-26 03:55:22,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-26 03:55:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-26 03:55:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-26 03:55:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 163 transitions. [2020-10-26 03:55:22,343 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 163 transitions. Word has length 25 [2020-10-26 03:55:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:22,344 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 163 transitions. [2020-10-26 03:55:22,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 163 transitions. [2020-10-26 03:55:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 03:55:22,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:22,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:22,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:55:22,346 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:22,347 INFO L82 PathProgramCache]: Analyzing trace with hash -510661688, now seen corresponding path program 1 times [2020-10-26 03:55:22,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:22,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921724659] [2020-10-26 03:55:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:22,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921724659] [2020-10-26 03:55:22,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:22,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:22,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525993982] [2020-10-26 03:55:22,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:22,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:22,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:22,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:22,451 INFO L87 Difference]: Start difference. First operand 90 states and 163 transitions. Second operand 4 states. [2020-10-26 03:55:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:22,660 INFO L93 Difference]: Finished difference Result 94 states and 166 transitions. [2020-10-26 03:55:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:22,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 03:55:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:22,662 INFO L225 Difference]: With dead ends: 94 [2020-10-26 03:55:22,663 INFO L226 Difference]: Without dead ends: 94 [2020-10-26 03:55:22,663 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 [2020-10-26 03:55:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-26 03:55:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-26 03:55:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-26 03:55:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2020-10-26 03:55:22,674 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 26 [2020-10-26 03:55:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:22,674 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2020-10-26 03:55:22,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:22,675 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2020-10-26 03:55:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 03:55:22,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:22,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:22,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:55:22,676 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:22,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:22,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1790160902, now seen corresponding path program 1 times [2020-10-26 03:55:22,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:22,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360742438] [2020-10-26 03:55:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:22,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:22,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360742438] [2020-10-26 03:55:22,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:22,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:22,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851176753] [2020-10-26 03:55:22,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:22,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:22,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:22,778 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand 4 states. [2020-10-26 03:55:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:22,988 INFO L93 Difference]: Finished difference Result 173 states and 311 transitions. [2020-10-26 03:55:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:22,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 03:55:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:22,991 INFO L225 Difference]: With dead ends: 173 [2020-10-26 03:55:22,991 INFO L226 Difference]: Without dead ends: 173 [2020-10-26 03:55:22,992 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 [2020-10-26 03:55:22,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-26 03:55:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-10-26 03:55:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-26 03:55:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 310 transitions. [2020-10-26 03:55:23,019 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 310 transitions. Word has length 26 [2020-10-26 03:55:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:23,020 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 310 transitions. [2020-10-26 03:55:23,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 310 transitions. [2020-10-26 03:55:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 03:55:23,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:23,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:23,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:55:23,023 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:23,024 INFO L82 PathProgramCache]: Analyzing trace with hash -916458492, now seen corresponding path program 1 times [2020-10-26 03:55:23,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:23,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761407790] [2020-10-26 03:55:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:23,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761407790] [2020-10-26 03:55:23,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:23,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:23,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642347550] [2020-10-26 03:55:23,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:23,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:23,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:23,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:23,155 INFO L87 Difference]: Start difference. First operand 172 states and 310 transitions. Second operand 4 states. [2020-10-26 03:55:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:23,375 INFO L93 Difference]: Finished difference Result 221 states and 401 transitions. [2020-10-26 03:55:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:23,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 03:55:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:23,378 INFO L225 Difference]: With dead ends: 221 [2020-10-26 03:55:23,379 INFO L226 Difference]: Without dead ends: 221 [2020-10-26 03:55:23,379 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 [2020-10-26 03:55:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-26 03:55:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 172. [2020-10-26 03:55:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-26 03:55:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 308 transitions. [2020-10-26 03:55:23,391 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 308 transitions. Word has length 26 [2020-10-26 03:55:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:23,392 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 308 transitions. [2020-10-26 03:55:23,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 308 transitions. [2020-10-26 03:55:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:23,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:23,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:23,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 03:55:23,395 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:23,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:23,396 INFO L82 PathProgramCache]: Analyzing trace with hash -332998983, now seen corresponding path program 1 times [2020-10-26 03:55:23,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:23,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071025224] [2020-10-26 03:55:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:23,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071025224] [2020-10-26 03:55:23,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:23,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:23,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191659113] [2020-10-26 03:55:23,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:23,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:23,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:23,487 INFO L87 Difference]: Start difference. First operand 172 states and 308 transitions. Second operand 4 states. [2020-10-26 03:55:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:23,680 INFO L93 Difference]: Finished difference Result 321 states and 583 transitions. [2020-10-26 03:55:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:23,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-26 03:55:23,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:23,684 INFO L225 Difference]: With dead ends: 321 [2020-10-26 03:55:23,684 INFO L226 Difference]: Without dead ends: 321 [2020-10-26 03:55:23,684 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 [2020-10-26 03:55:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-26 03:55:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 232. [2020-10-26 03:55:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-26 03:55:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 414 transitions. [2020-10-26 03:55:23,698 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 414 transitions. Word has length 27 [2020-10-26 03:55:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:23,698 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 414 transitions. [2020-10-26 03:55:23,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 414 transitions. [2020-10-26 03:55:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:23,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:23,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:23,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:55:23,701 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:23,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:23,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1921346885, now seen corresponding path program 1 times [2020-10-26 03:55:23,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:23,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315236371] [2020-10-26 03:55:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:23,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315236371] [2020-10-26 03:55:23,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:23,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:23,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614734969] [2020-10-26 