./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_13.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:52:23,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:52:23,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:52:23,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:52:23,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:52:23,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:52:23,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:52:23,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:52:23,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:52:23,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:52:23,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:52:23,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:52:23,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:52:23,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:52:23,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:52:23,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:52:23,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:52:23,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:52:23,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:52:23,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:52:23,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:52:23,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:52:23,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:52:23,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:52:23,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:52:23,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:52:23,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:52:23,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:52:23,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:52:23,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:52:23,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:52:23,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:52:23,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:52:23,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:52:23,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:52:23,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:52:23,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:52:23,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:52:23,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:52:23,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:52:23,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:52:23,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 22:52:23,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:52:23,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:52:23,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:52:23,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:52:23,304 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:52:23,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:52:23,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:52:23,305 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:52:23,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:52:23,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:52:23,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:52:23,307 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 22:52:23,307 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 22:52:23,307 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 22:52:23,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:52:23,308 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 22:52:23,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:52:23,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:52:23,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:52:23,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:52:23,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:52:23,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:52:23,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:52:23,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:52:23,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:52:23,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:52:23,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:52:23,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:52:23,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 [2020-11-29 22:52:23,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:52:23,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:52:23,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:52:23,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:52:23,653 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:52:23,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_13.c [2020-11-29 22:52:23,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/data/5d272a158/2855fdbe8df1464eae6f639c1029d2b7/FLAGa0efec430 [2020-11-29 22:52:24,151 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:52:24,152 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/sv-benchmarks/c/locks/test_locks_13.c [2020-11-29 22:52:24,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/data/5d272a158/2855fdbe8df1464eae6f639c1029d2b7/FLAGa0efec430 [2020-11-29 22:52:24,550 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/data/5d272a158/2855fdbe8df1464eae6f639c1029d2b7 [2020-11-29 22:52:24,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:52:24,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 22:52:24,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:52:24,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:52:24,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:52:24,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3786f1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24, skipping insertion in model container [2020-11-29 22:52:24,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:52:24,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:52:24,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:52:24,782 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:52:24,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:52:24,825 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:52:24,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24 WrapperNode [2020-11-29 22:52:24,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:52:24,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:52:24,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:52:24,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:52:24,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (1/1) ... [2020-11-29 22:52:24,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:52:24,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:52:24,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:52:24,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:52:24,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:52:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 22:52:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:52:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 22:52:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 22:52:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 22:52:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 22:52:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 22:52:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:52:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 22:52:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 22:52:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 22:52:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:52:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:52:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:52:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:52:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:52:25,467 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:52:25,467 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-29 22:52:25,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:25 BoogieIcfgContainer [2020-11-29 22:52:25,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:52:25,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:52:25,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:52:25,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:52:25,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:52:24" (1/3) ... [2020-11-29 22:52:25,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47411178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:52:25, skipping insertion in model container [2020-11-29 22:52:25,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:24" (2/3) ... [2020-11-29 22:52:25,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47411178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:52:25, skipping insertion in model container [2020-11-29 22:52:25,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:25" (3/3) ... [2020-11-29 22:52:25,479 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2020-11-29 22:52:25,491 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:52:25,495 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 22:52:25,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 22:52:25,529 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:52:25,529 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 22:52:25,529 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:52:25,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:52:25,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:52:25,530 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:52:25,530 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:52:25,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:52:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-11-29 22:52:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:52:25,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:25,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:25,577 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:25,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1331697042, now seen corresponding path program 1 times [2020-11-29 22:52:25,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:25,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255990720] [2020-11-29 22:52:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:25,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255990720] [2020-11-29 22:52:25,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:25,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:52:25,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186812859] [2020-11-29 22:52:25,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:52:25,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:25,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:52:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:52:25,952 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-11-29 22:52:26,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:26,011 INFO L93 Difference]: Finished difference Result 55 states and 93 transitions. [2020-11-29 22:52:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:52:26,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 22:52:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:26,022 INFO L225 Difference]: With dead ends: 55 [2020-11-29 22:52:26,023 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 22:52:26,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:52:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 22:52:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 22:52:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 22:52:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 88 transitions. [2020-11-29 22:52:26,062 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 88 transitions. Word has length 9 [2020-11-29 22:52:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:26,062 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 88 transitions. [2020-11-29 22:52:26,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:52:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 88 transitions. [2020-11-29 22:52:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:52:26,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:26,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:26,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:52:26,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1784430188, now seen corresponding path program 1 times [2020-11-29 22:52:26,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:26,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302748064] [2020-11-29 22:52:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:26,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302748064] [2020-11-29 22:52:26,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:26,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:26,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685971889] [2020-11-29 22:52:26,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:26,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:26,260 INFO L87 Difference]: Start difference. First operand 50 states and 88 transitions. Second operand 4 states. [2020-11-29 22:52:26,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:26,635 INFO L93 Difference]: Finished difference Result 91 states and 166 transitions. [2020-11-29 