./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_9.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_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_9.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/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 20a70402cc893fb2c7adec21ca8a267adc3c5cbb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:39,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:39,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:39,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:39,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:39,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:39,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:39,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:39,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:39,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:39,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:39,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:39,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:39,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:39,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:39,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:39,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:39,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:39,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:39,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:39,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:39,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:39,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:39,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:39,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:39,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:39,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:39,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:39,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:39,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:39,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:39,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:39,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:39,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:39,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:39,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:39,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:39,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:39,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:39,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:39,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:39,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:56:39,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:39,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:39,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:39,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:39,875 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:39,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:39,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:39,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:39,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:39,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:39,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:39,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:56:39,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:56:39,877 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:56:39,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:39,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:56:39,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:39,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:39,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:39,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:39,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:39,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:39,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:39,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:39,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:39,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:39,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:39,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:39,879 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_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20a70402cc893fb2c7adec21ca8a267adc3c5cbb [2020-11-28 02:56:40,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:40,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:40,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:40,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:40,200 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:40,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_9.c [2020-11-28 02:56:40,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/data/f73a2f50a/859979c8b4a241a88273f866b57b2f92/FLAG5b2baf285 [2020-11-28 02:56:40,746 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:40,747 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/sv-benchmarks/c/locks/test_locks_9.c [2020-11-28 02:56:40,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/data/f73a2f50a/859979c8b4a241a88273f866b57b2f92/FLAG5b2baf285 [2020-11-28 02:56:41,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/data/f73a2f50a/859979c8b4a241a88273f866b57b2f92 [2020-11-28 02:56:41,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:41,159 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:56:41,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:41,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:41,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:41,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe194d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41, skipping insertion in model container [2020-11-28 02:56:41,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:41,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:41,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:41,441 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:41,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:41,478 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:41,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41 WrapperNode [2020-11-28 02:56:41,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:41,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:41,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:41,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:41,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (1/1) ... [2020-11-28 02:56:41,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:41,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:41,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:41,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:41,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:41,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:56:41,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:41,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 02:56:41,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:56:41,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:56:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 02:56:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 02:56:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:56:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:56:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:56:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:42,234 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:42,236 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-28 02:56:42,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:42 BoogieIcfgContainer [2020-11-28 02:56:42,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:42,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:42,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:42,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:42,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:41" (1/3) ... [2020-11-28 02:56:42,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3143f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:42, skipping insertion in model container [2020-11-28 02:56:42,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:41" (2/3) ... [2020-11-28 02:56:42,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3143f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:42, skipping insertion in model container [2020-11-28 02:56:42,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:42" (3/3) ... [2020-11-28 02:56:42,249 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-11-28 02:56:42,260 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:42,265 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:56:42,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 02:56:42,308 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:42,308 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:56:42,308 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:42,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:42,309 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:42,309 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:42,309 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:42,309 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-11-28 02:56:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:56:42,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:42,339 