03:55:23,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:23,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:23,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:23,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:23,814 INFO L87 Difference]: Start difference. First operand 232 states and 414 transitions. Second operand 4 states. [2020-10-26 03:55:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:24,041 INFO L93 Difference]: Finished difference Result 329 states and 585 transitions. [2020-10-26 03:55:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:24,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-26 03:55:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:24,045 INFO L225 Difference]: With dead ends: 329 [2020-10-26 03:55:24,045 INFO L226 Difference]: Without dead ends: 329 [2020-10-26 03:55:24,046 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 [2020-10-26 03:55:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-26 03:55:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2020-10-26 03:55:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-26 03:55:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 584 transitions. [2020-10-26 03:55:24,057 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 584 transitions. Word has length 27 [2020-10-26 03:55:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:24,058 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 584 transitions. [2020-10-26 03:55:24,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 584 transitions. [2020-10-26 03:55:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 03:55:24,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:24,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:24,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 03:55:24,061 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:24,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:24,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1726435407, now seen corresponding path program 1 times [2020-10-26 03:55:24,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:24,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246940842] [2020-10-26 03:55:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:24,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246940842] [2020-10-26 03:55:24,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:24,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:24,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402308817] [2020-10-26 03:55:24,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:24,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:24,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:24,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:24,147 INFO L87 Difference]: Start difference. First operand 328 states and 584 transitions. Second operand 4 states. [2020-10-26 03:55:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:24,357 INFO L93 Difference]: Finished difference Result 335 states and 589 transitions. [2020-10-26 03:55:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:24,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-26 03:55:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:24,360 INFO L225 Difference]: With dead ends: 335 [2020-10-26 03:55:24,360 INFO L226 Difference]: Without dead ends: 335 [2020-10-26 03:55:24,361 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 [2020-10-26 03:55:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-26 03:55:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334. [2020-10-26 03:55:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-26 03:55:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 588 transitions. [2020-10-26 03:55:24,377 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 588 transitions. Word has length 28 [2020-10-26 03:55:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:24,377 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 588 transitions. [2020-10-26 03:55:24,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 588 transitions. [2020-10-26 03:55:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 03:55:24,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:24,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:24,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 03:55:24,379 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:24,380 INFO L82 PathProgramCache]: Analyzing trace with hash 574387183, now seen corresponding path program 1 times [2020-10-26 03:55:24,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:24,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837948100] [2020-10-26 03:55:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:24,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837948100] [2020-10-26 03:55:24,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:24,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:24,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597400046] [2020-10-26 03:55:24,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:24,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:24,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:24,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:24,438 INFO L87 Difference]: Start difference. First operand 334 states and 588 transitions. Second operand 4 states. [2020-10-26 03:55:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:24,648 INFO L93 Difference]: Finished difference Result 619 states and 1101 transitions. [2020-10-26 03:55:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:24,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-26 03:55:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:24,652 INFO L225 Difference]: With dead ends: 619 [2020-10-26 03:55:24,653 INFO L226 Difference]: Without dead ends: 619 [2020-10-26 03:55:24,653 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 [2020-10-26 03:55:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-10-26 03:55:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 458. [2020-10-26 03:55:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-26 03:55:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 796 transitions. [2020-10-26 03:55:24,669 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 796 transitions. Word has length 28 [2020-10-26 03:55:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:24,670 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 796 transitions. [2020-10-26 03:55:24,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 796 transitions. [2020-10-26 03:55:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 03:55:24,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:24,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:24,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 03:55:24,675 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:24,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1013960719, now seen corresponding path program 1 times [2020-10-26 03:55:24,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:24,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467642905] [2020-10-26 03:55:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:24,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:24,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467642905] [2020-10-26 03:55:24,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:24,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:24,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261580720] [2020-10-26 03:55:24,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:24,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:24,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:24,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:24,765 INFO L87 Difference]: Start difference. First operand 458 states and 796 transitions. Second operand 4 states. [2020-10-26 03:55:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:24,968 INFO L93 Difference]: Finished difference Result 643 states and 1113 transitions. [2020-10-26 03:55:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:24,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-26 03:55:24,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:24,973 INFO L225 Difference]: With dead ends: 643 [2020-10-26 03:55:24,974 INFO L226 Difference]: Without dead ends: 643 [2020-10-26 03:55:24,974 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 [2020-10-26 03:55:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-26 03:55:24,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 642. [2020-10-26 03:55:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-26 03:55:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1112 transitions. [2020-10-26 03:55:24,992 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1112 transitions. Word has length 28 [2020-10-26 03:55:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:24,992 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 1112 transitions. [2020-10-26 03:55:24,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1112 transitions. [2020-10-26 03:55:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 03:55:24,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:24,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:24,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 03:55:24,994 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 632742534, now seen corresponding path program 1 times [2020-10-26 03:55:24,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:24,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803865577] [2020-10-26 03:55:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:25,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803865577] [2020-10-26 03:55:25,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:25,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:25,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937915385] [2020-10-26 03:55:25,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:25,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:25,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:25,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:25,059 INFO L87 Difference]: Start difference. First operand 642 states and 1112 transitions. Second operand 4 states. [2020-10-26 03:55:25,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:25,235 INFO L93 Difference]: Finished difference Result 651 states and 1113 transitions. [2020-10-26 03:55:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:25,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-26 03:55:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:25,239 INFO L225 Difference]: With dead ends: 651 [2020-10-26 03:55:25,239 INFO L226 Difference]: Without dead ends: 651 [2020-10-26 03:55:25,240 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 [2020-10-26 03:55:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-10-26 03:55:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 650. [2020-10-26 03:55:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-10-26 03:55:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1112 transitions. [2020-10-26 03:55:25,264 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1112 transitions. Word has length 29 [2020-10-26 03:55:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:25,264 INFO L481 AbstractCegarLoop]: Abstraction has 650 states and 1112 transitions. [2020-10-26 03:55:25,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1112 transitions. [2020-10-26 03:55:25,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 