22:52:26,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:26,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 22:52:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:26,638 INFO L225 Difference]: With dead ends: 91 [2020-11-29 22:52:26,639 INFO L226 Difference]: Without dead ends: 91 [2020-11-29 22:52:26,639 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 [2020-11-29 22:52:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-29 22:52:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2020-11-29 22:52:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-29 22:52:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 115 transitions. [2020-11-29 22:52:26,655 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 115 transitions. Word has length 25 [2020-11-29 22:52:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:26,657 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 115 transitions. [2020-11-29 22:52:26,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 115 transitions. [2020-11-29 22:52:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:52:26,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:26,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:26,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:52:26,661 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash 196082286, now seen corresponding path program 1 times [2020-11-29 22:52:26,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:26,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415228478] [2020-11-29 22:52:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:26,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:26,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415228478] [2020-11-29 22:52:26,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:26,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:26,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313362310] [2020-11-29 22:52:26,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:26,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:26,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:26,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:26,821 INFO L87 Difference]: Start difference. First operand 64 states and 115 transitions. Second operand 4 states. [2020-11-29 22:52:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:27,099 INFO L93 Difference]: Finished difference Result 91 states and 164 transitions. [2020-11-29 22:52:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:27,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 22:52:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:27,101 INFO L225 Difference]: With dead ends: 91 [2020-11-29 22:52:27,101 INFO L226 Difference]: Without dead ends: 91 [2020-11-29 22:52:27,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:27,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-29 22:52:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-11-29 22:52:27,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-29 22:52:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 163 transitions. [2020-11-29 22:52:27,119 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 163 transitions. Word has length 25 [2020-11-29 22:52:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:27,120 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 163 transitions. [2020-11-29 22:52:27,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 163 transitions. [2020-11-29 22:52:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:52:27,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:27,122 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] [2020-11-29 22:52:27,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:52:27,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:27,124 INFO L82 PathProgramCache]: Analyzing trace with hash -510661688, now seen corresponding path program 1 times [2020-11-29 22:52:27,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:27,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981903194] [2020-11-29 22:52:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:27,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:27,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981903194] [2020-11-29 22:52:27,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:27,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:27,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166838053] [2020-11-29 22:52:27,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:27,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:27,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:27,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:27,256 INFO L87 Difference]: Start difference. First operand 90 states and 163 transitions. Second operand 4 states. [2020-11-29 22:52:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:27,574 INFO L93 Difference]: Finished difference Result 94 states and 166 transitions. [2020-11-29 22:52:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:27,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-29 22:52:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:27,576 INFO L225 Difference]: With dead ends: 94 [2020-11-29 22:52:27,576 INFO L226 Difference]: Without dead ends: 94 [2020-11-29 22:52:27,576 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 [2020-11-29 22:52:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-29 22:52:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-11-29 22:52:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 22:52:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2020-11-29 22:52:27,592 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 26 [2020-11-29 22:52:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:27,592 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2020-11-29 22:52:27,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2020-11-29 22:52:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:52:27,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:27,595 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] [2020-11-29 22:52:27,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:52:27,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1790160902, now seen corresponding path program 1 times [2020-11-29 22:52:27,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:27,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274026596] [2020-11-29 22:52:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:27,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274026596] [2020-11-29 22:52:27,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:27,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:27,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976220975] [2020-11-29 22:52:27,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:27,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:27,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:27,717 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand 4 states. [2020-11-29 22:52:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:27,986 INFO L93 Difference]: Finished difference Result 173 states and 311 transitions. [2020-11-29 22:52:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:27,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-29 22:52:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:27,989 INFO L225 Difference]: With dead ends: 173 [2020-11-29 22:52:27,989 INFO L226 Difference]: Without dead ends: 173 [2020-11-29 22:52:27,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-11-29 22:52:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-11-29 22:52:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-29 22:52:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 310 transitions. [2020-11-29 22:52:28,013 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 310 transitions. Word has length 26 [2020-11-29 22:52:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:28,013 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 310 transitions. [2020-11-29 22:52:28,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 310 transitions. [2020-11-29 22:52:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:52:28,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:28,015 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] [2020-11-29 22:52:28,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:52:28,016 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:28,016 INFO L82 PathProgramCache]: Analyzing trace with hash -916458492, now seen corresponding path program 1 times [2020-11-29 22:52:28,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:28,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243771487] [2020-11-29 22:52:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:28,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:28,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243771487] [2020-11-29 22:52:28,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:28,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:28,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221818548] [2020-11-29 22:52:28,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:28,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:28,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:28,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:28,111 INFO L87 Difference]: Start difference. First operand 172 states and 310 transitions. Second operand 4 states. [2020-11-29 22:52:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:28,344 INFO L93 Difference]: Finished difference Result 221 states and 401 transitions. [2020-11-29 22:52:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:28,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-29 22:52:28,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:28,346 INFO L225 Difference]: With dead ends: 221 [2020-11-29 22:52:28,346 INFO L226 Difference]: Without dead ends: 221 [2020-11-29 22:52:28,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-11-29 22:52:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 172. [2020-11-29 22:52:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-29 22:52:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 308 transitions. [2020-11-29 22:52:28,365 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 308 transitions. Word has length 26 [2020-11-29 22:52:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:28,366 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 308 transitions. [2020-11-29 22:52:28,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 308 transitions. [2020-11-29 22:52:28,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 22:52:28,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:28,367 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] [2020-11-29 22:52:28,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:52:28,368 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:28,368 INFO L82 PathProgramCache]: Analyzing trace with hash -332998983, now seen corresponding path program 1 times [2020-11-29 22:52:28,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:28,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830147383] [2020-11-29 22:52:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:28,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:28,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830147383] [2020-11-29 22:52:28,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:28,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:28,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853019685] [2020-11-29 22:52:28,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:28,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:28,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:28,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:28,453 INFO L87 Difference]: Start difference. First operand 172 states and 308 transitions. Second operand 4 states. [2020-11-29 22:52:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:28,669 INFO L93 Difference]: Finished difference Result 321 states and 583 transitions. [2020-11-29 22:52:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:28,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 22:52:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:28,672 INFO L225 Difference]: With dead ends: 321 [2020-11-29 22:52:28,672 INFO L226 Difference]: Without dead ends: 321 [2020-11-29 22:52:28,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-11-29 22:52:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 232. [2020-11-29 22:52:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-29 22:52:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 414 transitions. [2020-11-29 22:52:28,686 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 414 transitions. Word has length 27 [2020-11-29 22:52:28,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:28,686 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 414 transitions. [2020-11-29 22:52:28,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:28,687 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 414 transitions. [2020-11-29 22:52:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 22:52:28,688 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:28,689 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] [2020-11-29 