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,347 INFO L82 PathProgramCache]: Analyzing trace with hash -693527066, now seen corresponding path program 1 times [2020-11-28 02:56:42,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814035523] [2020-11-28 02:56:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:42,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814035523] [2020-11-28 02:56:42,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:42,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:42,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456052482] [2020-11-28 02:56:42,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:42,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:42,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:42,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:42,681 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2020-11-28 02:56:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:42,723 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2020-11-28 02:56:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:42,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:56:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:42,734 INFO L225 Difference]: With dead ends: 43 [2020-11-28 02:56:42,735 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 02:56:42,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 02:56:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-28 02:56:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 02:56:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2020-11-28 02:56:42,774 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 9 [2020-11-28 02:56:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:42,774 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2020-11-28 02:56:42,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2020-11-28 02:56:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:56:42,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:42,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:42,776 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:42,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,777 INFO L82 PathProgramCache]: Analyzing trace with hash 838313058, now seen corresponding path program 1 times [2020-11-28 02:56:42,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123267518] [2020-11-28 02:56:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:42,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123267518] [2020-11-28 02:56:42,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:42,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:42,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020314318] [2020-11-28 02:56:42,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:42,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:42,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:42,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:42,920 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand 4 states. [2020-11-28 02:56:43,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:43,222 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-11-28 02:56:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:43,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 02:56:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:43,225 INFO L225 Difference]: With dead ends: 67 [2020-11-28 02:56:43,225 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 02:56:43,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 02:56:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2020-11-28 02:56:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 02:56:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-11-28 02:56:43,235 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 21 [2020-11-28 02:56:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:43,236 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-11-28 02:56:43,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-11-28 02:56:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:56:43,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:43,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:43,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:43,238 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash 251507044, now seen corresponding path program 1 times [2020-11-28 02:56:43,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:43,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131510624] [2020-11-28 02:56:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:43,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131510624] [2020-11-28 02:56:43,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:43,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:43,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362457947] [2020-11-28 02:56:43,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:43,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:43,371 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-11-28 02:56:43,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:43,583 INFO L93 Difference]: Finished difference Result 67 states and 116 transitions. [2020-11-28 02:56:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:43,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 02:56:43,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:43,585 INFO L225 Difference]: With dead ends: 67 [2020-11-28 02:56:43,585 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 02:56:43,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 02:56:43,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-11-28 02:56:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 02:56:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 115 transitions. [2020-11-28 02:56:43,594 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 115 transitions. Word has length 21 [2020-11-28 02:56:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:43,595 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 115 transitions. [2020-11-28 02:56:43,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 115 transitions. [2020-11-28 02:56:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:43,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:43,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:43,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:43,597 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:43,597 INFO L82 PathProgramCache]: Analyzing trace with hash 224518530, now seen corresponding path program 1 times [2020-11-28 02:56:43,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:43,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985393152] [2020-11-28 02:56:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:43,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985393152] [2020-11-28 02:56:43,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:43,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:43,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282926981] [2020-11-28 02:56:43,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:43,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:43,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:43,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:43,719 INFO L87 Difference]: Start difference. First operand 66 states and 115 transitions. Second operand 4 states. [2020-11-28 02:56:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:43,878 INFO L93 Difference]: Finished difference Result 70 states and 118 transitions. [2020-11-28 02:56:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:43,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 02:56:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:43,880 INFO L225 Difference]: With dead ends: 70 [2020-11-28 02:56:43,880 INFO L226 Difference]: Without dead ends: 70 [2020-11-28 02:56:43,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:43,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-28 02:56:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-11-28 02:56:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 02:56:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 117 transitions. [2020-11-28 02:56:43,887 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 117 transitions. Word has length 22 [2020-11-28 02:56:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:43,888 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 117 transitions. [2020-11-28 02:56:43,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 117 transitions. [2020-11-28 02:56:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:43,889 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:43,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:43,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:56:43,889 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:43,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash -786598720, now seen corresponding path program 1 times [2020-11-28 02:56:43,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:43,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464934492] [2020-11-28 02:56:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:44,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464934492] [2020-11-28 02:56:44,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:44,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:44,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304654988] [2020-11-28 