03:55:25,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:25,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:25,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 03:55:25,266 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:25,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1361402172, now seen corresponding path program 1 times [2020-10-26 03:55:25,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:25,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805737595] [2020-10-26 03:55:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:25,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805737595] [2020-10-26 03:55:25,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:25,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:25,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990218031] [2020-10-26 03:55:25,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:25,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:25,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:25,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:25,327 INFO L87 Difference]: Start difference. First operand 650 states and 1112 transitions. Second operand 4 states. [2020-10-26 03:55:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:25,528 INFO L93 Difference]: Finished difference Result 1195 states and 2065 transitions. [2020-10-26 03:55:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:25,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-26 03:55:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:25,535 INFO L225 Difference]: With dead ends: 1195 [2020-10-26 03:55:25,536 INFO L226 Difference]: Without dead ends: 1195 [2020-10-26 03:55:25,536 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 [2020-10-26 03:55:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-26 03:55:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 906. [2020-10-26 03:55:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-10-26 03:55:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1520 transitions. [2020-10-26 03:55:25,563 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1520 transitions. Word has length 29 [2020-10-26 03:55:25,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:25,564 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1520 transitions. [2020-10-26 03:55:25,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1520 transitions. [2020-10-26 03:55:25,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 03:55:25,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:25,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:25,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 03:55:25,566 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:25,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1345217222, now seen corresponding path program 1 times [2020-10-26 03:55:25,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:25,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039665302] [2020-10-26 03:55:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:25,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039665302] [2020-10-26 03:55:25,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:25,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:25,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282040160] [2020-10-26 03:55:25,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:25,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:25,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:25,641 INFO L87 Difference]: Start difference. First operand 906 states and 1520 transitions. Second operand 4 states. [2020-10-26 03:55:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:25,841 INFO L93 Difference]: Finished difference Result 1259 states and 2105 transitions. [2020-10-26 03:55:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:25,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-26 03:55:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:25,849 INFO L225 Difference]: With dead ends: 1259 [2020-10-26 03:55:25,849 INFO L226 Difference]: Without dead ends: 1259 [2020-10-26 03:55:25,849 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 [2020-10-26 03:55:25,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2020-10-26 03:55:25,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1258. [2020-10-26 03:55:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-10-26 03:55:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2104 transitions. [2020-10-26 03:55:25,887 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2104 transitions. Word has length 29 [2020-10-26 03:55:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:25,888 INFO L481 AbstractCegarLoop]: Abstraction has 1258 states and 2104 transitions. [2020-10-26 03:55:25,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2104 transitions. [2020-10-26 03:55:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 03:55:25,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:25,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:25,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 03:55:25,890 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:25,891 INFO L82 PathProgramCache]: Analyzing trace with hash 752825244, now seen corresponding path program 1 times [2020-10-26 03:55:25,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:25,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089247860] [2020-10-26 03:55:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:25,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089247860] [2020-10-26 03:55:25,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:25,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:25,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979369020] [2020-10-26 03:55:25,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:25,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:25,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:25,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:25,958 INFO L87 Difference]: Start difference. First operand 1258 states and 2104 transitions. Second operand 4 states. [2020-10-26 03:55:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:26,177 INFO L93 Difference]: Finished difference Result 1275 states and 2105 transitions. [2020-10-26 03:55:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:26,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-26 03:55:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:26,185 INFO L225 Difference]: With dead ends: 1275 [2020-10-26 03:55:26,185 INFO L226 Difference]: Without dead ends: 1275 [2020-10-26 03:55:26,186 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 [2020-10-26 03:55:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-10-26 03:55:26,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1274. [2020-10-26 03:55:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-10-26 03:55:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2104 transitions. [2020-10-26 03:55:26,218 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2104 transitions. Word has length 30 [2020-10-26 03:55:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:26,218 INFO L481 AbstractCegarLoop]: Abstraction has 1274 states and 2104 transitions. [2020-10-26 03:55:26,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2104 transitions. [2020-10-26 03:55:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 03:55:26,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:26,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:26,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 03:55:26,221 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:26,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1241319462, now seen corresponding path program 1 times [2020-10-26 03:55:26,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:26,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239157743] [2020-10-26 03:55:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:26,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239157743] [2020-10-26 03:55:26,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:26,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:26,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066101625] [2020-10-26 03:55:26,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:26,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:26,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:26,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:26,278 INFO L87 Difference]: Start difference. First operand 1274 states and 2104 transitions. Second operand 4 states. [2020-10-26 03:55:26,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:26,485 INFO L93 Difference]: Finished difference Result 2315 states and 3865 transitions. [2020-10-26 03:55:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:26,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-26 03:55:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:26,497 INFO L225 Difference]: With dead ends: 2315 [2020-10-26 03:55:26,497 INFO L226 Difference]: Without dead ends: 2315 [2020-10-26 03:55:26,497 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 [2020-10-26 03:55:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-10-26 03:55:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1802. [2020-10-26 03:55:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-26 03:55:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2904 transitions. [2020-10-26 03:55:26,558 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2904 transitions. Word has length 30 [2020-10-26 03:55:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:26,558 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 2904 transitions. [2020-10-26 03:55:26,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2904 transitions. [2020-10-26 03:55:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 03:55:26,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:26,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:26,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 03:55:26,561 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:26,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1465299932, now seen corresponding path program 1 times [2020-10-26 03:55:26,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:26,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919224527] [2020-10-26 03:55:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:26,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:26,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919224527] [2020-10-26 03:55:26,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:26,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:26,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951858711] [2020-10-26 03:55:26,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:26,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:26,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:26,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:26,617 INFO L87 Difference]: Start difference. First operand 1802 states and 2904 transitions. Second operand 4 states. [2020-10-26 03:55:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:26,812 INFO L93 Difference]: Finished difference Result 2475 states and 3977 transitions. [2020-10-26 03:55:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:26,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-26 