22:52:28,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:52:28,689 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:28,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1921346885, now seen corresponding path program 1 times [2020-11-29 22:52:28,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:28,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170722933] [2020-11-29 22:52:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:28,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170722933] [2020-11-29 22:52:28,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:28,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:28,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625646014] [2020-11-29 22:52:28,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:28,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:28,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:28,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:28,773 INFO L87 Difference]: Start difference. First operand 232 states and 414 transitions. Second operand 4 states. [2020-11-29 22:52:29,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:29,003 INFO L93 Difference]: Finished difference Result 329 states and 585 transitions. [2020-11-29 22:52:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:29,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 22:52:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:29,006 INFO L225 Difference]: With dead ends: 329 [2020-11-29 22:52:29,006 INFO L226 Difference]: Without dead ends: 329 [2020-11-29 22:52:29,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-11-29 22:52:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2020-11-29 22:52:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-11-29 22:52:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 584 transitions. [2020-11-29 22:52:29,020 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 584 transitions. Word has length 27 [2020-11-29 22:52:29,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:29,020 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 584 transitions. [2020-11-29 22:52:29,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 584 transitions. [2020-11-29 22:52:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:52:29,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:29,023 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] [2020-11-29 22:52:29,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 22:52:29,023 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:29,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:29,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1726435407, now seen corresponding path program 1 times [2020-11-29 22:52:29,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:29,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518127533] [2020-11-29 22:52:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:29,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:29,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518127533] [2020-11-29 22:52:29,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:29,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:29,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822045287] [2020-11-29 22:52:29,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:29,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:29,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:29,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:29,125 INFO L87 Difference]: Start difference. First operand 328 states and 584 transitions. Second operand 4 states. [2020-11-29 22:52:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:29,296 INFO L93 Difference]: Finished difference Result 335 states and 589 transitions. [2020-11-29 22:52:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:29,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 22:52:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:29,299 INFO L225 Difference]: With dead ends: 335 [2020-11-29 22:52:29,299 INFO L226 Difference]: Without dead ends: 335 [2020-11-29 22:52:29,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:29,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-11-29 22:52:29,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334. [2020-11-29 22:52:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-11-29 22:52:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 588 transitions. [2020-11-29 22:52:29,309 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 588 transitions. Word has length 28 [2020-11-29 22:52:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:29,315 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 588 transitions. [2020-11-29 22:52:29,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 588 transitions. [2020-11-29 22:52:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:52:29,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:29,323 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] [2020-11-29 22:52:29,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 22:52:29,323 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:29,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:29,324 INFO L82 PathProgramCache]: Analyzing trace with hash 574387183, now seen corresponding path program 1 times [2020-11-29 22:52:29,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:29,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460922645] [2020-11-29 22:52:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:29,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460922645] [2020-11-29 22:52:29,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:29,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:29,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162943161] [2020-11-29 22:52:29,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:29,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:29,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:29,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:29,430 INFO L87 Difference]: Start difference. First operand 334 states and 588 transitions. Second operand 4 states. [2020-11-29 22:52:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:29,636 INFO L93 Difference]: Finished difference Result 619 states and 1101 transitions. [2020-11-29 22:52:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:29,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 22:52:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:29,648 INFO L225 Difference]: With dead ends: 619 [2020-11-29 22:52:29,649 INFO L226 Difference]: Without dead ends: 619 [2020-11-29 22:52:29,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:29,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-11-29 22:52:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 458. [2020-11-29 22:52:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-11-29 22:52:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 796 transitions. [2020-11-29 22:52:29,665 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 796 transitions. Word has length 28 [2020-11-29 22:52:29,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:29,665 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 796 transitions. [2020-11-29 22:52:29,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 796 transitions. [2020-11-29 22:52:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 22:52:29,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:29,669 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] [2020-11-29 22:52:29,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 22:52:29,669 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:29,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1013960719, now seen corresponding path program 1 times [2020-11-29 22:52:29,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:29,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437322555] [2020-11-29 22:52:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:29,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:29,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437322555] [2020-11-29 22:52:29,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:29,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:29,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274177019] [2020-11-29 22:52:29,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:29,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:29,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:29,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:29,741 INFO L87 Difference]: Start difference. First operand 458 states and 796 transitions. Second operand 4 states. [2020-11-29 22:52:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:29,939 INFO L93 Difference]: Finished difference Result 643 states and 1113 transitions. [2020-11-29 22:52:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:29,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 22:52:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:29,944 INFO L225 Difference]: With dead ends: 643 [2020-11-29 22:52:29,944 INFO L226 Difference]: Without dead ends: 643 [2020-11-29 22:52:29,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-29 22:52:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 642. [2020-11-29 22:52:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-29 22:52:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1112 transitions. [2020-11-29 22:52:29,964 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1112 transitions. Word has length 28 [2020-11-29 22:52:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:29,965 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 1112 transitions. [2020-11-29 22:52:29,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1112 transitions. [2020-11-29 22:52:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:52:29,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:29,970 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] [2020-11-29 22:52:29,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 22:52:29,971 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:29,971 INFO L82 PathProgramCache]: Analyzing trace with hash 632742534, now seen corresponding path program 1 times [2020-11-29 22:52:29,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:29,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729210824] [2020-11-29 22:52:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:30,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:30,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729210824] [2020-11-29 22:52:30,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:30,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:30,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230805843] [2020-11-29 22:52:30,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:30,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:30,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:30,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:30,039 INFO L87 Difference]: Start difference. First operand 642 states and 1112 transitions. Second operand 4 states. [2020-11-29 22:52:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:30,277 INFO L93 Difference]: Finished difference Result 651 states and 1113 transitions. [2020-11-29 22:52:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:30,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 22:52:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:30,281 INFO L225 Difference]: With dead ends: 651 [2020-11-29 22:52:30,281 INFO L226 Difference]: Without dead ends: 651 [2020-11-29 22:52:30,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-11-29 22:52:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 650. [2020-11-29 22:52:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-11-29 22:52:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1112 transitions. [2020-11-29 22:52:30,302 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1112 transitions. Word has length 29 [2020-11-29 22:52:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:30,303 INFO L481 AbstractCegarLoop]: Abstraction has 650 states and 1112 transitions. [2020-11-29 22:52:30,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1112 transitions. [2020-11-29 22:52:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:52:30,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:30,305 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] [2020-11-29 22:52:30,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 22:52:30,306 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:30,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1361402172, now seen corresponding path program 1 times [2020-11-29 22:52:30,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:30,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267753599] [2020-11-29 22:52:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:30,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:30,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267753599] [2020-11-29 22:52:30,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:30,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:30,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198587324] [2020-11-29 