./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_10.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_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/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 6423b7e5fbcc52c08e52aff49c79db620dd407c4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:49:13,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:49:13,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:49:13,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:49:13,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:49:13,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:49:13,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:49:13,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:49:13,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:49:13,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:49:13,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:49:13,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:49:13,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:49:13,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:49:13,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:49:13,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:49:13,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:49:13,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:49:13,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:49:13,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:49:13,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:49:13,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:49:13,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:49:13,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:49:13,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:49:13,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:49:13,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:49:13,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:49:13,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:49:13,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:49:13,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:49:13,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:49:13,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:49:13,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:49:13,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:49:13,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:49:13,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:49:13,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:49:13,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:49:13,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:49:13,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:49:13,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 18:49:13,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:49:13,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:49:13,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:49:13,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:49:13,710 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:49:13,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:49:13,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:49:13,711 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:49:13,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:49:13,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:49:13,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:49:13,711 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 18:49:13,712 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 18:49:13,712 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 18:49:13,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:49:13,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 18:49:13,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:49:13,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:49:13,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:49:13,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:49:13,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:49:13,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:49:13,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:49:13,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:49:13,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:49:13,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:49:13,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:49:13,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:49:13,716 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_8af9b090-92e6-4707-861e-a9a826da6f34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6423b7e5fbcc52c08e52aff49c79db620dd407c4 [2020-11-29 18:49:14,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:49:14,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:49:14,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:49:14,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:49:14,062 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:49:14,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_10.c [2020-11-29 18:49:14,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/data/c0c8ea83f/90057a28965440ca860502d5eb62653c/FLAGed2a229e2 [2020-11-29 18:49:14,696 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:49:14,697 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/sv-benchmarks/c/locks/test_locks_10.c [2020-11-29 18:49:14,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/data/c0c8ea83f/90057a28965440ca860502d5eb62653c/FLAGed2a229e2 [2020-11-29 18:49:15,050 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/data/c0c8ea83f/90057a28965440ca860502d5eb62653c [2020-11-29 18:49:15,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:49:15,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 18:49:15,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:49:15,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:49:15,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:49:15,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f40c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15, skipping insertion in model container [2020-11-29 18:49:15,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:49:15,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:49:15,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:49:15,314 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:49:15,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:49:15,378 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:49:15,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15 WrapperNode [2020-11-29 18:49:15,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:49:15,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:49:15,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:49:15,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:49:15,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (1/1) ... [2020-11-29 18:49:15,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:49:15,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:49:15,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:49:15,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:49:15,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/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 18:49:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 18:49:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:49:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 18:49:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 18:49:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 18:49:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 18:49:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 18:49:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:49:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 18:49:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 18:49:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 18:49:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:49:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:49:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:49:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:49:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:49:16,015 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:49:16,017 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-29 18:49:16,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:49:16 BoogieIcfgContainer [2020-11-29 18:49:16,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:49:16,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:49:16,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:49:16,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:49:16,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:49:15" (1/3) ... [2020-11-29 18:49:16,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d76290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:49:16, skipping insertion in model container [2020-11-29 18:49:16,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:49:15" (2/3) ... [2020-11-29 18:49:16,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d76290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:49:16, skipping insertion in model container [2020-11-29 18:49:16,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:49:16" (3/3) ... [2020-11-29 18:49:16,032 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-11-29 18:49:16,043 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:49:16,048 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 18:49:16,059 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 18:49:16,087 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:49:16,087 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 18:49:16,088 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:49:16,088 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:49:16,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:49:16,088 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:49:16,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:49:16,088 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:49:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-11-29 18:49:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 18:49:16,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:16,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:16,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:16,125 INFO L82 PathProgramCache]: Analyzing trace with hash -853069560, now seen corresponding path program 1 times [2020-11-29 18:49:16,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:16,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64332318] [2020-11-29 18:49:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:16,468 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 18:49:16,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64332318] [2020-11-29 18:49:16,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:16,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:49:16,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004171653] [2020-11-29 