03:55:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:26,825 INFO L225 Difference]: With dead ends: 2475 [2020-10-26 03:55:26,826 INFO L226 Difference]: Without dead ends: 2475 [2020-10-26 03:55:26,826 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 [2020-10-26 03:55:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2020-10-26 03:55:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2474. [2020-10-26 03:55:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2020-10-26 03:55:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3976 transitions. [2020-10-26 03:55:26,888 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3976 transitions. Word has length 30 [2020-10-26 03:55:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:26,888 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3976 transitions. [2020-10-26 03:55:26,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3976 transitions. [2020-10-26 03:55:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 03:55:26,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:26,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:26,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 03:55:26,907 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:26,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:26,908 INFO L82 PathProgramCache]: Analyzing trace with hash 180432529, now seen corresponding path program 1 times [2020-10-26 03:55:26,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:26,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734991002] [2020-10-26 03:55:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:26,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734991002] [2020-10-26 03:55:26,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:26,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:26,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227354879] [2020-10-26 03:55:26,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:26,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:26,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:26,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:26,986 INFO L87 Difference]: Start difference. First operand 2474 states and 3976 transitions. Second operand 4 states. [2020-10-26 03:55:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:27,190 INFO L93 Difference]: Finished difference Result 2507 states and 3977 transitions. [2020-10-26 03:55:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:27,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-26 03:55:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:27,203 INFO L225 Difference]: With dead ends: 2507 [2020-10-26 03:55:27,203 INFO L226 Difference]: Without dead ends: 2507 [2020-10-26 03:55:27,204 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 [2020-10-26 03:55:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-10-26 03:55:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2506. [2020-10-26 03:55:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2020-10-26 03:55:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3976 transitions. [2020-10-26 03:55:27,265 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3976 transitions. Word has length 31 [2020-10-26 03:55:27,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:27,265 INFO L481 AbstractCegarLoop]: Abstraction has 2506 states and 3976 transitions. [2020-10-26 03:55:27,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3976 transitions. [2020-10-26 03:55:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 03:55:27,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:27,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:27,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 03:55:27,269 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:27,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1813712177, now seen corresponding path program 1 times [2020-10-26 03:55:27,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:27,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426182724] [2020-10-26 03:55:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:27,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426182724] [2020-10-26 03:55:27,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:27,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:27,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656903956] [2020-10-26 03:55:27,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:27,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:27,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:27,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:27,343 INFO L87 Difference]: Start difference. First operand 2506 states and 3976 transitions. Second operand 4 states. [2020-10-26 03:55:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:27,551 INFO L93 Difference]: Finished difference Result 4491 states and 7209 transitions. [2020-10-26 03:55:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:27,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-26 03:55:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:27,574 INFO L225 Difference]: With dead ends: 4491 [2020-10-26 03:55:27,574 INFO L226 Difference]: Without dead ends: 4491 [2020-10-26 03:55:27,574 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 [2020-10-26 03:55:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2020-10-26 03:55:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 3594. [2020-10-26 03:55:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-26 03:55:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5544 transitions. [2020-10-26 03:55:27,660 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5544 transitions. Word has length 31 [2020-10-26 03:55:27,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:27,660 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 5544 transitions. [2020-10-26 03:55:27,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5544 transitions. [2020-10-26 03:55:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 03:55:27,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:27,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:27,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 03:55:27,666 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:27,667 INFO L82 PathProgramCache]: Analyzing trace with hash 892907217, now seen corresponding path program 1 times [2020-10-26 03:55:27,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:27,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818489449] [2020-10-26 03:55:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:27,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:27,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818489449] [2020-10-26 03:55:27,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:27,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:27,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146901105] [2020-10-26 03:55:27,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:27,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:27,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:27,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:27,740 INFO L87 Difference]: Start difference. First operand 3594 states and 5544 transitions. Second operand 4 states. [2020-10-26 03:55:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:27,937 INFO L93 Difference]: Finished difference Result 4875 states and 7497 transitions. [2020-10-26 03:55:27,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:27,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-26 03:55:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:27,978 INFO L225 Difference]: With dead ends: 4875 [2020-10-26 03:55:27,981 INFO L226 Difference]: Without dead ends: 4875 [2020-10-26 03:55:27,981 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 [2020-10-26 03:55:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2020-10-26 03:55:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4874. [2020-10-26 03:55:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4874 states. [2020-10-26 03:55:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 7496 transitions. [2020-10-26 03:55:28,087 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 7496 transitions. Word has length 31 [2020-10-26 03:55:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:28,088 INFO L481 AbstractCegarLoop]: Abstraction has 4874 states and 7496 transitions. [2020-10-26 03:55:28,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 7496 transitions. [2020-10-26 03:55:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 03:55:28,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:28,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:28,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 03:55:28,099 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:28,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:28,100 INFO L82 PathProgramCache]: Analyzing trace with hash -383861881, now seen corresponding path program 1 times [2020-10-26 03:55:28,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:28,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140176731] [2020-10-26 03:55:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:28,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140176731] [2020-10-26 03:55:28,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:28,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:28,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31530442] [2020-10-26 03:55:28,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:28,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:28,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:28,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:28,174 INFO L87 Difference]: Start difference. First operand 4874 states and 7496 transitions. Second operand 4 states. [2020-10-26 03:55:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:28,379 INFO L93 Difference]: Finished difference Result 4939 states and 7497 transitions. [2020-10-26 03:55:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:28,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-26 03:55:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:28,393 INFO L225 Difference]: With dead ends: 4939 [2020-10-26 03:55:28,393 INFO L226 Difference]: Without dead ends: 4939 [2020-10-26 03:55:28,393 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 [2020-10-26 03:55:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2020-10-26 03:55:28,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4938. [2020-10-26 03:55:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4938 states. [2020-10-26 03:55:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 7496 transitions. [2020-10-26 03:55:28,516 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 7496 transitions. Word has length 32 [2020-10-26 03:55:28,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:28,517 INFO L481 AbstractCegarLoop]: Abstraction has 4938 states and 7496 transitions. [2020-10-26 03:55:28,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 7496 transitions. [2020-10-26 03:55:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 03:55:28,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:28,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:28,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 03:55:28,524 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:28,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1916960709, now