22:52:30,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:30,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:30,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:30,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:30,393 INFO L87 Difference]: Start difference. First operand 650 states and 1112 transitions. Second operand 4 states. [2020-11-29 22:52:30,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:30,605 INFO L93 Difference]: Finished difference Result 1195 states and 2065 transitions. [2020-11-29 22:52:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:30,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 22:52:30,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:30,612 INFO L225 Difference]: With dead ends: 1195 [2020-11-29 22:52:30,612 INFO L226 Difference]: Without dead ends: 1195 [2020-11-29 22:52:30,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-11-29 22:52:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 906. [2020-11-29 22:52:30,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-11-29 22:52:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1520 transitions. [2020-11-29 22:52:30,643 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1520 transitions. Word has length 29 [2020-11-29 22:52:30,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:30,644 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1520 transitions. [2020-11-29 22:52:30,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1520 transitions. [2020-11-29 22:52:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:52:30,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:30,646 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] [2020-11-29 22:52:30,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 22:52:30,646 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:30,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1345217222, now seen corresponding path program 1 times [2020-11-29 22:52:30,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:30,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248107353] [2020-11-29 22:52:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:30,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248107353] [2020-11-29 22:52:30,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:30,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:30,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328333654] [2020-11-29 22:52:30,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:30,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:30,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:30,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:30,722 INFO L87 Difference]: Start difference. First operand 906 states and 1520 transitions. Second operand 4 states. [2020-11-29 22:52:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:30,934 INFO L93 Difference]: Finished difference Result 1259 states and 2105 transitions. [2020-11-29 22:52:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:30,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 22:52:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:30,942 INFO L225 Difference]: With dead ends: 1259 [2020-11-29 22:52:30,942 INFO L226 Difference]: Without dead ends: 1259 [2020-11-29 22:52:30,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:30,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2020-11-29 22:52:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1258. [2020-11-29 22:52:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-11-29 22:52:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2104 transitions. [2020-11-29 22:52:30,978 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2104 transitions. Word has length 29 [2020-11-29 22:52:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:30,978 INFO L481 AbstractCegarLoop]: Abstraction has 1258 states and 2104 transitions. [2020-11-29 22:52:30,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2104 transitions. [2020-11-29 22:52:30,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 22:52:30,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:30,980 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] [2020-11-29 22:52:30,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 22:52:30,981 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:30,981 INFO L82 PathProgramCache]: Analyzing trace with hash 752825244, now seen corresponding path program 1 times [2020-11-29 22:52:30,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:30,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063152964] [2020-11-29 22:52:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:31,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063152964] [2020-11-29 22:52:31,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:31,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:31,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099883688] [2020-11-29 22:52:31,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:31,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:31,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:31,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:31,064 INFO L87 Difference]: Start difference. First operand 1258 states and 2104 transitions. Second operand 4 states. [2020-11-29 22:52:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:31,292 INFO L93 Difference]: Finished difference Result 1275 states and 2105 transitions. [2020-11-29 22:52:31,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:31,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 22:52:31,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:31,300 INFO L225 Difference]: With dead ends: 1275 [2020-11-29 22:52:31,300 INFO L226 Difference]: Without dead ends: 1275 [2020-11-29 22:52:31,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-11-29 22:52:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1274. [2020-11-29 22:52:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-11-29 22:52:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2104 transitions. [2020-11-29 22:52:31,338 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2104 transitions. Word has length 30 [2020-11-29 22:52:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:31,338 INFO L481 AbstractCegarLoop]: Abstraction has 1274 states and 2104 transitions. [2020-11-29 22:52:31,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2104 transitions. [2020-11-29 22:52:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 22:52:31,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:31,340 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] [2020-11-29 22:52:31,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 22:52:31,340 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:31,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1241319462, now seen corresponding path program 1 times [2020-11-29 22:52:31,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:31,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053072460] [2020-11-29 22:52:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:31,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053072460] [2020-11-29 22:52:31,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:31,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:31,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117925106] [2020-11-29 22:52:31,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:31,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:31,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:31,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:31,403 INFO L87 Difference]: Start difference. First operand 1274 states and 2104 transitions. Second operand 4 states. [2020-11-29 22:52:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:31,631 INFO L93 Difference]: Finished difference Result 2315 states and 3865 transitions. [2020-11-29 22:52:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:31,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 22:52:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:31,644 INFO L225 Difference]: With dead ends: 2315 [2020-11-29 22:52:31,644 INFO L226 Difference]: Without dead ends: 2315 [2020-11-29 22:52:31,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-11-29 22:52:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1802. [2020-11-29 22:52:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-11-29 22:52:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2904 transitions. [2020-11-29 22:52:31,698 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2904 transitions. Word has length 30 [2020-11-29 22:52:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:31,699 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 2904 transitions. [2020-11-29 22:52:31,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2904 transitions. [2020-11-29 22:52:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 22:52:31,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:31,702 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] [2020-11-29 22:52:31,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 22:52:31,702 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:31,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:31,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1465299932, now seen corresponding path program 1 times [2020-11-29 22:52:31,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:31,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107740742] [2020-11-29 22:52:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:31,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:31,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107740742] [2020-11-29 22:52:31,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:31,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:31,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040755107] [2020-11-29 22:52:31,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:31,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:31,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:31,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:31,762 INFO L87 Difference]: Start difference. First operand 1802 states and 2904 transitions. Second operand 4 states. [2020-11-29 22:52:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:31,965 INFO L93 Difference]: Finished difference Result 2475 states and 3977 transitions. [2020-11-29 22:52:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:31,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 22:52:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:31,979 INFO L225 Difference]: With dead ends: 2475 [2020-11-29 22:52:31,979 INFO L226 Difference]: Without dead ends: 2475 [2020-11-29 22:52:31,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2020-11-29 22:52:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2474. [2020-11-29 22:52:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2020-11-29 22:52:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3976 transitions. [2020-11-29 22:52:32,075 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3976 transitions. Word has length 30 [2020-11-29 22:52:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:32,075 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3976 transitions. [2020-11-29 22:52:32,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3976 transitions. [2020-11-29 22:52:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:52:32,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:32,078 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] [2020-11-29 22:52:32,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 22:52:32,079 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:32,079 INFO L82 PathProgramCache]: Analyzing trace with hash 180432529, now seen corresponding path program 1 times [2020-11-29 22:52:32,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:32,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424072065] [2020-11-29 22:52:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:32,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424072065] [2020-11-29 22:52:32,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:32,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:32,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122448182] [2020-11-29 22:52:32,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:32,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:32,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:32,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:32,139 INFO L87 Difference]: Start difference. First operand 2474 states and 3976 transitions. Second operand 4 states. [2020-11-29 22:52:32,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:32,342 INFO L93 Difference]: Finished difference Result 2507 states and 3977 transitions. [2020-11-29 22:52:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:32,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 22:52:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:32,358 INFO L225 Difference]: With dead ends: 2507 [2020-11-29 22:52:32,358 INFO L226 Difference]: Without dead ends: 2507 [2020-11-29 22:52:32,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-11-29 22:52:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2506. [2020-11-29 22:52:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2020-11-29 