18:49:16,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:49:16,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:16,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:49:16,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:49:16,498 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-11-29 18:49:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:16,559 INFO L93 Difference]: Finished difference Result 46 states and 75 transitions. [2020-11-29 18:49:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:49:16,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 18:49:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:16,585 INFO L225 Difference]: With dead ends: 46 [2020-11-29 18:49:16,585 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 18:49:16,587 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 18:49:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 18:49:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-29 18:49:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 18:49:16,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 70 transitions. [2020-11-29 18:49:16,639 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 70 transitions. Word has length 9 [2020-11-29 18:49:16,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:16,639 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 70 transitions. [2020-11-29 18:49:16,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:49:16,640 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 70 transitions. [2020-11-29 18:49:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 18:49:16,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:16,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:16,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:49:16,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:16,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1308951589, now seen corresponding path program 1 times [2020-11-29 18:49:16,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:16,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363971929] [2020-11-29 18:49:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:16,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:16,781 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 18:49:16,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363971929] [2020-11-29 18:49:16,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:16,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:16,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030680070] [2020-11-29 18:49:16,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:16,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:16,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:16,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:16,784 INFO L87 Difference]: Start difference. First operand 41 states and 70 transitions. Second operand 4 states. [2020-11-29 18:49:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:17,079 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-11-29 18:49:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:17,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 18:49:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:17,082 INFO L225 Difference]: With dead ends: 73 [2020-11-29 18:49:17,082 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 18:49:17,083 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 18:49:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 18:49:17,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2020-11-29 18:49:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 18:49:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-11-29 18:49:17,094 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 22 [2020-11-29 18:49:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:17,094 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-11-29 18:49:17,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-11-29 18:49:17,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 18:49:17,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:17,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:17,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:49:17,096 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:17,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:17,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1974898457, now seen corresponding path program 1 times [2020-11-29 18:49:17,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:17,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228685072] [2020-11-29 18:49:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:17,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:17,202 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 18:49:17,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228685072] [2020-11-29 18:49:17,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:17,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:17,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511861759] [2020-11-29 18:49:17,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:17,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:17,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:17,223 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 4 states. [2020-11-29 18:49:17,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:17,476 INFO L93 Difference]: Finished difference Result 73 states and 128 transitions. [2020-11-29 18:49:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:17,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-29 18:49:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:17,484 INFO L225 Difference]: With dead ends: 73 [2020-11-29 18:49:17,484 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 18:49:17,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:49:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 18:49:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-11-29 18:49:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 18:49:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 127 transitions. [2020-11-29 18:49:17,497 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 127 transitions. Word has length 22 [2020-11-29 18:49:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:17,498 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 127 transitions. [2020-11-29 18:49:17,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 127 transitions. [2020-11-29 18:49:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:49:17,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:17,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:17,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:49:17,502 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:17,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1916186131, now seen corresponding path program 1 times [2020-11-29 18:49:17,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:17,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632571199] [2020-11-29 18:49:17,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:17,607 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 18:49:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632571199] [2020-11-29 18:49:17,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:17,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:17,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462476393] [2020-11-29 18:49:17,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:17,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:17,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:17,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:17,610 INFO L87 Difference]: Start difference. First operand 72 states and 127 transitions. Second operand 4 states. [2020-11-29 18:49:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:17,949 INFO L93 Difference]: Finished difference Result 76 states and 130 transitions. [2020-11-29 18:49:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:17,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 18:49:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:17,952 INFO L225 Difference]: With dead ends: 76 [2020-11-29 18:49:17,952 INFO L226 Difference]: Without dead ends: 76 [2020-11-29 18:49:17,952 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 18:49:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-29 18:49:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-11-29 18:49:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 18:49:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 129 transitions. [2020-11-29 18:49:17,969 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 129 transitions. Word has length 23 [2020-11-29 18:49:17,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:17,969 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 129 transitions. [2020-11-29 18:49:17,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 129 transitions. [2020-11-29 18:49:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:49:17,972 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:17,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:17,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:49:17,972 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:17,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1098917487, now seen corresponding path program 1 times [2020-11-29 18:49:17,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:17,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249016535] [2020-11-29 18:49:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:18,077 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 18:49:18,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249016535] [2020-11-29 18:49:18,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:18,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:18,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440104896] [2020-11-29 18:49:18,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:18,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:18,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:18,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:18,089 INFO L87 Difference]: Start difference. First operand 75 states and 129 transitions. Second operand 4 states. [2020-11-29 18:49:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:18,308 INFO L93 Difference]: Finished difference Result 137 states and 239 transitions. [2020-11-29 18:49:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:18,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 18:49:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:18,311 INFO L225 Difference]: With dead ends: 137 [2020-11-29 18:49:18,311 INFO L226 Difference]: Without dead ends: 137 [2020-11-29 18:49:18,311 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 18:49:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-29 18:49:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-11-29 18:49:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 18:49:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 238 transitions. [2020-11-29 18:49:18,330 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 238 transitions. Word has length 23 [2020-11-29 18:49:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:18,330 