seen corresponding path program 1 times [2020-10-26 03:55:28,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:28,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9089817] [2020-10-26 03:55:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:28,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:28,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9089817] [2020-10-26 03:55:28,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:28,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:28,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558401643] [2020-10-26 03:55:28,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:28,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:28,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:28,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:28,620 INFO L87 Difference]: Start difference. First operand 4938 states and 7496 transitions. Second operand 4 states. [2020-10-26 03:55:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:28,827 INFO L93 Difference]: Finished difference Result 8715 states and 13385 transitions. [2020-10-26 03:55:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:28,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-26 03:55:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:28,845 INFO L225 Difference]: With dead ends: 8715 [2020-10-26 03:55:28,846 INFO L226 Difference]: Without dead ends: 8715 [2020-10-26 03:55:28,846 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 [2020-10-26 03:55:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2020-10-26 03:55:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 7178. [2020-10-26 03:55:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7178 states. [2020-10-26 03:55:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 10568 transitions. [2020-10-26 03:55:29,005 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 10568 transitions. Word has length 32 [2020-10-26 03:55:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:29,005 INFO L481 AbstractCegarLoop]: Abstraction has 7178 states and 10568 transitions. [2020-10-26 03:55:29,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 10568 transitions. [2020-10-26 03:55:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 03:55:29,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:29,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:29,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 03:55:29,017 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:29,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:29,017 INFO L82 PathProgramCache]: Analyzing trace with hash 328612807, now seen corresponding path program 1 times [2020-10-26 03:55:29,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:29,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176415713] [2020-10-26 03:55:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:29,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:29,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176415713] [2020-10-26 03:55:29,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:29,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:29,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093465259] [2020-10-26 03:55:29,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:29,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:29,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:29,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:29,075 INFO L87 Difference]: Start difference. First operand 7178 states and 10568 transitions. Second operand 4 states. [2020-10-26 03:55:29,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:29,300 INFO L93 Difference]: Finished difference Result 9611 states and 14089 transitions. [2020-10-26 03:55:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:29,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-26 03:55:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:29,320 INFO L225 Difference]: With dead ends: 9611 [2020-10-26 03:55:29,320 INFO L226 Difference]: Without dead ends: 9611 [2020-10-26 03:55:29,320 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 [2020-10-26 03:55:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9611 states. [2020-10-26 03:55:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9611 to 9610. [2020-10-26 03:55:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9610 states. [2020-10-26 03:55:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 14088 transitions. [2020-10-26 03:55:29,513 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 14088 transitions. Word has length 32 [2020-10-26 03:55:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:29,514 INFO L481 AbstractCegarLoop]: Abstraction has 9610 states and 14088 transitions. [2020-10-26 03:55:29,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 14088 transitions. [2020-10-26 03:55:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-26 03:55:29,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:29,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:29,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 03:55:29,526 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:29,526 INFO L82 PathProgramCache]: Analyzing trace with hash -697108836, now seen corresponding path program 1 times [2020-10-26 03:55:29,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:29,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890425850] [2020-10-26 03:55:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:29,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890425850] [2020-10-26 03:55:29,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:29,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:29,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199163029] [2020-10-26 03:55:29,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:29,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:29,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:29,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:29,578 INFO L87 Difference]: Start difference. First operand 9610 states and 14088 transitions. Second operand 4 states. [2020-10-26 03:55:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:29,818 INFO L93 Difference]: Finished difference Result 9739 states and 14089 transitions. [2020-10-26 03:55:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:29,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-26 03:55:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:29,838 INFO L225 Difference]: With dead ends: 9739 [2020-10-26 03:55:29,838 INFO L226 Difference]: Without dead ends: 9739 [2020-10-26 03:55:29,839 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 [2020-10-26 03:55:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2020-10-26 03:55:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 9738. [2020-10-26 03:55:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9738 states. [2020-10-26 03:55:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 14088 transitions. [2020-10-26 03:55:30,076 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 14088 transitions. Word has length 33 [2020-10-26 03:55:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:30,077 INFO L481 AbstractCegarLoop]: Abstraction has 9738 states and 14088 transitions. [2020-10-26 03:55:30,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 14088 transitions. [2020-10-26 03:55:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-26 03:55:30,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:30,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:30,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 03:55:30,090 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:30,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:30,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1603713754, now seen corresponding path program 1 times [2020-10-26 03:55:30,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:30,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109498339] [2020-10-26 03:55:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:30,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:30,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109498339] [2020-10-26 03:55:30,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:30,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:30,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109080807] [2020-10-26 03:55:30,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:30,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:30,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:30,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:30,145 INFO L87 Difference]: Start difference. First operand 9738 states and 14088 transitions. Second operand 4 states. [2020-10-26 03:55:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:30,349 INFO L93 Difference]: Finished difference Result 16907 states and 24713 transitions. [2020-10-26 03:55:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:30,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-26 03:55:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:30,383 INFO L225 Difference]: With dead ends: 16907 [2020-10-26 03:55:30,383 INFO L226 Difference]: Without dead ends: 16907 [2020-10-26 03:55:30,384 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 [2020-10-26 03:55:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16907 states. [2020-10-26 03:55:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16907 to 14346. [2020-10-26 03:55:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14346 states. [2020-10-26 03:55:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14346 states to 14346 states and 20104 transitions. [2020-10-26 03:55:30,693 INFO L78 Accepts]: Start accepts. Automaton has 14346 states and 20104 transitions. Word has length 33 [2020-10-26 03:55:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:30,693 INFO L481 AbstractCegarLoop]: Abstraction has 14346 states and 20104 transitions. [2020-10-26 03:55:30,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 14346 states and 20104 transitions. [2020-10-26 03:55:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-26 03:55:30,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:30,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:30,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 03:55:30,716 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:30,717 INFO L82 PathProgramCache]: Analyzing trace with hash 15365852, now seen corresponding path program 1 times [2020-10-26 03:55:30,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:30,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087687251] [2020-10-26 03:55:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:30,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087687251] [2020-10-26 03:55:30,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:30,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:30,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38940587] [2020-10-26 03:55:30,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:30,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:30,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:30,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:30,779 INFO L87 Difference]: Start difference. First operand 14346 states and 20104 transitions. Second operand 4 states. [2020-10-26 03:55:31,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:31,058 INFO L93 