22:52:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3976 transitions. [2020-11-29 22:52:32,426 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3976 transitions. Word has length 31 [2020-11-29 22:52:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:32,427 INFO L481 AbstractCegarLoop]: Abstraction has 2506 states and 3976 transitions. [2020-11-29 22:52:32,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3976 transitions. [2020-11-29 22:52:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:52:32,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:32,430 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] [2020-11-29 22:52:32,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 22:52:32,430 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1813712177, now seen corresponding path program 1 times [2020-11-29 22:52:32,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:32,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080030081] [2020-11-29 22:52:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:32,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080030081] [2020-11-29 22:52:32,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:32,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:32,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772353154] [2020-11-29 22:52:32,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:32,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:32,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:32,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:32,488 INFO L87 Difference]: Start difference. First operand 2506 states and 3976 transitions. Second operand 4 states. [2020-11-29 22:52:32,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:32,737 INFO L93 Difference]: Finished difference Result 4491 states and 7209 transitions. [2020-11-29 22:52:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:32,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 22:52:32,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:32,764 INFO L225 Difference]: With dead ends: 4491 [2020-11-29 22:52:32,764 INFO L226 Difference]: Without dead ends: 4491 [2020-11-29 22:52:32,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2020-11-29 22:52:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 3594. [2020-11-29 22:52:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-11-29 22:52:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5544 transitions. [2020-11-29 22:52:32,858 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5544 transitions. Word has length 31 [2020-11-29 22:52:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:32,858 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 5544 transitions. [2020-11-29 22:52:32,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5544 transitions. [2020-11-29 22:52:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:52:32,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:32,864 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] [2020-11-29 22:52:32,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 22:52:32,864 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:32,865 INFO L82 PathProgramCache]: Analyzing trace with hash 892907217, now seen corresponding path program 1 times [2020-11-29 22:52:32,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:32,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963361688] [2020-11-29 22:52:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:32,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963361688] [2020-11-29 22:52:32,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:32,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:32,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646216219] [2020-11-29 22:52:32,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:32,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:32,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:32,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:32,933 INFO L87 Difference]: Start difference. First operand 3594 states and 5544 transitions. Second operand 4 states. [2020-11-29 22:52:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:33,137 INFO L93 Difference]: Finished difference Result 4875 states and 7497 transitions. [2020-11-29 22:52:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:33,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 22:52:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:33,182 INFO L225 Difference]: With dead ends: 4875 [2020-11-29 22:52:33,182 INFO L226 Difference]: Without dead ends: 4875 [2020-11-29 22:52:33,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2020-11-29 22:52:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4874. [2020-11-29 22:52:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4874 states. [2020-11-29 22:52:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 7496 transitions. [2020-11-29 22:52:33,315 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 7496 transitions. Word has length 31 [2020-11-29 22:52:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:33,316 INFO L481 AbstractCegarLoop]: Abstraction has 4874 states and 7496 transitions. [2020-11-29 22:52:33,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 7496 transitions. [2020-11-29 22:52:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:52:33,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:33,321 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] [2020-11-29 22:52:33,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 22:52:33,322 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:33,323 INFO L82 PathProgramCache]: Analyzing trace with hash -383861881, now seen corresponding path program 1 times [2020-11-29 22:52:33,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:33,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89911780] [2020-11-29 22:52:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:33,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89911780] [2020-11-29 22:52:33,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:33,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:33,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714488454] [2020-11-29 22:52:33,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:33,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:33,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:33,389 INFO L87 Difference]: Start difference. First operand 4874 states and 7496 transitions. Second operand 4 states. [2020-11-29 22:52:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:33,584 INFO L93 Difference]: Finished difference Result 4939 states and 7497 transitions. [2020-11-29 22:52:33,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:33,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-29 22:52:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:33,595 INFO L225 Difference]: With dead ends: 4939 [2020-11-29 22:52:33,595 INFO L226 Difference]: Without dead ends: 4939 [2020-11-29 22:52:33,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2020-11-29 22:52:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4938. [2020-11-29 22:52:33,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4938 states. [2020-11-29 22:52:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 7496 transitions. [2020-11-29 22:52:33,732 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 7496 transitions. Word has length 32 [2020-11-29 22:52:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:33,732 INFO L481 AbstractCegarLoop]: Abstraction has 4938 states and 7496 transitions. [2020-11-29 22:52:33,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:33,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 7496 transitions. [2020-11-29 22:52:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:52:33,741 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:33,742 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] [2020-11-29 22:52:33,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 22:52:33,742 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:33,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:33,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1916960709, now seen corresponding path program 1 times [2020-11-29 22:52:33,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:33,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370699656] [2020-11-29 22:52:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:33,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370699656] [2020-11-29 22:52:33,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:33,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:33,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878624263] [2020-11-29 22:52:33,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:33,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:33,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:33,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:33,805 INFO L87 Difference]: Start difference. First operand 4938 states and 7496 transitions. Second operand 4 states. [2020-11-29 22:52:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:34,020 INFO L93 Difference]: Finished difference Result 8715 states and 13385 transitions. [2020-11-29 22:52:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:34,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-29 22:52:34,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:34,036 INFO L225 Difference]: With dead ends: 8715 [2020-11-29 22:52:34,036 INFO L226 Difference]: Without dead ends: 8715 [2020-11-29 22:52:34,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2020-11-29 22:52:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 7178. [2020-11-29 22:52:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7178 states. [2020-11-29 22:52:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 10568 transitions. [2020-11-29 22:52:34,207 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 10568 transitions. Word has length 32 [2020-11-29 22:52:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:34,207 INFO L481 AbstractCegarLoop]: Abstraction has 7178 states and 10568 transitions. [2020-11-29 22:52:34,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 10568 transitions. [2020-11-29 22:52:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:52:34,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:34,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:34,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 22:52:34,218 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:34,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:34,218 INFO L82 PathProgramCache]: Analyzing trace with hash 328612807, now seen corresponding path program 1 times [2020-11-29 22:52:34,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:34,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427059942] [2020-11-29 22:52:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:34,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:34,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427059942] [2020-11-29 22:52:34,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:34,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:34,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864317090] [2020-11-29 22:52:34,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:34,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:34,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:34,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:34,285 INFO L87 Difference]: Start difference. First operand 7178 states and 10568 transitions. Second operand 4 states. [2020-11-29 22:52:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:34,504 INFO L93 Difference]: Finished difference Result 9611 states and 14089 transitions. [2020-11-29 22:52:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:34,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-29 22:52:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:34,521 INFO L225 Difference]: With dead ends: 9611 [2020-11-29 22:52:34,521 INFO L226 Difference]: Without dead ends: 9611 [2020-11-29 22:52:34,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9611 states. [2020-11-29 22:52:34,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9611 to 9610. [2020-11-29 22:52:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9610 states. [2020-11-29 22:52:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 14088 transitions. [2020-11-29 22:52:34,724 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 14088 transitions. Word has length 32 [2020-11-29 22:52:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:34,724 INFO L481 AbstractCegarLoop]: Abstraction has 9610 states and 14088 transitions. [2020-11-29 22:52:34,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 14088 transitions. [2020-11-29 22:52:34,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:52:34,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:34,737 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] [2020-11-29 22:52:34,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 22:52:34,737 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:34,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash -697108836, now seen corresponding path program 1 times [2020-11-29 