02:56:44,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:44,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:44,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:44,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:44,004 INFO L87 Difference]: Start difference. First operand 69 states and 117 transitions. Second operand 4 states. [2020-11-28 02:56:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:44,184 INFO L93 Difference]: Finished difference Result 125 states and 215 transitions. [2020-11-28 02:56:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:44,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 02:56:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:44,186 INFO L225 Difference]: With dead ends: 125 [2020-11-28 02:56:44,186 INFO L226 Difference]: Without dead ends: 125 [2020-11-28 02:56:44,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-28 02:56:44,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-11-28 02:56:44,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-28 02:56:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 214 transitions. [2020-11-28 02:56:44,197 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 214 transitions. Word has length 22 [2020-11-28 02:56:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:44,198 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 214 transitions. [2020-11-28 02:56:44,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 214 transitions. [2020-11-28 02:56:44,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:44,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:44,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:44,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:56:44,200 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:44,201 INFO L82 PathProgramCache]: Analyzing trace with hash -199792706, now seen corresponding path program 1 times [2020-11-28 02:56:44,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:44,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112041572] [2020-11-28 02:56:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:44,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112041572] [2020-11-28 02:56:44,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:44,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:44,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631223556] [2020-11-28 02:56:44,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:44,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:44,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:44,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:44,281 INFO L87 Difference]: Start difference. First operand 124 states and 214 transitions. Second operand 4 states. [2020-11-28 02:56:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:44,441 INFO L93 Difference]: Finished difference Result 157 states and 273 transitions. [2020-11-28 02:56:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:44,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 02:56:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:44,443 INFO L225 Difference]: With dead ends: 157 [2020-11-28 02:56:44,443 INFO L226 Difference]: Without dead ends: 157 [2020-11-28 02:56:44,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-28 02:56:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-11-28 02:56:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-28 02:56:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 212 transitions. [2020-11-28 02:56:44,456 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 212 transitions. Word has length 22 [2020-11-28 02:56:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:44,457 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 212 transitions. [2020-11-28 02:56:44,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 212 transitions. [2020-11-28 02:56:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:56:44,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:44,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:44,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:56:44,459 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:44,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1391871535, now seen corresponding path program 1 times [2020-11-28 02:56:44,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:44,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570088167] [2020-11-28 02:56:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:44,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:44,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570088167] [2020-11-28 02:56:44,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:44,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:44,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393411732] [2020-11-28 02:56:44,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:44,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:44,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:44,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:44,550 INFO L87 Difference]: Start difference. First operand 124 states and 212 transitions. Second operand 4 states. [2020-11-28 02:56:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:44,703 INFO L93 Difference]: Finished difference Result 225 states and 391 transitions. [2020-11-28 02:56:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:44,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-28 02:56:44,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:44,706 INFO L225 Difference]: With dead ends: 225 [2020-11-28 02:56:44,706 INFO L226 Difference]: Without dead ends: 225 [2020-11-28 02:56:44,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-11-28 02:56:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 168. [2020-11-28 02:56:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-28 02:56:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 286 transitions. [2020-11-28 02:56:44,717 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 286 transitions. Word has length 23 [2020-11-28 02:56:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:44,718 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 286 transitions. [2020-11-28 02:56:44,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 286 transitions. [2020-11-28 02:56:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:56:44,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:44,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:44,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:56:44,720 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:44,720 INFO L82 PathProgramCache]: Analyzing trace with hash 805065521, now seen corresponding path program 1 times [2020-11-28 02:56:44,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:44,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51651686] [2020-11-28 02:56:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:44,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51651686] [2020-11-28 02:56:44,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:44,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:44,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67347885] [2020-11-28 02:56:44,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:44,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:44,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:44,801 INFO L87 Difference]: Start difference. First operand 168 states and 286 transitions. Second operand 4 states. [2020-11-28 02:56:44,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:44,997 INFO L93 Difference]: Finished difference Result 233 states and 393 transitions. [2020-11-28 02:56:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:44,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-28 02:56:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:45,000 INFO L225 Difference]: With dead ends: 233 [2020-11-28 02:56:45,000 INFO L226 Difference]: Without dead ends: 233 [2020-11-28 02:56:45,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-11-28 02:56:45,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2020-11-28 02:56:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-28 02:56:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 392 transitions. [2020-11-28 02:56:45,011 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 392 transitions. Word has length 23 [2020-11-28 02:56:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:45,011 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 392 transitions. [2020-11-28 02:56:45,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 392 transitions. [2020-11-28 02:56:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:56:45,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:45,013 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] [2020-11-28 02:56:45,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:56:45,014 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:45,014 INFO L82 PathProgramCache]: Analyzing trace with hash 204983275, now seen corresponding path program 1 times [2020-11-28 02:56:45,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:45,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969180133] [2020-11-28 02:56:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:45,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969180133] [2020-11-28 02:56:45,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:45,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:45,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958978259] [2020-11-28 