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 238 transitions. [2020-11-29 18:49:18,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 238 transitions. [2020-11-29 18:49:18,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 18:49:18,337 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:18,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:18,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:49:18,340 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:18,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2110034737, now seen corresponding path program 1 times [2020-11-29 18:49:18,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:18,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968099893] [2020-11-29 18:49:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:18,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:18,414 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 18:49:18,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968099893] [2020-11-29 18:49:18,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:18,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:18,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509592366] [2020-11-29 18:49:18,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:18,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:18,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:18,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:18,416 INFO L87 Difference]: Start difference. First operand 136 states and 238 transitions. Second operand 4 states. [2020-11-29 18:49:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:18,636 INFO L93 Difference]: Finished difference Result 173 states and 305 transitions. [2020-11-29 18:49:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:18,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-29 18:49:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:18,640 INFO L225 Difference]: With dead ends: 173 [2020-11-29 18:49:18,640 INFO L226 Difference]: Without dead ends: 173 [2020-11-29 18:49:18,640 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 18:49:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-11-29 18:49:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 136. [2020-11-29 18:49:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 18:49:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 236 transitions. [2020-11-29 18:49:18,664 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 236 transitions. Word has length 23 [2020-11-29 18:49:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:18,664 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 236 transitions. [2020-11-29 18:49:18,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 236 transitions. [2020-11-29 18:49:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 18:49:18,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:18,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:18,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:49:18,669 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:18,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:18,669 INFO L82 PathProgramCache]: Analyzing trace with hash -286678236, now seen corresponding path program 1 times [2020-11-29 18:49:18,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:18,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435193453] [2020-11-29 18:49:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:18,768 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 18:49:18,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435193453] [2020-11-29 18:49:18,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:18,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:18,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196514098] [2020-11-29 18:49:18,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:18,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:18,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:18,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:18,777 INFO L87 Difference]: Start difference. First operand 136 states and 236 transitions. Second operand 4 states. [2020-11-29 18:49:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:18,991 INFO L93 Difference]: Finished difference Result 249 states and 439 transitions. [2020-11-29 18:49:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:18,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 18:49:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:18,993 INFO L225 Difference]: With dead ends: 249 [2020-11-29 18:49:18,993 INFO L226 Difference]: Without dead ends: 249 [2020-11-29 18:49:18,993 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 18:49:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-11-29 18:49:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 184. [2020-11-29 18:49:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-29 18:49:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 318 transitions. [2020-11-29 18:49:19,013 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 318 transitions. Word has length 24 [2020-11-29 18:49:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:19,014 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 318 transitions. [2020-11-29 18:49:19,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 318 transitions. [2020-11-29 18:49:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 18:49:19,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:19,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:19,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 18:49:19,018 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:19,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1297795486, now seen corresponding path program 1 times [2020-11-29 18:49:19,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:19,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186657495] [2020-11-29 18:49:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:19,097 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 18:49:19,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186657495] [2020-11-29 18:49:19,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:19,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:19,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038025646] [2020-11-29 18:49:19,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:19,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:19,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:19,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:19,099 INFO L87 Difference]: Start difference. First operand 184 states and 318 transitions. Second operand 4 states. [2020-11-29 18:49:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:19,271 INFO L93 Difference]: Finished difference Result 257 states and 441 transitions. [2020-11-29 18:49:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:19,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 18:49:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:19,273 INFO L225 Difference]: With dead ends: 257 [2020-11-29 18:49:19,273 INFO L226 Difference]: Without dead ends: 257 [2020-11-29 18:49:19,274 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 18:49:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-29 18:49:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2020-11-29 18:49:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-11-29 18:49:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 440 transitions. [2020-11-29 18:49:19,290 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 440 transitions. Word has length 24 [2020-11-29 18:49:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:19,290 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 440 transitions. [2020-11-29 18:49:19,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 440 transitions. [2020-11-29 18:49:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 18:49:19,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:19,292 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 18:49:19,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 18:49:19,293 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:19,293 INFO L82 PathProgramCache]: Analyzing trace with hash -290462118, now seen corresponding path program 1 times [2020-11-29 18:49:19,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:19,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071235553] [2020-11-29 18:49:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:19,370 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 18:49:19,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071235553] [2020-11-29 18:49:19,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:19,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:19,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511332753] [2020-11-29 18:49:19,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:19,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:19,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:19,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:19,372 INFO L87 Difference]: Start difference. First operand 256 states and 440 transitions. Second operand 4 states. [2020-11-29 18:49:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:19,546 INFO L93 Difference]: Finished difference Result 263 states and 445 transitions. [2020-11-29 18:49:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:19,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 18:49:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:19,549 INFO L225 Difference]: With dead ends: 263 [2020-11-29 18:49:19,549 INFO L226 Difference]: Without dead ends: 263 [2020-11-29 18:49:19,550 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 18:49:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-29 18:49:19,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2020-11-29 18:49:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-29 18:49:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 444 transitions. [2020-11-29 18:49:19,563 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 444 transitions. Word has length 25 [2020-11-29 18:49:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:19,564 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 444 transitions. [2020-11-29 18:49:19,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 444 transitions. [2020-11-29 18:49:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 18:49:19,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:19,565 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 18:49:19,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 18:49:19,566 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:19,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1570325796, now seen corresponding path program 1 times [2020-11-29 18:49:19,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:19,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724534220] [2020-11-29 18:49:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:19,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:19,625 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 18:49:19,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724534220] [2020-11-29 