22:52:34,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:34,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57956769] [2020-11-29 22:52:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:34,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57956769] [2020-11-29 22:52:34,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:34,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:34,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869594618] [2020-11-29 22:52:34,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:34,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:34,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:34,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:34,798 INFO L87 Difference]: Start difference. First operand 9610 states and 14088 transitions. Second operand 4 states. [2020-11-29 22:52:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:35,029 INFO L93 Difference]: Finished difference Result 9739 states and 14089 transitions. [2020-11-29 22:52:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:35,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-29 22:52:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:35,048 INFO L225 Difference]: With dead ends: 9739 [2020-11-29 22:52:35,048 INFO L226 Difference]: Without dead ends: 9739 [2020-11-29 22:52:35,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2020-11-29 22:52:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 9738. [2020-11-29 22:52:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9738 states. [2020-11-29 22:52:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 14088 transitions. [2020-11-29 22:52:35,228 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 14088 transitions. Word has length 33 [2020-11-29 22:52:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:35,229 INFO L481 AbstractCegarLoop]: Abstraction has 9738 states and 14088 transitions. [2020-11-29 22:52:35,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:35,229 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 14088 transitions. [2020-11-29 22:52:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:52:35,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:35,239 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] [2020-11-29 22:52:35,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 22:52:35,240 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:35,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1603713754, now seen corresponding path program 1 times [2020-11-29 22:52:35,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:35,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166933597] [2020-11-29 22:52:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:35,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:35,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166933597] [2020-11-29 22:52:35,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:35,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:35,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7382811] [2020-11-29 22:52:35,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:35,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:35,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:35,302 INFO L87 Difference]: Start difference. First operand 9738 states and 14088 transitions. Second operand 4 states. [2020-11-29 22:52:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:35,527 INFO L93 Difference]: Finished difference Result 16907 states and 24713 transitions. [2020-11-29 22:52:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:35,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-29 22:52:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:35,556 INFO L225 Difference]: With dead ends: 16907 [2020-11-29 22:52:35,556 INFO L226 Difference]: Without dead ends: 16907 [2020-11-29 22:52:35,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:35,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16907 states. [2020-11-29 22:52:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16907 to 14346. [2020-11-29 22:52:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14346 states. [2020-11-29 22:52:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14346 states to 14346 states and 20104 transitions. [2020-11-29 22:52:35,790 INFO L78 Accepts]: Start accepts. Automaton has 14346 states and 20104 transitions. Word has length 33 [2020-11-29 22:52:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:35,790 INFO L481 AbstractCegarLoop]: Abstraction has 14346 states and 20104 transitions. [2020-11-29 22:52:35,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 14346 states and 20104 transitions. [2020-11-29 22:52:35,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:52:35,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:35,812 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] [2020-11-29 22:52:35,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 22:52:35,813 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:35,813 INFO L82 PathProgramCache]: Analyzing trace with hash 15365852, now seen corresponding path program 1 times [2020-11-29 22:52:35,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:35,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705520502] [2020-11-29 22:52:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:35,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:35,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705520502] [2020-11-29 22:52:35,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:35,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:35,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80623444] [2020-11-29 22:52:35,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:35,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:35,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:35,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:35,872 INFO L87 Difference]: Start difference. First operand 14346 states and 20104 transitions. Second operand 4 states. [2020-11-29 22:52:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:36,190 INFO L93 Difference]: Finished difference Result 18955 states and 26377 transitions. [2020-11-29 22:52:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:36,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-29 22:52:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:36,224 INFO L225 Difference]: With dead ends: 18955 [2020-11-29 22:52:36,224 INFO L226 Difference]: Without dead ends: 18955 [2020-11-29 22:52:36,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18955 states. [2020-11-29 22:52:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18955 to 18954. [2020-11-29 22:52:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18954 states. [2020-11-29 22:52:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18954 states to 18954 states and 26376 transitions. [2020-11-29 22:52:36,546 INFO L78 Accepts]: Start accepts. Automaton has 18954 states and 26376 transitions. Word has length 33 [2020-11-29 22:52:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:36,547 INFO L481 AbstractCegarLoop]: Abstraction has 18954 states and 26376 transitions. [2020-11-29 22:52:36,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 18954 states and 26376 transitions. [2020-11-29 22:52:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:52:36,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:36,566 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, 1, 1, 1, 1, 1] [2020-11-29 22:52:36,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 22:52:36,567 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:36,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1817819278, now seen corresponding path program 1 times [2020-11-29 22:52:36,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:36,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334779945] [2020-11-29 22:52:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:36,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334779945] [2020-11-29 22:52:36,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:36,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:36,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655892686] [2020-11-29 22:52:36,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:36,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:36,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:36,625 INFO L87 Difference]: Start difference. First operand 18954 states and 26376 transitions. Second operand 4 states. [2020-11-29 22:52:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:36,872 INFO L93 Difference]: Finished difference Result 19211 states and 26377 transitions. [2020-11-29 22:52:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:36,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-11-29 22:52:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:36,906 INFO L225 Difference]: With dead ends: 19211 [2020-11-29 22:52:36,907 INFO L226 Difference]: Without dead ends: 19211 [2020-11-29 22:52:36,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19211 states. [2020-11-29 22:52:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19211 to 19210. [2020-11-29 22:52:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19210 states. [2020-11-29 22:52:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19210 states to 19210 states and 26376 transitions. [2020-11-29 22:52:37,241 INFO L78 Accepts]: Start accepts. Automaton has 19210 states and 26376 transitions. Word has length 34 [2020-11-29 22:52:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:37,242 INFO L481 AbstractCegarLoop]: Abstraction has 19210 states and 26376 transitions. [2020-11-29 22:52:37,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 19210 states and 26376 transitions. [2020-11-29 22:52:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:52:37,257 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:37,257 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] [2020-11-29 22:52:37,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 22:52:37,258 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:37,258 INFO L82 PathProgramCache]: Analyzing trace with hash 483003312, now seen corresponding path program 1 times [2020-11-29 22:52:37,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:37,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617552457] [2020-11-29 22:52:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:37,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617552457] [2020-11-29 22:52:37,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:37,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:37,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116376469] [2020-11-29 22:52:37,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:37,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:37,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:37,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:37,319 INFO L87 Difference]: Start difference. First operand 19210 states and 26376 transitions. Second operand 4 states. [2020-11-29 22:52:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:37,700 INFO L93 Difference]: Finished difference Result 37387 states and 49673 transitions. [2020-11-29 22:52:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:37,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-11-29 22:52:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:37,765 INFO L225 Difference]: With dead ends: 37387 [2020-11-29 22:52:37,765 INFO L226 Difference]: Without dead ends: 37387 [2020-11-29 22:52:37,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:37,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37387 states. [2020-11-29 22:52:38,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37387 to 37386. [2020-11-29 22:52:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-11-29 22:52:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 49672 transitions. [2020-11-29 22:52:38,380 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 49672 transitions. Word has length 34 [2020-11-29 22:52:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:38,380 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 49672 transitions. [2020-11-29 22:52:38,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 49672 transitions. [2020-11-29 22:52:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:52:38,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:38,413 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] [2020-11-29 22:52:38,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 22:52:38,413 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:38,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2071351214, now seen corresponding path program 1 times [2020-11-29 22:52:38,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:38,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107315453] [2020-11-29 22:52:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:38,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:38,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107315453] [2020-11-29 22:52:38,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:38,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:38,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811317545] [2020-11-29 