Difference]: Finished difference Result 18955 states and 26377 transitions. [2020-10-26 03:55:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:31,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-26 03:55:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:31,096 INFO L225 Difference]: With dead ends: 18955 [2020-10-26 03:55:31,096 INFO L226 Difference]: Without dead ends: 18955 [2020-10-26 03:55:31,096 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 [2020-10-26 03:55:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18955 states. [2020-10-26 03:55:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18955 to 18954. [2020-10-26 03:55:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18954 states. [2020-10-26 03:55:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18954 states to 18954 states and 26376 transitions. [2020-10-26 03:55:31,386 INFO L78 Accepts]: Start accepts. Automaton has 18954 states and 26376 transitions. Word has length 33 [2020-10-26 03:55:31,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:31,386 INFO L481 AbstractCegarLoop]: Abstraction has 18954 states and 26376 transitions. [2020-10-26 03:55:31,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:31,387 INFO L276 IsEmpty]: Start isEmpty. Operand 18954 states and 26376 transitions. [2020-10-26 03:55:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-26 03:55:31,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:31,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:31,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 03:55:31,426 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:31,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:31,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1817819278, now seen corresponding path program 1 times [2020-10-26 03:55:31,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:31,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707610277] [2020-10-26 03:55:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:31,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:31,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707610277] [2020-10-26 03:55:31,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:31,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:31,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356510124] [2020-10-26 03:55:31,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:31,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:31,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:31,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:31,577 INFO L87 Difference]: Start difference. First operand 18954 states and 26376 transitions. Second operand 4 states. [2020-10-26 03:55:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:31,792 INFO L93 Difference]: Finished difference Result 19211 states and 26377 transitions. [2020-10-26 03:55:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:31,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-26 03:55:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:31,821 INFO L225 Difference]: With dead ends: 19211 [2020-10-26 03:55:31,821 INFO L226 Difference]: Without dead ends: 19211 [2020-10-26 03:55:31,821 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 [2020-10-26 03:55:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19211 states. [2020-10-26 03:55:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19211 to 19210. [2020-10-26 03:55:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19210 states. [2020-10-26 03:55:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19210 states to 19210 states and 26376 transitions. [2020-10-26 03:55:32,145 INFO L78 Accepts]: Start accepts. Automaton has 19210 states and 26376 transitions. Word has length 34 [2020-10-26 03:55:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:32,145 INFO L481 AbstractCegarLoop]: Abstraction has 19210 states and 26376 transitions. [2020-10-26 03:55:32,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 19210 states and 26376 transitions. [2020-10-26 03:55:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-26 03:55:32,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:32,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:32,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 03:55:32,165 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:32,165 INFO L82 PathProgramCache]: Analyzing trace with hash 483003312, now seen corresponding path program 1 times [2020-10-26 03:55:32,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:32,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570986424] [2020-10-26 03:55:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:32,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570986424] [2020-10-26 03:55:32,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:32,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:32,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898697722] [2020-10-26 03:55:32,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:32,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:32,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:32,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:32,220 INFO L87 Difference]: Start difference. First operand 19210 states and 26376 transitions. Second operand 4 states. [2020-10-26 03:55:32,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:32,470 INFO L93 Difference]: Finished difference Result 37387 states and 49673 transitions. [2020-10-26 03:55:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:32,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-26 03:55:32,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:32,640 INFO L225 Difference]: With dead ends: 37387 [2020-10-26 03:55:32,643 INFO L226 Difference]: Without dead ends: 37387 [2020-10-26 03:55:32,646 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 [2020-10-26 03:55:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37387 states. [2020-10-26 03:55:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37387 to 37386. [2020-10-26 03:55:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-10-26 03:55:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 49672 transitions. [2020-10-26 03:55:33,304 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 49672 transitions. Word has length 34 [2020-10-26 03:55:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:33,304 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 49672 transitions. [2020-10-26 03:55:33,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 49672 transitions. [2020-10-26 03:55:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-26 03:55:33,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:33,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:33,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 03:55:33,345 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:33,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:33,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2071351214, now seen corresponding path program 1 times [2020-10-26 03:55:33,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:33,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642118549] [2020-10-26 03:55:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:33,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642118549] [2020-10-26 03:55:33,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:33,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:33,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716966990] [2020-10-26 03:55:33,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:33,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:33,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:33,422 INFO L87 Difference]: Start difference. First operand 37386 states and 49672 transitions. Second operand 4 states. [2020-10-26 03:55:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:33,802 INFO L93 Difference]: Finished difference Result 41483 states and 56329 transitions. [2020-10-26 03:55:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:33,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-26 03:55:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:33,961 INFO L225 Difference]: With dead ends: 41483 [2020-10-26 03:55:33,961 INFO L226 Difference]: Without dead ends: 41483 [2020-10-26 03:55:33,961 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 [2020-10-26 03:55:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41483 states. [2020-10-26 03:55:34,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41483 to 37386. [2020-10-26 03:55:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-10-26 03:55:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 49160 transitions. [2020-10-26 03:55:34,571 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 49160 transitions. Word has length 34 [2020-10-26 03:55:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:34,571 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 49160 transitions. [2020-10-26 03:55:34,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 49160 transitions. [2020-10-26 03:55:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 03:55:34,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:34,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:34,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 03:55:34,605 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:34,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2094873255, now seen corresponding path program 1 times [2020-10-26 03:55:34,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:34,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526297521] [2020-10-26 03:55:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:34,806 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-26 03:55:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:34,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526297521] [2020-10-26 03:55:34,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:34,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:34,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715601487] [2020-10-26 03:55:34,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:34,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:34,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:34,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:34,819 INFO L87 Difference]: Start difference. First operand 37386 states and 49160 transitions. Second operand 4 states. [2020-10-26 03:55:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:35,320 INFO L93 Difference]: Finished difference Result 62987 states and 82953 transitions. [2020-10-26 03:55:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:35,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-26 03:55:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:35,427 INFO L225 Difference]: With dead ends: 62987 [2020-10-26 03:55:35,427 INFO L226 Difference]: Without dead ends: 62987 [2020-10-26 03:55:35,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:55:35,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62987 states. [2020-10-26 03:55:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62987 to 56842. [2020-10-26 03:55:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56842 states. [2020-10-26 03:55:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56842 states to 56842 states and 72712 transitions. [2020-10-26 03:55:36,190 INFO L78 Accepts]: Start accepts. Automaton has 56842 