18:49:19,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:19,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:19,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518986709] [2020-11-29 18:49:19,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:19,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:19,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:19,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:19,626 INFO L87 Difference]: Start difference. First operand 262 states and 444 transitions. Second operand 4 states. [2020-11-29 18:49:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:19,788 INFO L93 Difference]: Finished difference Result 475 states and 813 transitions. [2020-11-29 18:49:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:19,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 18:49:19,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:19,792 INFO L225 Difference]: With dead ends: 475 [2020-11-29 18:49:19,792 INFO L226 Difference]: Without dead ends: 475 [2020-11-29 18:49:19,793 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 18:49:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-11-29 18:49:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 362. [2020-11-29 18:49:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-11-29 18:49:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 604 transitions. [2020-11-29 18:49:19,809 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 604 transitions. Word has length 25 [2020-11-29 18:49:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:19,810 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 604 transitions. [2020-11-29 18:49:19,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 604 transitions. [2020-11-29 18:49:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 18:49:19,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:19,812 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] [2020-11-29 18:49:19,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 18:49:19,813 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:19,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1713524250, now seen corresponding path program 1 times [2020-11-29 18:49:19,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:19,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219602346] [2020-11-29 18:49:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:19,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:19,930 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 18:49:19,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219602346] [2020-11-29 18:49:19,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:19,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:19,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825945349] [2020-11-29 18:49:19,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:19,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:19,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:19,934 INFO L87 Difference]: Start difference. First operand 362 states and 604 transitions. Second operand 4 states. [2020-11-29 18:49:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:20,107 INFO L93 Difference]: Finished difference Result 499 states and 825 transitions. [2020-11-29 18:49:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:20,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 18:49:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:20,111 INFO L225 Difference]: With dead ends: 499 [2020-11-29 18:49:20,111 INFO L226 Difference]: Without dead ends: 499 [2020-11-29 18:49:20,111 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 18:49:20,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-11-29 18:49:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 498. [2020-11-29 18:49:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-11-29 18:49:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 824 transitions. [2020-11-29 18:49:20,129 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 824 transitions. Word has length 25 [2020-11-29 18:49:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:20,130 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 824 transitions. [2020-11-29 18:49:20,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 824 transitions. [2020-11-29 18:49:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 18:49:20,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:20,134 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 18:49:20,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 18:49:20,135 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1428820243, now seen corresponding path program 1 times [2020-11-29 18:49:20,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:20,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694722748] [2020-11-29 18:49:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:20,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:20,225 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 18:49:20,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694722748] [2020-11-29 18:49:20,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:20,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:20,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131535951] [2020-11-29 18:49:20,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:20,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:20,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:20,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:20,227 INFO L87 Difference]: Start difference. First operand 498 states and 824 transitions. Second operand 4 states. [2020-11-29 18:49:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:20,424 INFO L93 Difference]: Finished difference Result 507 states and 825 transitions. [2020-11-29 18:49:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:20,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-29 18:49:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:20,428 INFO L225 Difference]: With dead ends: 507 [2020-11-29 18:49:20,428 INFO L226 Difference]: Without dead ends: 507 [2020-11-29 18:49:20,428 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 18:49:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-11-29 18:49:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 506. [2020-11-29 18:49:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-11-29 18:49:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 824 transitions. [2020-11-29 18:49:20,446 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 824 transitions. Word has length 26 [2020-11-29 18:49:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:20,446 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 824 transitions. [2020-11-29 18:49:20,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 824 transitions. [2020-11-29 18:49:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 18:49:20,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:20,448 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 18:49:20,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 18:49:20,449 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:20,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:20,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1586283375, now seen corresponding path program 1 times [2020-11-29 18:49:20,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:20,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987567998] [2020-11-29 18:49:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:20,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:20,570 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 18:49:20,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987567998] [2020-11-29 18:49:20,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:20,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:20,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655591919] [2020-11-29 18:49:20,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:20,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:20,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:20,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:20,572 INFO L87 Difference]: Start difference. First operand 506 states and 824 transitions. Second operand 4 states. [2020-11-29 18:49:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:20,750 INFO L93 Difference]: Finished difference Result 907 states and 1489 transitions. [2020-11-29 18:49:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:20,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-29 18:49:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:20,757 INFO L225 Difference]: With dead ends: 907 [2020-11-29 18:49:20,757 INFO L226 Difference]: Without dead ends: 907 [2020-11-29 18:49:20,757 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 18:49:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-11-29 18:49:20,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 714. [2020-11-29 18:49:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-11-29 18:49:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1136 transitions. [2020-11-29 18:49:20,782 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1136 transitions. Word has length 26 [2020-11-29 18:49:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:20,782 INFO L481 AbstractCegarLoop]: Abstraction has 714 states and 1136 transitions. [2020-11-29 18:49:20,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1136 transitions. [2020-11-29 18:49:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 18:49:20,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:20,784 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 18:49:20,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 18:49:20,785 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:20,785 INFO L82 PathProgramCache]: Analyzing trace with hash 575166125, now seen corresponding path program 1 times [2020-11-29 18:49:20,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:20,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898200186] [2020-11-29 18:49:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:20,867 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 18:49:20,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898200186] [2020-11-29 18:49:20,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:20,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:20,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129229651] [2020-11-29 18:49:20,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:20,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:20,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:20,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:20,869 INFO L87 Difference]: Start difference. First operand 714 states and 1136 transitions. Second operand 4 states. [2020-11-29 18:49:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:21,051 INFO L93 Difference]: Finished difference Result 971 states and 1529 transitions. [2020-11-29 18:49:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:21,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-29 