22:52:38,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:38,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:38,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:38,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:38,498 INFO L87 Difference]: Start difference. First operand 37386 states and 49672 transitions. Second operand 4 states. [2020-11-29 22:52:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:38,789 INFO L93 Difference]: Finished difference Result 41483 states and 56329 transitions. [2020-11-29 22:52:38,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:38,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-11-29 22:52:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:38,850 INFO L225 Difference]: With dead ends: 41483 [2020-11-29 22:52:38,850 INFO L226 Difference]: Without dead ends: 41483 [2020-11-29 22:52:38,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41483 states. [2020-11-29 22:52:39,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41483 to 37386. [2020-11-29 22:52:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-11-29 22:52:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 49160 transitions. [2020-11-29 22:52:39,533 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 49160 transitions. Word has length 34 [2020-11-29 22:52:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:39,533 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 49160 transitions. [2020-11-29 22:52:39,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 49160 transitions. [2020-11-29 22:52:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 22:52:39,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:39,556 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] [2020-11-29 22:52:39,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 22:52:39,556 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:39,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:39,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2094873255, now seen corresponding path program 1 times [2020-11-29 22:52:39,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:39,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245671914] [2020-11-29 22:52:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:39,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245671914] [2020-11-29 22:52:39,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:39,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:39,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754985097] [2020-11-29 22:52:39,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:39,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:39,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:39,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:39,614 INFO L87 Difference]: Start difference. First operand 37386 states and 49160 transitions. Second operand 4 states. [2020-11-29 22:52:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:40,146 INFO L93 Difference]: Finished difference Result 62987 states and 82953 transitions. [2020-11-29 22:52:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:40,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 22:52:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:40,250 INFO L225 Difference]: With dead ends: 62987 [2020-11-29 22:52:40,250 INFO L226 Difference]: Without dead ends: 62987 [2020-11-29 22:52:40,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62987 states. [2020-11-29 22:52:40,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62987 to 56842. [2020-11-29 22:52:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56842 states. [2020-11-29 22:52:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56842 states to 56842 states and 72712 transitions. [2020-11-29 22:52:40,988 INFO L78 Accepts]: Start accepts. Automaton has 56842 states and 72712 transitions. Word has length 35 [2020-11-29 22:52:40,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:40,988 INFO L481 AbstractCegarLoop]: Abstraction has 56842 states and 72712 transitions. [2020-11-29 22:52:40,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 56842 states and 72712 transitions. [2020-11-29 22:52:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 22:52:41,209 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:41,209 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] [2020-11-29 22:52:41,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-29 22:52:41,209 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:41,210 INFO L82 PathProgramCache]: Analyzing trace with hash 506525353, now seen corresponding path program 1 times [2020-11-29 22:52:41,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:41,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278208461] [2020-11-29 22:52:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:41,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278208461] [2020-11-29 22:52:41,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:41,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:41,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642461496] [2020-11-29 22:52:41,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:41,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:41,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:41,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:41,355 INFO L87 Difference]: Start difference. First operand 56842 states and 72712 transitions. Second operand 4 states. [2020-11-29 22:52:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:41,689 INFO L93 Difference]: Finished difference Result 73227 states and 92169 transitions. [2020-11-29 22:52:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:41,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 22:52:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:41,766 INFO L225 Difference]: With dead ends: 73227 [2020-11-29 22:52:41,767 INFO L226 Difference]: Without dead ends: 73227 [2020-11-29 22:52:41,767 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 [2020-11-29 22:52:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73227 states. [2020-11-29 22:52:42,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73227 to 73226. [2020-11-29 22:52:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73226 states. [2020-11-29 22:52:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73226 states to 73226 states and 92168 transitions. [2020-11-29 22:52:42,997 INFO L78 Accepts]: Start accepts. Automaton has 73226 states and 92168 transitions. Word has length 35 [2020-11-29 22:52:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:42,998 INFO L481 AbstractCegarLoop]: Abstraction has 73226 states and 92168 transitions. [2020-11-29 22:52:42,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 73226 states and 92168 transitions. [2020-11-29 22:52:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:52:43,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:43,046 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] [2020-11-29 22:52:43,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-29 22:52:43,047 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:43,048 INFO L82 PathProgramCache]: Analyzing trace with hash 523244507, now seen corresponding path program 1 times [2020-11-29 22:52:43,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:43,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189358142] [2020-11-29 22:52:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:43,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189358142] [2020-11-29 22:52:43,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:43,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:43,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758400360] [2020-11-29 22:52:43,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:43,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:43,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:43,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:43,110 INFO L87 Difference]: Start difference. First operand 73226 states and 92168 transitions. Second operand 4 states. [2020-11-29 22:52:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:43,820 INFO L93 Difference]: Finished difference Result 74763 states and 93193 transitions. [2020-11-29 22:52:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:43,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-11-29 22:52:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:43,909 INFO L225 Difference]: With dead ends: 74763 [2020-11-29 22:52:43,909 INFO L226 Difference]: Without dead ends: 74763 [2020-11-29 22:52:43,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74763 states. [2020-11-29 22:52:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74763 to 74762. [2020-11-29 22:52:44,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74762 states. [2020-11-29 22:52:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74762 states to 74762 states and 93192 transitions. [2020-11-29 22:52:44,874 INFO L78 Accepts]: Start accepts. Automaton has 74762 states and 93192 transitions. Word has length 36 [2020-11-29 22:52:44,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:44,875 INFO L481 AbstractCegarLoop]: Abstraction has 74762 states and 93192 transitions. [2020-11-29 22:52:44,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 74762 states and 93192 transitions. [2020-11-29 22:52:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:52:44,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:44,910 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] [2020-11-29 22:52:44,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-29 22:52:44,910 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1470900199, now seen corresponding path program 1 times [2020-11-29 22:52:44,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:44,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966999036] [2020-11-29 22:52:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:44,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:44,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966999036] [2020-11-29 22:52:44,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:44,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:44,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688241229] [2020-11-29 22:52:44,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:44,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:44,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:44,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:44,979 INFO L87 Difference]: Start difference. First operand 74762 states and 93192 transitions. Second operand 4 states. [2020-11-29 22:52:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:45,902 INFO L93 Difference]: Finished difference Result 122891 states and 151561 transitions. [2020-11-29 22:52:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:45,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-11-29 22:52:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:46,013 INFO L225 Difference]: With dead ends: 122891 [2020-11-29 22:52:46,013 INFO L226 Difference]: Without dead ends: 122891 [2020-11-29 22:52:46,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122891 states. [2020-11-29 22:52:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122891 to 114698. [2020-11-29 22:52:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114698 states. [2020-11-29 22:52:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114698 states to 114698 states and 139272 transitions. [2020-11-29 22:52:47,962 INFO L78 Accepts]: Start accepts. Automaton has 114698 states and 139272 transitions. Word has length 36 [2020-11-29 22:52:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:47,962 INFO L481 AbstractCegarLoop]: Abstraction has 114698 states and 139272 transitions. [2020-11-29 22:52:47,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 114698 states and 139272 transitions. [2020-11-29 22:52:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:52:48,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:48,029 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] [2020-11-29 22:52:48,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-29 22:52:48,029 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:48,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1235719195, now seen corresponding path program 1 times [2020-11-29 22:52:48,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:48,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419934707] [2020-11-29 22:52:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:48,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:48,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419934707] [2020-11-29 22:52:48,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:48,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:48,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117185853] [2020-11-29 22:52:48,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:48,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:48,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:48,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:48,098 INFO L87 Difference]: Start difference. First operand 114698 states and 139272 transitions. Second operand 4 states. [2020-11-29 22:52:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:48,558 