02:56:45,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:45,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:45,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:45,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:45,081 INFO L87 Difference]: Start difference. First operand 232 states and 392 transitions. Second operand 4 states. [2020-11-28 02:56:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:45,252 INFO L93 Difference]: Finished difference Result 239 states and 397 transitions. [2020-11-28 02:56:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:45,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 02:56:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:45,255 INFO L225 Difference]: With dead ends: 239 [2020-11-28 02:56:45,255 INFO L226 Difference]: Without dead ends: 239 [2020-11-28 02:56:45,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-11-28 02:56:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2020-11-28 02:56:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-11-28 02:56:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 396 transitions. [2020-11-28 02:56:45,265 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 396 transitions. Word has length 24 [2020-11-28 02:56:45,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:45,267 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 396 transitions. [2020-11-28 02:56:45,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 396 transitions. [2020-11-28 02:56:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:56:45,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:45,274 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] [2020-11-28 02:56:45,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:56:45,274 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash -806133975, now seen corresponding path program 1 times [2020-11-28 02:56:45,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:45,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825398708] [2020-11-28 02:56:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:45,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825398708] [2020-11-28 02:56:45,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:45,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:45,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413486036] [2020-11-28 02:56:45,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:45,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:45,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:45,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:45,348 INFO L87 Difference]: Start difference. First operand 238 states and 396 transitions. Second operand 4 states. [2020-11-28 02:56:45,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:45,533 INFO L93 Difference]: Finished difference Result 427 states and 717 transitions. [2020-11-28 02:56:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:45,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 02:56:45,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:45,537 INFO L225 Difference]: With dead ends: 427 [2020-11-28 02:56:45,537 INFO L226 Difference]: Without dead ends: 427 [2020-11-28 02:56:45,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:45,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-11-28 02:56:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 330. [2020-11-28 02:56:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-11-28 02:56:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 540 transitions. [2020-11-28 02:56:45,561 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 540 transitions. Word has length 24 [2020-11-28 02:56:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:45,563 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 540 transitions. [2020-11-28 02:56:45,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 540 transitions. [2020-11-28 02:56:45,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:56:45,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:45,568 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] [2020-11-28 02:56:45,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:56:45,569 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:45,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1392939989, now seen corresponding path program 1 times [2020-11-28 02:56:45,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:45,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198054039] [2020-11-28 02:56:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:45,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198054039] [2020-11-28 02:56:45,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:45,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:45,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117409647] [2020-11-28 02:56:45,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:45,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:45,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:45,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:45,644 INFO L87 Difference]: Start difference. First operand 330 states and 540 transitions. Second operand 4 states. [2020-11-28 02:56:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:45,825 INFO L93 Difference]: Finished difference Result 451 states and 729 transitions. [2020-11-28 02:56:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:45,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 02:56:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:45,829 INFO L225 Difference]: With dead ends: 451 [2020-11-28 02:56:45,830 INFO L226 Difference]: Without dead ends: 451 [2020-11-28 02:56:45,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-11-28 02:56:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 450. [2020-11-28 02:56:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-11-28 02:56:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 728 transitions. [2020-11-28 02:56:45,857 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 728 transitions. Word has length 24 [2020-11-28 02:56:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:45,858 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 728 transitions. [2020-11-28 02:56:45,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 728 transitions. [2020-11-28 02:56:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:56:45,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:45,859 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] [2020-11-28 02:56:45,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 02:56:45,860 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:45,860 INFO L82 PathProgramCache]: Analyzing trace with hash 786299772, now seen corresponding path program 1 times [2020-11-28 02:56:45,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:45,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809187683] [2020-11-28 02:56:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:45,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809187683] [2020-11-28 02:56:45,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:45,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:45,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457053284] [2020-11-28 02:56:45,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:45,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:45,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:45,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:45,917 INFO L87 Difference]: Start difference. First operand 450 states and 728 transitions. Second operand 4 states. [2020-11-28 02:56:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:46,077 INFO L93 Difference]: Finished difference Result 459 states and 729 transitions. [2020-11-28 02:56:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:46,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-28 02:56:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:46,080 INFO L225 Difference]: With dead ends: 459 [2020-11-28 02:56:46,081 INFO L226 Difference]: Without dead ends: 459 [2020-11-28 02:56:46,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-11-28 02:56:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 458. [2020-11-28 02:56:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-11-28 02:56:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 728 transitions. [2020-11-28 02:56:46,101 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 728 transitions. Word has length 25 [2020-11-28 02:56:46,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:46,101 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 728 transitions. [2020-11-28 02:56:46,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 728 transitions. [2020-11-28 02:56:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:56:46,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:46,110 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] [2020-11-28 02:56:46,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 02:56:46,111 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:46,111 INFO L82 PathProgramCache]: Analyzing trace with hash -224817478, now seen corresponding path program 1 times [2020-11-28 02:56:46,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:46,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396280772] [2020-11-28 02:56:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:46,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396280772] [2020-11-28 