18:49:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:21,057 INFO L225 Difference]: With dead ends: 971 [2020-11-29 18:49:21,057 INFO L226 Difference]: Without dead ends: 971 [2020-11-29 18:49:21,059 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 18:49:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-11-29 18:49:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 970. [2020-11-29 18:49:21,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-11-29 18:49:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1528 transitions. [2020-11-29 18:49:21,087 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1528 transitions. Word has length 26 [2020-11-29 18:49:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:21,088 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1528 transitions. [2020-11-29 18:49:21,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1528 transitions. [2020-11-29 18:49:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 18:49:21,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:21,091 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 18:49:21,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 18:49:21,091 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:21,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1936794117, now seen corresponding path program 1 times [2020-11-29 18:49:21,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:21,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128869318] [2020-11-29 18:49:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:21,191 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 18:49:21,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128869318] [2020-11-29 18:49:21,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:21,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:21,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916295978] [2020-11-29 18:49:21,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:21,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:21,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:21,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:21,193 INFO L87 Difference]: Start difference. First operand 970 states and 1528 transitions. Second operand 4 states. [2020-11-29 18:49:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:21,387 INFO L93 Difference]: Finished difference Result 987 states and 1529 transitions. [2020-11-29 18:49:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:21,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 18:49:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:21,393 INFO L225 Difference]: With dead ends: 987 [2020-11-29 18:49:21,393 INFO L226 Difference]: Without dead ends: 987 [2020-11-29 18:49:21,395 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 18:49:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-11-29 18:49:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 986. [2020-11-29 18:49:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-11-29 18:49:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1528 transitions. [2020-11-29 18:49:21,423 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1528 transitions. Word has length 27 [2020-11-29 18:49:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:21,424 INFO L481 AbstractCegarLoop]: Abstraction has 986 states and 1528 transitions. [2020-11-29 18:49:21,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1528 transitions. [2020-11-29 18:49:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 18:49:21,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:21,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:49:21,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 18:49:21,427 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash 656930439, now seen corresponding path program 1 times [2020-11-29 18:49:21,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:21,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163201163] [2020-11-29 18:49:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:21,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:21,508 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 18:49:21,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163201163] [2020-11-29 18:49:21,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:21,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:21,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994303217] [2020-11-29 18:49:21,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:21,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:21,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:21,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:21,513 INFO L87 Difference]: Start difference. First operand 986 states and 1528 transitions. Second operand 4 states. [2020-11-29 18:49:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:21,702 INFO L93 Difference]: Finished difference Result 1739 states and 2713 transitions. [2020-11-29 18:49:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:21,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 18:49:21,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:21,712 INFO L225 Difference]: With dead ends: 1739 [2020-11-29 18:49:21,712 INFO L226 Difference]: Without dead ends: 1739 [2020-11-29 18:49:21,713 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 18:49:21,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2020-11-29 18:49:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1418. [2020-11-29 18:49:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-11-29 18:49:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2136 transitions. [2020-11-29 18:49:21,755 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2136 transitions. Word has length 27 [2020-11-29 18:49:21,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:21,755 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 2136 transitions. [2020-11-29 18:49:21,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2136 transitions. [2020-11-29 18:49:21,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 18:49:21,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:21,759 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 18:49:21,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 18:49:21,759 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:21,760 INFO L82 PathProgramCache]: Analyzing trace with hash -354186811, now seen corresponding path program 1 times [2020-11-29 18:49:21,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:21,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123323588] [2020-11-29 18:49:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:21,875 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 18:49:21,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123323588] [2020-11-29 18:49:21,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:21,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:21,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919725453] [2020-11-29 18:49:21,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:21,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:21,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:21,876 INFO L87 Difference]: Start difference. First operand 1418 states and 2136 transitions. Second operand 4 states. [2020-11-29 18:49:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:22,052 INFO L93 Difference]: Finished difference Result 1899 states and 2825 transitions. [2020-11-29 18:49:22,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:22,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 18:49:22,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:22,062 INFO L225 Difference]: With dead ends: 1899 [2020-11-29 18:49:22,062 INFO L226 Difference]: Without dead ends: 1899 [2020-11-29 18:49:22,063 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 18:49:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-11-29 18:49:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1898. [2020-11-29 18:49:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-11-29 18:49:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2824 transitions. [2020-11-29 18:49:22,121 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2824 transitions. Word has length 27 [2020-11-29 18:49:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:22,121 INFO L481 AbstractCegarLoop]: Abstraction has 1898 states and 2824 transitions. [2020-11-29 18:49:22,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2824 transitions. [2020-11-29 18:49:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 18:49:22,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:22,124 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 18:49:22,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 18:49:22,124 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:22,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:22,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1103332552, now seen corresponding path program 1 times [2020-11-29 18:49:22,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:22,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411506877] [2020-11-29 18:49:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:22,190 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 18:49:22,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411506877] [2020-11-29 18:49:22,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:22,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:22,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279684557] [2020-11-29 18:49:22,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:22,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:22,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:22,199 INFO L87 Difference]: Start difference. First operand 1898 states and 2824 transitions. Second operand 4 states. [2020-11-29 18:49:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:22,372 INFO L93 Difference]: Finished difference Result 1931 states and 2825 transitions. [2020-11-29 18:49:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:22,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 18:49:22,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:22,383 INFO L225 Difference]: With dead ends: 1931 [2020-11-29 18:49:22,383 INFO L226 Difference]: Without dead ends: 1931 [2020-11-29 18:49:22,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:49:22,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2020-11-29 18:49:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1930. [2020-11-29 18:49:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-11-29 18:49:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2824 transitions. [2020-11-29 18:49:22,452 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2824 transitions. Word has length 28 [2020-11-29 18:49:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:22,453 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2824 transitions. [2020-11-29 18:49:22,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2824 transitions. [2020-11-29 18:49:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 18:49:22,455 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:22,455 