states and 72712 transitions. Word has length 35 [2020-10-26 03:55:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:36,190 INFO L481 AbstractCegarLoop]: Abstraction has 56842 states and 72712 transitions. [2020-10-26 03:55:36,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 56842 states and 72712 transitions. [2020-10-26 03:55:36,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 03:55:36,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:36,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:36,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 03:55:36,241 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:36,242 INFO L82 PathProgramCache]: Analyzing trace with hash 506525353, now seen corresponding path program 1 times [2020-10-26 03:55:36,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:36,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265544361] [2020-10-26 03:55:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:36,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:36,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265544361] [2020-10-26 03:55:36,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:36,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:36,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783520521] [2020-10-26 03:55:36,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:36,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:36,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:36,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:36,308 INFO L87 Difference]: Start difference. First operand 56842 states and 72712 transitions. Second operand 4 states. [2020-10-26 03:55:37,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:37,005 INFO L93 Difference]: Finished difference Result 73227 states and 92169 transitions. [2020-10-26 03:55:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:37,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-26 03:55:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:37,090 INFO L225 Difference]: With dead ends: 73227 [2020-10-26 03:55:37,090 INFO L226 Difference]: Without dead ends: 73227 [2020-10-26 03:55:37,091 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 [2020-10-26 03:55:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73227 states. [2020-10-26 03:55:38,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73227 to 73226. [2020-10-26 03:55:38,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73226 states. [2020-10-26 03:55:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73226 states to 73226 states and 92168 transitions. [2020-10-26 03:55:38,307 INFO L78 Accepts]: Start accepts. Automaton has 73226 states and 92168 transitions. Word has length 35 [2020-10-26 03:55:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:38,307 INFO L481 AbstractCegarLoop]: Abstraction has 73226 states and 92168 transitions. [2020-10-26 03:55:38,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 73226 states and 92168 transitions. [2020-10-26 03:55:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 03:55:38,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:38,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:38,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-26 03:55:38,349 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:38,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash 523244507, now seen corresponding path program 1 times [2020-10-26 03:55:38,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:38,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11862340] [2020-10-26 03:55:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:38,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:38,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11862340] [2020-10-26 03:55:38,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:38,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:38,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502477323] [2020-10-26 03:55:38,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:38,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:38,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:38,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:38,410 INFO L87 Difference]: Start difference. First operand 73226 states and 92168 transitions. Second operand 4 states. [2020-10-26 03:55:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:38,730 INFO L93 Difference]: Finished difference Result 74763 states and 93193 transitions. [2020-10-26 03:55:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:38,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-26 03:55:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:39,153 INFO L225 Difference]: With dead ends: 74763 [2020-10-26 03:55:39,153 INFO L226 Difference]: Without dead ends: 74763 [2020-10-26 03:55:39,155 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 [2020-10-26 03:55:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74763 states. [2020-10-26 03:55:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74763 to 74762. [2020-10-26 03:55:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74762 states. [2020-10-26 03:55:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74762 states to 74762 states and 93192 transitions. [2020-10-26 03:55:40,528 INFO L78 Accepts]: Start accepts. Automaton has 74762 states and 93192 transitions. Word has length 36 [2020-10-26 03:55:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:40,529 INFO L481 AbstractCegarLoop]: Abstraction has 74762 states and 93192 transitions. [2020-10-26 03:55:40,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 74762 states and 93192 transitions. [2020-10-26 03:55:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 03:55:40,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:40,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:40,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-26 03:55:40,560 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1470900199, now seen corresponding path program 1 times [2020-10-26 03:55:40,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:40,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297461947] [2020-10-26 03:55:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:40,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:40,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297461947] [2020-10-26 03:55:40,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:40,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:40,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502381368] [2020-10-26 03:55:40,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:40,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:40,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:40,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:40,636 INFO L87 Difference]: Start difference. First operand 74762 states and 93192 transitions. Second operand 4 states. [2020-10-26 03:55:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:41,025 INFO L93 Difference]: Finished difference Result 122891 states and 151561 transitions. [2020-10-26 03:55:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:41,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-26 03:55:41,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:41,149 INFO L225 Difference]: With dead ends: 122891 [2020-10-26 03:55:41,149 INFO L226 Difference]: Without dead ends: 122891 [2020-10-26 03:55:41,150 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 [2020-10-26 03:55:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122891 states. [2020-10-26 03:55:42,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122891 to 114698. [2020-10-26 03:55:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114698 states. [2020-10-26 03:55:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114698 states to 114698 states and 139272 transitions. [2020-10-26 03:55:42,858 INFO L78 Accepts]: Start accepts. Automaton has 114698 states and 139272 transitions. Word has length 36 [2020-10-26 03:55:42,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:42,858 INFO L481 AbstractCegarLoop]: Abstraction has 114698 states and 139272 transitions. [2020-10-26 03:55:42,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 114698 states and 139272 transitions. [2020-10-26 03:55:42,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 03:55:42,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:42,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:42,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-26 03:55:42,917 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:42,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1235719195, now seen corresponding path program 1 times [2020-10-26 03:55:42,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:42,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118319881] [2020-10-26 03:55:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:42,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:42,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118319881] [2020-10-26 03:55:42,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:42,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:42,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152302484] [2020-10-26 03:55:42,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:42,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:42,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:42,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:42,980 INFO L87 Difference]: Start difference. First operand 114698 states and 139272 transitions. Second operand 4 states. [2020-10-26 03:55:44,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:44,164 INFO L93 Difference]: Finished difference Result 145419 states and 172041 transitions. [2020-10-26 03:55:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:44,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-26 03:55:44,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:44,353 INFO L225 Difference]: With dead ends: 145419 [2020-10-26 03:55:44,353 INFO L226 Difference]: Without dead ends: 145419 [2020-10-26 03:55:44,353 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 [2020-10-26 03:55:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145419 states. [2020-10-26 03:55:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145419 to 145418. [2020-10-26 03:55:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145418 states. [2020-10-26 03:55:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145418 states to 145418 states and 172040 transitions. [2020-10-26 03:55:46,708 INFO L78 Accepts]: Start accepts. Automaton has 145418 states and 172040 transitions. Word has length 36 [2020-10-26 03:55:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:46,724 INFO L481 AbstractCegarLoop]: Abstraction has 145418 states and 172040 transitions. [2020-10-26 03:55:46,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 145418 states and 172040 transitions. [2020-10-26 03:55:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 03:55:46,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:46,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:46,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-26 03:55:46,910 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:46,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1653427700, now seen corresponding path program 1 times [2020-10-26 