02:56:46,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:46,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:46,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661035441] [2020-11-28 02:56:46,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:46,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:46,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:46,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:46,183 INFO L87 Difference]: Start difference. First operand 458 states and 728 transitions. Second operand 4 states. [2020-11-28 02:56:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:46,357 INFO L93 Difference]: Finished difference Result 811 states and 1297 transitions. [2020-11-28 02:56:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:46,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-28 02:56:46,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:46,363 INFO L225 Difference]: With dead ends: 811 [2020-11-28 02:56:46,364 INFO L226 Difference]: Without dead ends: 811 [2020-11-28 02:56:46,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-11-28 02:56:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 650. [2020-11-28 02:56:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-11-28 02:56:46,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1008 transitions. [2020-11-28 02:56:46,387 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1008 transitions. Word has length 25 [2020-11-28 02:56:46,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:46,387 INFO L481 AbstractCegarLoop]: Abstraction has 650 states and 1008 transitions. [2020-11-28 02:56:46,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1008 transitions. [2020-11-28 02:56:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:56:46,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:46,389 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] [2020-11-28 02:56:46,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 02:56:46,389 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:46,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:46,390 INFO L82 PathProgramCache]: Analyzing trace with hash -811623492, now seen corresponding path program 1 times [2020-11-28 02:56:46,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:46,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725692509] [2020-11-28 02:56:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:46,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725692509] [2020-11-28 02:56:46,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:46,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:46,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236167711] [2020-11-28 02:56:46,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:46,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:46,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:46,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:46,463 INFO L87 Difference]: Start difference. First operand 650 states and 1008 transitions. Second operand 4 states. [2020-11-28 02:56:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:46,654 INFO L93 Difference]: Finished difference Result 875 states and 1337 transitions. [2020-11-28 02:56:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:46,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-28 02:56:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:46,660 INFO L225 Difference]: With dead ends: 875 [2020-11-28 02:56:46,660 INFO L226 Difference]: Without dead ends: 875 [2020-11-28 02:56:46,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:46,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2020-11-28 02:56:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 874. [2020-11-28 02:56:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2020-11-28 02:56:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1336 transitions. [2020-11-28 02:56:46,687 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1336 transitions. Word has length 25 [2020-11-28 02:56:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:46,687 INFO L481 AbstractCegarLoop]: Abstraction has 874 states and 1336 transitions. [2020-11-28 02:56:46,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1336 transitions. [2020-11-28 02:56:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 02:56:46,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:46,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:46,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 02:56:46,690 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:46,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:46,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1627252566, now seen corresponding path program 1 times [2020-11-28 02:56:46,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:46,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456800857] [2020-11-28 02:56:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:46,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456800857] [2020-11-28 02:56:46,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:46,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:46,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121939279] [2020-11-28 02:56:46,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:46,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:46,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:46,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:46,754 INFO L87 Difference]: Start difference. First operand 874 states and 1336 transitions. Second operand 4 states. [2020-11-28 02:56:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:46,919 INFO L93 Difference]: Finished difference Result 891 states and 1337 transitions. [2020-11-28 02:56:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:46,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-28 02:56:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:46,925 INFO L225 Difference]: With dead ends: 891 [2020-11-28 02:56:46,925 INFO L226 Difference]: Without dead ends: 891 [2020-11-28 02:56:46,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:46,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-11-28 02:56:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 890. [2020-11-28 02:56:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-11-28 02:56:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1336 transitions. [2020-11-28 02:56:46,951 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1336 transitions. Word has length 26 [2020-11-28 02:56:46,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:46,951 INFO L481 AbstractCegarLoop]: Abstraction has 890 states and 1336 transitions. [2020-11-28 02:56:46,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1336 transitions. [2020-11-28 02:56:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 02:56:46,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:46,953 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] [2020-11-28 02:56:46,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 02:56:46,953 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash 616135316, now seen corresponding path program 1 times [2020-11-28 02:56:46,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:46,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177483550] [2020-11-28 02:56:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:47,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177483550] [2020-11-28 02:56:47,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:47,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:47,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229405566] [2020-11-28 02:56:47,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:47,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:47,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:47,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:47,027 INFO L87 Difference]: Start difference. First operand 890 states and 1336 transitions. Second operand 4 states. [2020-11-28 02:56:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:47,194 INFO L93 Difference]: Finished difference Result 1547 states and 2329 transitions. [2020-11-28 02:56:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:47,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-28 02:56:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:47,203 INFO L225 Difference]: With dead ends: 1547 [2020-11-28 02:56:47,204 INFO L226 Difference]: Without dead ends: 1547 [2020-11-28 02:56:47,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-11-28 02:56:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1290. [2020-11-28 02:56:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1290 states. [2020-11-28 02:56:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1880 transitions. [2020-11-28 02:56:47,242 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1880 transitions. Word has length 26 [2020-11-28 02:56:47,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:47,243 INFO L481 AbstractCegarLoop]: Abstraction has 1290 states and 1880 transitions. [2020-11-28 02:56:47,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1880 transitions. [2020-11-28 02:56:47,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 02:56:47,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:47,247 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] [2020-11-28 02:56:47,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 02:56:47,247 