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 18:49:22,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 18:49:22,456 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:22,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1911771066, now seen corresponding path program 1 times [2020-11-29 18:49:22,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:22,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443514241] [2020-11-29 18:49:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:22,522 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 18:49:22,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443514241] [2020-11-29 18:49:22,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:22,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:22,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936392989] [2020-11-29 18:49:22,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:22,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:22,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:22,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:22,523 INFO L87 Difference]: Start difference. First operand 1930 states and 2824 transitions. Second operand 4 states. [2020-11-29 18:49:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:22,718 INFO L93 Difference]: Finished difference Result 3339 states and 4905 transitions. [2020-11-29 18:49:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:22,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 18:49:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:22,737 INFO L225 Difference]: With dead ends: 3339 [2020-11-29 18:49:22,737 INFO L226 Difference]: Without dead ends: 3339 [2020-11-29 18:49:22,737 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 18:49:22,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2020-11-29 18:49:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2826. [2020-11-29 18:49:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-11-29 18:49:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4008 transitions. [2020-11-29 18:49:22,821 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4008 transitions. Word has length 28 [2020-11-29 18:49:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:22,821 INFO L481 AbstractCegarLoop]: Abstraction has 2826 states and 4008 transitions. [2020-11-29 18:49:22,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4008 transitions. [2020-11-29 18:49:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 18:49:22,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:22,826 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 18:49:22,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 18:49:22,826 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:22,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:22,827 INFO L82 PathProgramCache]: Analyzing trace with hash 900653816, now seen corresponding path program 1 times [2020-11-29 18:49:22,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:22,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828737604] [2020-11-29 18:49:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:22,883 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 18:49:22,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828737604] [2020-11-29 18:49:22,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:22,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:22,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819176858] [2020-11-29 18:49:22,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:22,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:22,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:22,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:22,885 INFO L87 Difference]: Start difference. First operand 2826 states and 4008 transitions. Second operand 4 states. [2020-11-29 18:49:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:23,082 INFO L93 Difference]: Finished difference Result 3723 states and 5193 transitions. [2020-11-29 18:49:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:23,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 18:49:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:23,106 INFO L225 Difference]: With dead ends: 3723 [2020-11-29 18:49:23,106 INFO L226 Difference]: Without dead ends: 3723 [2020-11-29 18:49:23,106 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 18:49:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2020-11-29 18:49:23,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3722. [2020-11-29 18:49:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-11-29 18:49:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5192 transitions. [2020-11-29 18:49:23,205 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5192 transitions. Word has length 28 [2020-11-29 18:49:23,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:23,206 INFO L481 AbstractCegarLoop]: Abstraction has 3722 states and 5192 transitions. [2020-11-29 18:49:23,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5192 transitions. [2020-11-29 18:49:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 18:49:23,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:23,211 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 18:49:23,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 18:49:23,212 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:23,213 INFO L82 PathProgramCache]: Analyzing trace with hash -857968208, now seen corresponding path program 1 times [2020-11-29 18:49:23,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:23,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309961790] [2020-11-29 18:49:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:23,262 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 18:49:23,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309961790] [2020-11-29 18:49:23,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:23,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:23,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849866309] [2020-11-29 18:49:23,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:23,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:23,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:23,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:23,264 INFO L87 Difference]: Start difference. First operand 3722 states and 5192 transitions. Second operand 4 states. [2020-11-29 18:49:23,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:23,426 INFO L93 Difference]: Finished difference Result 3787 states and 5193 transitions. [2020-11-29 18:49:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:23,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 18:49:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:23,446 INFO L225 Difference]: With dead ends: 3787 [2020-11-29 18:49:23,446 INFO L226 Difference]: Without dead ends: 3787 [2020-11-29 18:49:23,446 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 18:49:23,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2020-11-29 18:49:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3786. [2020-11-29 18:49:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3786 states. [2020-11-29 18:49:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3786 states to 3786 states and 5192 transitions. [2020-11-29 18:49:23,586 INFO L78 Accepts]: Start accepts. Automaton has 3786 states and 5192 transitions. Word has length 29 [2020-11-29 18:49:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:23,586 INFO L481 AbstractCegarLoop]: Abstraction has 3786 states and 5192 transitions. [2020-11-29 18:49:23,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3786 states and 5192 transitions. [2020-11-29 18:49:23,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 18:49:23,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:23,592 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 18:49:23,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 18:49:23,593 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:23,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:23,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2137831886, now seen corresponding path program 1 times [2020-11-29 18:49:23,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:23,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212850786] [2020-11-29 18:49:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:23,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:23,657 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 18:49:23,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212850786] [2020-11-29 18:49:23,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:23,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:23,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53192834] [2020-11-29 18:49:23,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:23,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:23,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:23,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:23,658 INFO L87 Difference]: Start difference. First operand 3786 states and 5192 transitions. Second operand 4 states. [2020-11-29 18:49:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:23,838 INFO L93 Difference]: Finished difference Result 6411 states and 8777 transitions. [2020-11-29 18:49:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:23,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 18:49:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:23,881 INFO L225 Difference]: With dead ends: 6411 [2020-11-29 18:49:23,881 INFO L226 Difference]: Without dead ends: 6411 [2020-11-29 18:49:23,882 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 18:49:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2020-11-29 18:49:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5642. [2020-11-29 18:49:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5642 states. [2020-11-29 18:49:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 7496 transitions. [2020-11-29 18:49:23,996 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 7496 transitions. Word has length 29 [2020-11-29 18:49:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:23,996 INFO L481 AbstractCegarLoop]: Abstraction has 5642 states and 7496 transitions. [2020-11-29 18:49:23,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:23,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 7496 transitions. [2020-11-29 18:49:24,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 18:49:24,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:24,048 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 18:49:24,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 18:49:24,049 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1146018160, now seen corresponding path program 1 times [2020-11-29 18:49:24,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:24,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441619596] [2020-11-29 18:49:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:24,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:24,105 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 