INFO L93 Difference]: Finished difference Result 145419 states and 172041 transitions. [2020-11-29 22:52:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:48,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-11-29 22:52:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:48,688 INFO L225 Difference]: With dead ends: 145419 [2020-11-29 22:52:48,688 INFO L226 Difference]: Without dead ends: 145419 [2020-11-29 22:52:48,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145419 states. [2020-11-29 22:52:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145419 to 145418. [2020-11-29 22:52:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145418 states. [2020-11-29 22:52:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145418 states to 145418 states and 172040 transitions. [2020-11-29 22:52:50,474 INFO L78 Accepts]: Start accepts. Automaton has 145418 states and 172040 transitions. Word has length 36 [2020-11-29 22:52:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:50,474 INFO L481 AbstractCegarLoop]: Abstraction has 145418 states and 172040 transitions. [2020-11-29 22:52:50,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 145418 states and 172040 transitions. [2020-11-29 22:52:50,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 22:52:50,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:50,547 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] [2020-11-29 22:52:50,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-29 22:52:50,547 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1653427700, now seen corresponding path program 1 times [2020-11-29 22:52:50,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:50,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936991392] [2020-11-29 22:52:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:50,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:50,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936991392] [2020-11-29 22:52:50,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:50,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:50,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086729548] [2020-11-29 22:52:50,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:50,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:50,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:50,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:50,605 INFO L87 Difference]: Start difference. First operand 145418 states and 172040 transitions. Second operand 4 states. [2020-11-29 22:52:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:51,836 INFO L93 Difference]: Finished difference Result 147467 states and 172041 transitions. [2020-11-29 22:52:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:51,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-11-29 22:52:51,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:52,007 INFO L225 Difference]: With dead ends: 147467 [2020-11-29 22:52:52,007 INFO L226 Difference]: Without dead ends: 147467 [2020-11-29 22:52:52,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:52:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147467 states. [2020-11-29 22:52:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147467 to 147466. [2020-11-29 22:52:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147466 states. [2020-11-29 22:52:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147466 states to 147466 states and 172040 transitions. [2020-11-29 22:52:53,775 INFO L78 Accepts]: Start accepts. Automaton has 147466 states and 172040 transitions. Word has length 37 [2020-11-29 22:52:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:53,775 INFO L481 AbstractCegarLoop]: Abstraction has 147466 states and 172040 transitions. [2020-11-29 22:52:53,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:53,775 INFO L276 IsEmpty]: Start isEmpty. Operand 147466 states and 172040 transitions. [2020-11-29 22:52:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 22:52:54,437 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:54,438 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] [2020-11-29 22:52:54,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-29 22:52:54,438 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:54,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:54,439 INFO L82 PathProgramCache]: Analyzing trace with hash -340717006, now seen corresponding path program 1 times [2020-11-29 22:52:54,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:54,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681313467] [2020-11-29 22:52:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:54,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681313467] [2020-11-29 22:52:54,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:54,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:54,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420632061] [2020-11-29 22:52:54,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:54,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:54,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:54,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:54,722 INFO L87 Difference]: Start difference. First operand 147466 states and 172040 transitions. Second operand 4 states. [2020-11-29 22:52:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:55,272 INFO L93 Difference]: Finished difference Result 237578 states and 270344 transitions. [2020-11-29 22:52:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:52:55,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-11-29 22:52:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:55,511 INFO L225 Difference]: With dead ends: 237578 [2020-11-29 22:52:55,511 INFO L226 Difference]: Without dead ends: 237578 [2020-11-29 22:52:55,511 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 [2020-11-29 22:52:55,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237578 states. [2020-11-29 22:52:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237578 to 229386. [2020-11-29 22:52:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229386 states. [2020-11-29 22:52:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229386 states to 229386 states and 262152 transitions. [2020-11-29 22:52:59,252 INFO L78 Accepts]: Start accepts. Automaton has 229386 states and 262152 transitions. Word has length 37 [2020-11-29 22:52:59,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:59,252 INFO L481 AbstractCegarLoop]: Abstraction has 229386 states and 262152 transitions. [2020-11-29 22:52:59,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:52:59,252 INFO L276 IsEmpty]: Start isEmpty. Operand 229386 states and 262152 transitions. [2020-11-29 22:52:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 22:52:59,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:59,386 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] [2020-11-29 22:52:59,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-29 22:52:59,386 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 22:52:59,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:59,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1929064908, now seen corresponding path program 1 times [2020-11-29 22:52:59,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:59,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126215577] [2020-11-29 22:52:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 22:52:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:59,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126215577] [2020-11-29 22:52:59,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:59,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:52:59,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53608389] [2020-11-29 22:52:59,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:52:59,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:59,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:52:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:52:59,441 INFO L87 Difference]: Start difference. First operand 229386 states and 262152 transitions. Second operand 4 states. [2020-11-29 22:53:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:53:00,202 INFO L93 Difference]: Finished difference Result 286727 states and 315398 transitions. [2020-11-29 22:53:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:53:00,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-11-29 22:53:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:53:00,203 INFO L225 Difference]: With dead ends: 286727 [2020-11-29 22:53:00,203 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:53:00,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:53:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:53:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:53:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:53:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:53:00,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-11-29 22:53:00,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:53:00,204 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:53:00,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:53:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:53:00,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:53:00,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-29 22:53:00,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:53:00 BoogieIcfgContainer [2020-11-29 22:53:00,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:53:00,210 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:53:00,210 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:53:00,210 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:53:00,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:25" (3/4) ... [2020-11-29 22:53:00,214 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:53:00,220 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-29 22:53:00,220 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 22:53:00,220 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 22:53:00,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 22:53:00,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:53:00,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 22:53:00,229 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:53:00,278 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6b9461f0-2f96-4391-859e-581a36cdcebd/bin/uautomizer/witness.graphml [2020-11-29 22:53:00,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:53:00,280 INFO L168 Benchmark]: Toolchain (without parser) took 35725.62 ms. Allocated memory was 109.1 MB in the beginning and 14.4 GB in the end (delta: 14.3 GB). Free memory was 87.9 MB in the beginning and 11.3 GB in the end (delta: -11.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 16.1 GB. [2020-11-29 22:53:00,280 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:53:00,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.14 ms. Allocated memory is still 109.1 MB. Free memory was 87.9 MB in the beginning and 77.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:00,281 INFO L168 Benchmark]: Boogie Preprocessor took 41.99 ms. Allocated memory is still 109.1 MB. Free memory was 77.2 MB in the beginning and 75.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:00,282 INFO L168 Benchmark]: RCFGBuilder took 599.85 ms. Allocated memory is still 109.1 MB. Free memory was 75.4 MB in the beginning and 52.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:00,282 INFO L168 Benchmark]: TraceAbstraction took 34738.18 ms. Allocated memory was 109.1 MB in the beginning and 14.4 GB in the end (delta: 14.3 GB). Free memory was 51.7 MB in the beginning and 11.3 GB in the end (delta: -11.2 GB). Peak memory consumption was 3.0 GB. Max. memory is 16.1 GB. [2020-11-29 22:53:00,282 INFO L168 Benchmark]: Witness Printer took 68.65 ms. Allocated memory is still 14.4 GB. Free memory was 11.3 GB in the beginning and 11.3 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:00,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.14 ms. Allocated memory is still 109.1 MB. Free memory was 87.9 MB in the beginning and 77.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.99 ms. Allocated memory is still 109.1 MB. Free memory was 77.2 MB in the beginning and 75.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 599.85 ms. Allocated memory is still 109.1 MB. Free memory was 75.4 MB in the beginning and 52.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34738.18 ms. Allocated memory was 109.1 MB in the beginning and 14.4 GB in the end (delta: 14.3 GB). Free memory was 51.7 MB in the beginning and 11.3 GB in the end (delta: -11.2 GB). Peak memory consumption was 3.0 GB. Max. memory is 16.1 GB. * Witness Printer took 68.65 ms. Allocated memory is still 14.4 GB. Free memory was 11.3 GB in the beginning and 11.3 GB in the end (delta: 4.2 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: 34.6s, OverallIterations: 37, TraceHistogramMax: 1, AutomataDifference: 13.8s, 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, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s 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: 15.7s AutomataMinimizationTime, 37 MinimizatonAttempts, 32772 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s 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...