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:47,248 INFO L82 PathProgramCache]: Analyzing trace with hash 29329302, now seen corresponding path program 1 times [2020-11-28 02:56:47,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:47,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418052791] [2020-11-28 02:56:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:47,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418052791] [2020-11-28 02:56:47,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:47,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:47,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269692183] [2020-11-28 02:56:47,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:47,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:47,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:47,307 INFO L87 Difference]: Start difference. First operand 1290 states and 1880 transitions. Second operand 4 states. [2020-11-28 02:56:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:47,470 INFO L93 Difference]: Finished difference Result 1707 states and 2441 transitions. [2020-11-28 02:56:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:47,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-28 02:56:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:47,480 INFO L225 Difference]: With dead ends: 1707 [2020-11-28 02:56:47,480 INFO L226 Difference]: Without dead ends: 1707 [2020-11-28 02:56:47,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-11-28 02:56:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1706. [2020-11-28 02:56:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-11-28 02:56:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2440 transitions. [2020-11-28 02:56:47,551 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2440 transitions. Word has length 26 [2020-11-28 02:56:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:47,551 INFO L481 AbstractCegarLoop]: Abstraction has 1706 states and 2440 transitions. [2020-11-28 02:56:47,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2440 transitions. [2020-11-28 02:56:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:56:47,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:47,555 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] [2020-11-28 02:56:47,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 02:56:47,555 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:47,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1926995975, now seen corresponding path program 1 times [2020-11-28 02:56:47,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:47,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612745893] [2020-11-28 02:56:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:47,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612745893] [2020-11-28 02:56:47,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:47,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:47,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572920703] [2020-11-28 02:56:47,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:47,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:47,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:47,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:47,624 INFO L87 Difference]: Start difference. First operand 1706 states and 2440 transitions. Second operand 4 states. [2020-11-28 02:56:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:47,795 INFO L93 Difference]: Finished difference Result 1739 states and 2441 transitions. [2020-11-28 02:56:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:47,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-28 02:56:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:47,805 INFO L225 Difference]: With dead ends: 1739 [2020-11-28 02:56:47,805 INFO L226 Difference]: Without dead ends: 1739 [2020-11-28 02:56:47,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2020-11-28 02:56:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1738. [2020-11-28 02:56:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-11-28 02:56:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2440 transitions. [2020-11-28 02:56:47,853 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2440 transitions. Word has length 27 [2020-11-28 02:56:47,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:47,854 INFO L481 AbstractCegarLoop]: Abstraction has 1738 states and 2440 transitions. [2020-11-28 02:56:47,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2440 transitions. [2020-11-28 02:56:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:56:47,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:47,856 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] [2020-11-28 02:56:47,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 02:56:47,857 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:47,857 INFO L82 PathProgramCache]: Analyzing trace with hash 915878725, now seen corresponding path program 1 times [2020-11-28 02:56:47,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:47,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363196445] [2020-11-28 02:56:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:47,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363196445] [2020-11-28 02:56:47,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:47,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:47,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689426874] [2020-11-28 02:56:47,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:47,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:47,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:47,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:47,931 INFO L87 Difference]: Start difference. First operand 1738 states and 2440 transitions. Second operand 4 states. [2020-11-28 02:56:48,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:48,084 INFO L93 Difference]: Finished difference Result 2955 states and 4137 transitions. [2020-11-28 02:56:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:48,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-28 02:56:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:48,100 INFO L225 Difference]: With dead ends: 2955 [2020-11-28 02:56:48,101 INFO L226 Difference]: Without dead ends: 2955 [2020-11-28 02:56:48,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-11-28 02:56:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2570. [2020-11-28 02:56:48,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2570 states. [2020-11-28 02:56:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3496 transitions. [2020-11-28 02:56:48,197 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3496 transitions. Word has length 27 [2020-11-28 02:56:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:48,198 INFO L481 AbstractCegarLoop]: Abstraction has 2570 states and 3496 transitions. [2020-11-28 02:56:48,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3496 transitions. [2020-11-28 02:56:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:56:48,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:48,202 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] [2020-11-28 02:56:48,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 02:56:48,203 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash 329072711, now seen corresponding path program 1 times [2020-11-28 02:56:48,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:48,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487928056] [2020-11-28 02:56:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:48,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487928056] [2020-11-28 02:56:48,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:48,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:48,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149326761] [2020-11-28 02:56:48,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:48,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:48,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:48,257 INFO L87 Difference]: Start difference. First operand 2570 states and 3496 transitions. Second operand 4 states. [2020-11-28 02:56:48,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:48,413 INFO L93 Difference]: Finished difference Result 3339 states and 4425 transitions. [2020-11-28 02:56:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:48,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-28 02:56:48,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:48,430 INFO L225 Difference]: With dead ends: 3339 [2020-11-28 02:56:48,430 INFO L226 Difference]: Without dead ends: 3339 [2020-11-28 02:56:48,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:48,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2020-11-28 02:56:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3338. [2020-11-28 02:56:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3338 states. [2020-11-28 02:56:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4424 transitions. [2020-11-28 02:56:48,517 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4424 transitions. Word has length 27 [2020-11-28 02:56:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:48,517 INFO L481 AbstractCegarLoop]: Abstraction has 3338 states and 4424 transitions. [2020-11-28 02:56:48,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4424 transitions. [2020-11-28 02:56:48,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 02:56:48,522 