18:49:24,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441619596] [2020-11-29 18:49:24,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:24,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:24,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621897948] [2020-11-29 18:49:24,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:24,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:24,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:24,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:24,106 INFO L87 Difference]: Start difference. First operand 5642 states and 7496 transitions. Second operand 4 states. [2020-11-29 18:49:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:24,285 INFO L93 Difference]: Finished difference Result 7307 states and 9481 transitions. [2020-11-29 18:49:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:24,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 18:49:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:24,299 INFO L225 Difference]: With dead ends: 7307 [2020-11-29 18:49:24,300 INFO L226 Difference]: Without dead ends: 7307 [2020-11-29 18:49:24,300 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 18:49:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7307 states. [2020-11-29 18:49:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7307 to 7306. [2020-11-29 18:49:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2020-11-29 18:49:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9480 transitions. [2020-11-29 18:49:24,441 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9480 transitions. Word has length 29 [2020-11-29 18:49:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:24,441 INFO L481 AbstractCegarLoop]: Abstraction has 7306 states and 9480 transitions. [2020-11-29 18:49:24,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9480 transitions. [2020-11-29 18:49:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 18:49:24,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:24,451 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 18:49:24,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 18:49:24,452 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:24,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1841597565, now seen corresponding path program 1 times [2020-11-29 18:49:24,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:24,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319805155] [2020-11-29 18:49:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:24,552 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 18:49:24,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319805155] [2020-11-29 18:49:24,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:24,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:24,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503761781] [2020-11-29 18:49:24,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:24,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:24,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:24,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:24,554 INFO L87 Difference]: Start difference. First operand 7306 states and 9480 transitions. Second operand 4 states. [2020-11-29 18:49:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:24,727 INFO L93 Difference]: Finished difference Result 7435 states and 9481 transitions. [2020-11-29 18:49:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:24,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 18:49:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:24,741 INFO L225 Difference]: With dead ends: 7435 [2020-11-29 18:49:24,742 INFO L226 Difference]: Without dead ends: 7435 [2020-11-29 18:49:24,742 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 18:49:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2020-11-29 18:49:24,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7434. [2020-11-29 18:49:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7434 states. [2020-11-29 18:49:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7434 states to 7434 states and 9480 transitions. [2020-11-29 18:49:24,867 INFO L78 Accepts]: Start accepts. Automaton has 7434 states and 9480 transitions. Word has length 30 [2020-11-29 18:49:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:24,867 INFO L481 AbstractCegarLoop]: Abstraction has 7434 states and 9480 transitions. [2020-11-29 18:49:24,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7434 states and 9480 transitions. [2020-11-29 18:49:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 18:49:24,907 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:24,908 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 18:49:24,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 18:49:24,908 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:24,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1173506053, now seen corresponding path program 1 times [2020-11-29 18:49:24,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:24,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100318922] [2020-11-29 18:49:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:24,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:24,965 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 18:49:24,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100318922] [2020-11-29 18:49:24,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:24,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:24,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675274020] [2020-11-29 18:49:24,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:24,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:24,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:24,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:24,967 INFO L87 Difference]: Start difference. First operand 7434 states and 9480 transitions. Second operand 4 states. [2020-11-29 18:49:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:25,150 INFO L93 Difference]: Finished difference Result 12299 states and 15497 transitions. [2020-11-29 18:49:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:25,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 18:49:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:25,172 INFO L225 Difference]: With dead ends: 12299 [2020-11-29 18:49:25,173 INFO L226 Difference]: Without dead ends: 12299 [2020-11-29 18:49:25,173 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 18:49:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12299 states. [2020-11-29 18:49:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12299 to 11274. [2020-11-29 18:49:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11274 states. [2020-11-29 18:49:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11274 states to 11274 states and 13960 transitions. [2020-11-29 18:49:25,400 INFO L78 Accepts]: Start accepts. Automaton has 11274 states and 13960 transitions. Word has length 30 [2020-11-29 18:49:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:25,400 INFO L481 AbstractCegarLoop]: Abstraction has 11274 states and 13960 transitions. [2020-11-29 18:49:25,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 11274 states and 13960 transitions. [2020-11-29 18:49:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 18:49:25,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:25,420 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 18:49:25,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 18:49:25,420 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:25,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:25,421 INFO L82 PathProgramCache]: Analyzing trace with hash 162388803, now seen corresponding path program 1 times [2020-11-29 18:49:25,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:25,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638077778] [2020-11-29 18:49:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:25,476 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 18:49:25,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638077778] [2020-11-29 18:49:25,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:25,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:25,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714273593] [2020-11-29 18:49:25,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:25,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:25,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:25,478 INFO L87 Difference]: Start difference. First operand 11274 states and 13960 transitions. Second operand 4 states. [2020-11-29 18:49:25,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:25,683 INFO L93 Difference]: Finished difference Result 14347 states and 17161 transitions. [2020-11-29 18:49:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:25,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 18:49:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:25,710 INFO L225 Difference]: With dead ends: 14347 [2020-11-29 18:49:25,710 INFO L226 Difference]: Without dead ends: 14347 [2020-11-29 18:49:25,710 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 18:49:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14347 states. [2020-11-29 18:49:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14347 to 14346. [2020-11-29 18:49:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14346 states. [2020-11-29 18:49:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14346 states to 14346 states and 17160 transitions. [2020-11-29 18:49:26,004 INFO L78 Accepts]: Start accepts. Automaton has 14346 states and 17160 transitions. Word has length 30 [2020-11-29 18:49:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:26,005 INFO L481 AbstractCegarLoop]: Abstraction has 14346 states and 17160 transitions. [2020-11-29 18:49:26,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 14346 states and 17160 transitions. [2020-11-29 18:49:26,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 18:49:26,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:26,024 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 18:49:26,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 18:49:26,025 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:26,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2025641307, now seen corresponding path program 1 times [2020-11-29 18:49:26,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:26,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502507290] [2020-11-29 18:49:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:26,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:26,158 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 18:49:26,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502507290] [2020-11-29 18:49:26,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:26,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:26,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088428321] [2020-11-29 18:49:26,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:26,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:26,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:26,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:26,161 