03:55:46,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:46,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290375777] [2020-10-26 03:55:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:46,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290375777] [2020-10-26 03:55:46,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:46,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:46,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866848429] [2020-10-26 03:55:46,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:46,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:46,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:46,975 INFO L87 Difference]: Start difference. First operand 145418 states and 172040 transitions. Second operand 4 states. [2020-10-26 03:55:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:47,507 INFO L93 Difference]: Finished difference Result 147467 states and 172041 transitions. [2020-10-26 03:55:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:47,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-26 03:55:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:47,705 INFO L225 Difference]: With dead ends: 147467 [2020-10-26 03:55:47,706 INFO L226 Difference]: Without dead ends: 147467 [2020-10-26 03:55:47,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:55:47,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147467 states. [2020-10-26 03:55:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147467 to 147466. [2020-10-26 03:55:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147466 states. [2020-10-26 03:55:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147466 states to 147466 states and 172040 transitions. [2020-10-26 03:55:50,259 INFO L78 Accepts]: Start accepts. Automaton has 147466 states and 172040 transitions. Word has length 37 [2020-10-26 03:55:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:50,259 INFO L481 AbstractCegarLoop]: Abstraction has 147466 states and 172040 transitions. [2020-10-26 03:55:50,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 147466 states and 172040 transitions. [2020-10-26 03:55:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 03:55:50,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:50,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:50,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-26 03:55:50,350 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:50,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:50,356 INFO L82 PathProgramCache]: Analyzing trace with hash -340717006, now seen corresponding path program 1 times [2020-10-26 03:55:50,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:50,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948553186] [2020-10-26 03:55:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:50,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948553186] [2020-10-26 03:55:50,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:50,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:50,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552134209] [2020-10-26 03:55:50,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:50,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:50,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:50,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:50,424 INFO L87 Difference]: Start difference. First operand 147466 states and 172040 transitions. Second operand 4 states. [2020-10-26 03:55:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:51,267 INFO L93 Difference]: Finished difference Result 237578 states and 270344 transitions. [2020-10-26 03:55:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:51,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-26 03:55:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:52,316 INFO L225 Difference]: With dead ends: 237578 [2020-10-26 03:55:52,316 INFO L226 Difference]: Without dead ends: 237578 [2020-10-26 03:55:52,317 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 [2020-10-26 03:55:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237578 states. [2020-10-26 03:55:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237578 to 229386. [2020-10-26 03:55:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229386 states. [2020-10-26 03:55:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229386 states to 229386 states and 262152 transitions. [2020-10-26 03:55:54,823 INFO L78 Accepts]: Start accepts. Automaton has 229386 states and 262152 transitions. Word has length 37 [2020-10-26 03:55:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:54,823 INFO L481 AbstractCegarLoop]: Abstraction has 229386 states and 262152 transitions. [2020-10-26 03:55:54,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 229386 states and 262152 transitions. [2020-10-26 03:55:54,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 03:55:54,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:54,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:54,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-26 03:55:54,946 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:54,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1929064908, now seen corresponding path program 1 times [2020-10-26 03:55:54,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:54,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110463418] [2020-10-26 03:55:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:54,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110463418] [2020-10-26 03:55:54,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:54,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:55,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537082750] [2020-10-26 03:55:55,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:55,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:55,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:55,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:55,002 INFO L87 Difference]: Start difference. First operand 229386 states and 262152 transitions. Second operand 4 states. [2020-10-26 03:55:56,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:56,833 INFO L93 Difference]: Finished difference Result 286727 states and 315398 transitions. [2020-10-26 03:55:56,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:56,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-26 03:55:56,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:56,834 INFO L225 Difference]: With dead ends: 286727 [2020-10-26 03:55:56,834 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:55:56,835 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 [2020-10-26 03:55:56,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:55:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:55:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:55:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:55:56,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-26 03:55:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:56,835 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:55:56,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:55:56,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:55:56,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-26 03:55:56,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:55:56 BoogieIcfgContainer [2020-10-26 03:55:56,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:55:56,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:55:56,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:55:56,841 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:55:56,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:20" (3/4) ... [2020-10-26 03:55:56,845 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:55:56,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-26 03:55:56,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:55:56,853 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:55:56,861 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-26 03:55:56,861 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 03:55:56,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-26 03:55:56,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:55:56,922 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:55:56,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:55:56,924 INFO L168 Benchmark]: Toolchain (without parser) took 37268.20 ms. Allocated memory was 46.1 MB in the beginning and 14.6 GB in the end (delta: 14.6 GB). Free memory was 24.1 MB in the beginning and 11.8 GB in the end (delta: -11.8 GB). Peak memory consumption was 2.8 GB. Max. memory is 16.1 GB. [2020-10-26 03:55:56,924 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 37.7 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:55:56,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.21 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 24.1 MB in the end (delta: -665.1 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:56,925 INFO L168 Benchmark]: Boogie Preprocessor took 47.73 ms. Allocated memory is still 46.1 MB. Free memory was 24.1 MB in the beginning and 22.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:56,926 INFO L168 Benchmark]: RCFGBuilder took 682.77 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.2 MB in the beginning and 30.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:56,926 INFO L168 Benchmark]: TraceAbstraction took 36106.80 ms. Allocated memory was 56.6 MB in the beginning and 14.6 GB in the end (delta: 14.6 GB). Free memory was 30.1 MB in the beginning and 11.8 GB in the end (delta: -11.8 GB). Peak memory consumption was 2.8 GB. Max. memory is 16.1 GB. [2020-10-26 03:55:56,926 INFO L168 Benchmark]: Witness Printer took 81.54 ms. Allocated memory is still 14.6 GB. Free memory was 11.8 GB in the beginning and 11.8 GB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:56,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 37.7 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.21 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 24.1 MB in the end (delta: -665.1 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.73 ms. Allocated memory is still 46.1 MB. Free memory was 24.1 MB in the beginning and 22.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 682.77 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.2 MB in the beginning and 30.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 36106.80 ms. Allocated memory was 56.6 MB in the beginning and 14.6 GB in the end (delta: 14.6 GB). Free memory was 30.1 MB in the beginning and 11.8 GB in the end (delta: -11.8 GB). Peak memory consumption was 2.8 GB. Max. memory is 16.1 GB. * Witness Printer took 81.54 ms. Allocated memory is still 14.6 GB. Free memory was 11.8 GB in the beginning and 11.8 GB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.0s, OverallIterations: 37, TraceHistogramMax: 1, AutomataDifference: 15.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4030 SDtfs, 5963 SDslu, 278 SDs, 0 SdLazy, 2828 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229386occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.0s AutomataMinimizationTime, 37 MinimizatonAttempts, 32772 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1131 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1094 ConstructedInterpolants, 0 QuantifiedInterpolants, 99116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 37 InterpolantComputations, 37 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...