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:48,522 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] [2020-11-28 02:56:48,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 02:56:48,523 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:48,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:48,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1665849663, now seen corresponding path program 1 times [2020-11-28 02:56:48,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:48,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643211899] [2020-11-28 02:56:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:48,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643211899] [2020-11-28 02:56:48,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:48,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:48,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192611100] [2020-11-28 02:56:48,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:48,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:48,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:48,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:48,595 INFO L87 Difference]: Start difference. First operand 3338 states and 4424 transitions. Second operand 4 states. [2020-11-28 02:56:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:48,746 INFO L93 Difference]: Finished difference Result 3403 states and 4425 transitions. [2020-11-28 02:56:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:48,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-28 02:56:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:48,763 INFO L225 Difference]: With dead ends: 3403 [2020-11-28 02:56:48,763 INFO L226 Difference]: Without dead ends: 3403 [2020-11-28 02:56:48,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-11-28 02:56:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3402. [2020-11-28 02:56:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3402 states. [2020-11-28 02:56:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 4424 transitions. [2020-11-28 02:56:48,837 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 4424 transitions. Word has length 28 [2020-11-28 02:56:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:48,837 INFO L481 AbstractCegarLoop]: Abstraction has 3402 states and 4424 transitions. [2020-11-28 02:56:48,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 4424 transitions. [2020-11-28 02:56:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 02:56:48,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:48,842 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] [2020-11-28 02:56:48,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 02:56:48,842 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:48,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:48,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1618000383, now seen corresponding path program 1 times [2020-11-28 02:56:48,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:48,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350323309] [2020-11-28 02:56:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:48,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:48,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350323309] [2020-11-28 02:56:48,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:48,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:48,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848010129] [2020-11-28 02:56:48,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:48,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:48,892 INFO L87 Difference]: Start difference. First operand 3402 states and 4424 transitions. Second operand 4 states. [2020-11-28 02:56:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:49,054 INFO L93 Difference]: Finished difference Result 5643 states and 7241 transitions. [2020-11-28 02:56:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:49,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-28 02:56:49,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:49,082 INFO L225 Difference]: With dead ends: 5643 [2020-11-28 02:56:49,083 INFO L226 Difference]: Without dead ends: 5643 [2020-11-28 02:56:49,083 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 [2020-11-28 02:56:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5643 states. [2020-11-28 02:56:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5643 to 5130. [2020-11-28 02:56:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5130 states. [2020-11-28 02:56:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 6472 transitions. [2020-11-28 02:56:49,182 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 6472 transitions. Word has length 28 [2020-11-28 02:56:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:49,182 INFO L481 AbstractCegarLoop]: Abstraction has 5130 states and 6472 transitions. [2020-11-28 02:56:49,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 6472 transitions. [2020-11-28 02:56:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 02:56:49,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:49,189 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] [2020-11-28 02:56:49,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 02:56:49,190 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:49,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1031194369, now seen corresponding path program 1 times [2020-11-28 02:56:49,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:49,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069661510] [2020-11-28 02:56:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:49,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069661510] [2020-11-28 02:56:49,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:49,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:49,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41069596] [2020-11-28 02:56:49,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:49,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:49,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:49,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:49,240 INFO L87 Difference]: Start difference. First operand 5130 states and 6472 transitions. Second operand 4 states. [2020-11-28 02:56:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:49,428 INFO L93 Difference]: Finished difference Result 6539 states and 7945 transitions. [2020-11-28 02:56:49,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:49,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-28 02:56:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:49,441 INFO L225 Difference]: With dead ends: 6539 [2020-11-28 02:56:49,441 INFO L226 Difference]: Without dead ends: 6539 [2020-11-28 02:56:49,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2020-11-28 02:56:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6538. [2020-11-28 02:56:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2020-11-28 02:56:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 7944 transitions. [2020-11-28 02:56:49,570 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 7944 transitions. Word has length 28 [2020-11-28 02:56:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:49,571 INFO L481 AbstractCegarLoop]: Abstraction has 6538 states and 7944 transitions. [2020-11-28 02:56:49,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 7944 transitions. [2020-11-28 02:56:49,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:56:49,580 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:49,580 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] [2020-11-28 02:56:49,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-28 02:56:49,580 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:49,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:49,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1374904174, now seen corresponding path program 1 times [2020-11-28 02:56:49,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:49,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985433346] [2020-11-28 02:56:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:49,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985433346] [2020-11-28 02:56:49,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:49,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:49,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5729244] [2020-11-28 02:56:49,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:49,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:49,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:49,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:49,636 INFO L87 Difference]: Start difference. First operand 6538 states and 7944 transitions. Second operand 4 states. [2020-11-28 02:56:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:49,786 INFO L93 Difference]: Finished difference Result 6667 states and 7945 transitions. [2020-11-28 02:56:49,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:49,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-28 02:56:49,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:49,799 INFO L225 Difference]: With dead ends: 6667 [2020-11-28 02:56:49,799 INFO L226 Difference]: Without dead ends: 6667 [2020-11-28 02:56:49,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2020-11-28 02:56:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6666. [2020-11-28 02:56:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6666 