INFO L87 Difference]: Start difference. First operand 14346 states and 17160 transitions. Second operand 4 states. [2020-11-29 18:49:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:26,350 INFO L93 Difference]: Finished difference Result 14603 states and 17161 transitions. [2020-11-29 18:49:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:26,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 18:49:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:26,375 INFO L225 Difference]: With dead ends: 14603 [2020-11-29 18:49:26,375 INFO L226 Difference]: Without dead ends: 14603 [2020-11-29 18:49:26,376 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 18:49:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14603 states. [2020-11-29 18:49:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14603 to 14602. [2020-11-29 18:49:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14602 states. [2020-11-29 18:49:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14602 states to 14602 states and 17160 transitions. [2020-11-29 18:49:26,598 INFO L78 Accepts]: Start accepts. Automaton has 14602 states and 17160 transitions. Word has length 31 [2020-11-29 18:49:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:26,598 INFO L481 AbstractCegarLoop]: Abstraction has 14602 states and 17160 transitions. [2020-11-29 18:49:26,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 14602 states and 17160 transitions. [2020-11-29 18:49:26,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 18:49:26,616 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:26,616 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 18:49:26,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 18:49:26,617 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash 745777629, now seen corresponding path program 1 times [2020-11-29 18:49:26,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:26,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807739534] [2020-11-29 18:49:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:26,717 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 18:49:26,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807739534] [2020-11-29 18:49:26,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:26,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:26,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865606506] [2020-11-29 18:49:26,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:26,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:26,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:26,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:26,719 INFO L87 Difference]: Start difference. First operand 14602 states and 17160 transitions. Second operand 4 states. [2020-11-29 18:49:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:26,962 INFO L93 Difference]: Finished difference Result 28170 states and 31240 transitions. [2020-11-29 18:49:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:26,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 18:49:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:26,991 INFO L225 Difference]: With dead ends: 28170 [2020-11-29 18:49:26,991 INFO L226 Difference]: Without dead ends: 14602 [2020-11-29 18:49:26,991 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 18:49:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14602 states. [2020-11-29 18:49:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14602 to 14602. [2020-11-29 18:49:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14602 states. [2020-11-29 18:49:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14602 states to 14602 states and 16136 transitions. [2020-11-29 18:49:27,261 INFO L78 Accepts]: Start accepts. Automaton has 14602 states and 16136 transitions. Word has length 31 [2020-11-29 18:49:27,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:27,261 INFO L481 AbstractCegarLoop]: Abstraction has 14602 states and 16136 transitions. [2020-11-29 18:49:27,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 14602 states and 16136 transitions. [2020-11-29 18:49:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 18:49:27,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:49:27,279 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 18:49:27,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 18:49:27,279 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:49:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:49:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1756894879, now seen corresponding path program 1 times [2020-11-29 18:49:27,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:49:27,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813836675] [2020-11-29 18:49:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:49:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:27,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 18:49:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:49:27,404 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 18:49:27,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813836675] [2020-11-29 18:49:27,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:49:27,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:49:27,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445515957] [2020-11-29 18:49:27,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:49:27,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:49:27,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:49:27,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:49:27,410 INFO L87 Difference]: Start difference. First operand 14602 states and 16136 transitions. Second operand 4 states. [2020-11-29 18:49:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:49:27,529 INFO L93 Difference]: Finished difference Result 14599 states and 15622 transitions. [2020-11-29 18:49:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:49:27,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 18:49:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:49:27,530 INFO L225 Difference]: With dead ends: 14599 [2020-11-29 18:49:27,530 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:49:27,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:49:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:49:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:49:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:49:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:49:27,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-11-29 18:49:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:49:27,533 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:49:27,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:49:27,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:49:27,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:49:27,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 18:49:27,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:49:27 BoogieIcfgContainer [2020-11-29 18:49:27,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:49:27,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:49:27,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:49:27,545 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:49:27,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:49:16" (3/4) ... [2020-11-29 18:49:27,548 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:49:27,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-29 18:49:27,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 18:49:27,555 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 18:49:27,563 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 18:49:27,564 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 18:49:27,564 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 18:49:27,565 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:49:27,631 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8af9b090-92e6-4707-861e-a9a826da6f34/bin/uautomizer/witness.graphml [2020-11-29 18:49:27,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:49:27,633 INFO L168 Benchmark]: Toolchain (without parser) took 12575.60 ms. Allocated memory was 94.4 MB in the beginning and 696.3 MB in the end (delta: 601.9 MB). Free memory was 66.6 MB in the beginning and 512.2 MB in the end (delta: -445.6 MB). Peak memory consumption was 155.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:49:27,634 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 44.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:49:27,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.06 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 71.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:49:27,635 INFO L168 Benchmark]: Boogie Preprocessor took 41.21 ms. Allocated memory is still 94.4 MB. Free memory was 71.1 MB in the beginning and 69.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:49:27,635 INFO L168 Benchmark]: RCFGBuilder took 597.58 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 48.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:49:27,636 INFO L168 Benchmark]: TraceAbstraction took 11521.86 ms. Allocated memory was 94.4 MB in the beginning and 696.3 MB in the end (delta: 601.9 MB). Free memory was 48.5 MB in the beginning and 516.4 MB in the end (delta: -467.9 MB). Peak memory consumption was 135.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:49:27,638 INFO L168 Benchmark]: Witness Printer took 86.82 ms. Allocated memory is still 696.3 MB. Free memory was 516.4 MB in the beginning and 512.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:49:27,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 44.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.06 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 71.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.21 ms. Allocated memory is still 94.4 MB. Free memory was 71.1 MB in the beginning and 69.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 597.58 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 48.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11521.86 ms. Allocated memory was 94.4 MB in the beginning and 696.3 MB in the end (delta: 601.9 MB). Free memory was 48.5 MB in the beginning and 516.4 MB in the end (delta: -467.9 MB). Peak memory consumption was 135.1 MB. Max. memory is 16.1 GB. * Witness Printer took 86.82 ms. Allocated memory is still 696.3 MB. Free memory was 516.4 MB in the beginning and 512.2 MB 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, 50 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.4s, OverallIterations: 29, TraceHistogramMax: 1, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2450 SDtfs, 3578 SDslu, 216 SDs, 0 SdLazy, 1705 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14602occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 29 MinimizatonAttempts, 3074 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 758 NumberOfCodeBlocks, 758 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 729 ConstructedInterpolants, 0 QuantifiedInterpolants, 57759 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 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...