states. [2020-11-28 02:56:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 7944 transitions. [2020-11-28 02:56:49,933 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 7944 transitions. Word has length 29 [2020-11-28 02:56:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:49,933 INFO L481 AbstractCegarLoop]: Abstraction has 6666 states and 7944 transitions. [2020-11-28 02:56:49,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 7944 transitions. [2020-11-28 02:56:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:56:49,942 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:49,942 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] [2020-11-28 02:56:49,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-28 02:56:49,942 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:49,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1908945872, now seen corresponding path program 1 times [2020-11-28 02:56:49,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:49,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863821255] [2020-11-28 02:56:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:49,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863821255] [2020-11-28 02:56:49,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:49,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:49,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458919431] [2020-11-28 02:56:49,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:49,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:49,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:49,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:49,997 INFO L87 Difference]: Start difference. First operand 6666 states and 7944 transitions. Second operand 4 states. [2020-11-28 02:56:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:50,173 INFO L93 Difference]: Finished difference Result 10762 states and 12424 transitions. [2020-11-28 02:56:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:50,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-28 02:56:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:50,193 INFO L225 Difference]: With dead ends: 10762 [2020-11-28 02:56:50,194 INFO L226 Difference]: Without dead ends: 10762 [2020-11-28 02:56:50,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:50,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2020-11-28 02:56:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 10250. [2020-11-28 02:56:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10250 states. [2020-11-28 02:56:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10250 states to 10250 states and 11912 transitions. [2020-11-28 02:56:50,378 INFO L78 Accepts]: Start accepts. Automaton has 10250 states and 11912 transitions. Word has length 29 [2020-11-28 02:56:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:50,378 INFO L481 AbstractCegarLoop]: Abstraction has 10250 states and 11912 transitions. [2020-11-28 02:56:50,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 10250 states and 11912 transitions. [2020-11-28 02:56:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:56:50,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:50,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:50,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-28 02:56:50,395 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 02:56:50,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:50,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1322139858, now seen corresponding path program 1 times [2020-11-28 02:56:50,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:50,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904464619] [2020-11-28 02:56:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:56:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:50,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904464619] [2020-11-28 02:56:50,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:50,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:50,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833896405] [2020-11-28 02:56:50,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:50,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:50,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:50,449 INFO L87 Difference]: Start difference. First operand 10250 states and 11912 transitions. Second operand 4 states. [2020-11-28 02:56:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:50,613 INFO L93 Difference]: Finished difference Result 12807 states and 14086 transitions. [2020-11-28 02:56:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:50,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-28 02:56:50,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:50,614 INFO L225 Difference]: With dead ends: 12807 [2020-11-28 02:56:50,614 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:50,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:50,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:50,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-11-28 02:56:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:50,615 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:50,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:50,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:50,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-28 02:56:50,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:50 BoogieIcfgContainer [2020-11-28 02:56:50,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:50,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:50,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:50,622 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:50,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:42" (3/4) ... [2020-11-28 02:56:50,626 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:50,632 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-28 02:56:50,632 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 02:56:50,632 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 02:56:50,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 02:56:50,641 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:56:50,641 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 02:56:50,642 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:50,696 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c97f006d-85ae-45f9-9fd0-a884eaaf53f8/bin/uautomizer/witness.graphml [2020-11-28 02:56:50,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:50,698 INFO L168 Benchmark]: Toolchain (without parser) took 9537.57 ms. Allocated memory was 88.1 MB in the beginning and 211.8 MB in the end (delta: 123.7 MB). Free memory was 55.1 MB in the beginning and 79.2 MB in the end (delta: -24.1 MB). Peak memory consumption was 99.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:50,698 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 44.3 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:50,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.14 ms. Allocated memory is still 88.1 MB. Free memory was 54.9 MB in the beginning and 65.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:50,699 INFO L168 Benchmark]: Boogie Preprocessor took 40.02 ms. Allocated memory is still 88.1 MB. Free memory was 65.6 MB in the beginning and 63.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:50,699 INFO L168 Benchmark]: RCFGBuilder took 718.46 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 44.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:50,700 INFO L168 Benchmark]: TraceAbstraction took 8378.72 ms. Allocated memory was 88.1 MB in the beginning and 211.8 MB in the end (delta: 123.7 MB). Free memory was 43.7 MB in the beginning and 83.4 MB in the end (delta: -39.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:50,700 INFO L168 Benchmark]: Witness Printer took 74.52 ms. Allocated memory is still 211.8 MB. Free memory was 83.4 MB in the beginning and 79.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:50,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 44.3 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.14 ms. Allocated memory is still 88.1 MB. Free memory was 54.9 MB in the beginning and 65.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.02 ms. Allocated memory is still 88.1 MB. Free memory was 65.6 MB in the beginning and 63.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 718.46 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 44.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8378.72 ms. Allocated memory was 88.1 MB in the beginning and 211.8 MB in the end (delta: 123.7 MB). Free memory was 43.7 MB in the beginning and 83.4 MB in the end (delta: -39.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 16.1 GB. * Witness Printer took 74.52 ms. Allocated memory is still 211.8 MB. Free memory was 83.4 MB in the beginning and 79.2 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, 47 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.3s, OverallIterations: 26, TraceHistogramMax: 1, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2026 SDtfs, 2884 SDslu, 193 SDs, 0 SdLazy, 1413 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10250occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 2049 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 640 NumberOfCodeBlocks, 640 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 46238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 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...