./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_13.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:23:34,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:23:34,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:23:34,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:23:34,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:23:34,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:23:34,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:23:34,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:23:34,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:23:34,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:23:34,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:23:34,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:23:34,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:23:34,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:23:34,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:23:34,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:23:34,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:23:34,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:23:34,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:23:34,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:23:34,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:23:34,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:23:34,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:23:34,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:23:34,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:23:34,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:23:34,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:23:34,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:23:34,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:23:34,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:23:34,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:23:34,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:23:34,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:23:34,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:23:34,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:23:34,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:23:34,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:23:34,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:23:34,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:23:34,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:23:34,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:23:34,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:23:34,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:23:34,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:23:34,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:23:34,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:23:34,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:23:34,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:23:34,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:23:34,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:23:34,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:23:34,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:23:34,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:23:34,130 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:23:34,130 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:23:34,130 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:23:34,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:23:34,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:23:34,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:23:34,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:23:34,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:23:34,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:23:34,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:23:34,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:23:34,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:34,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:23:34,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:23:34,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:23:34,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:23:34,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:23:34,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 [2020-10-19 18:23:34,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:23:34,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:23:34,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:23:34,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:23:34,507 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:23:34,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_13.c [2020-10-19 18:23:34,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03703a409/8830e6a875014fd3b81a62a4b3cff895/FLAG3d9444ed1 [2020-10-19 18:23:35,068 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:23:35,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c [2020-10-19 18:23:35,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03703a409/8830e6a875014fd3b81a62a4b3cff895/FLAG3d9444ed1 [2020-10-19 18:23:35,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03703a409/8830e6a875014fd3b81a62a4b3cff895 [2020-10-19 18:23:35,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:23:35,428 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:23:35,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:35,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:23:35,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:23:35,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543d0b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35, skipping insertion in model container [2020-10-19 18:23:35,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:23:35,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:23:35,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:35,721 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:23:35,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:35,834 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:23:35,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35 WrapperNode [2020-10-19 18:23:35,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:35,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:23:35,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:23:35,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:23:35,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (1/1) ... [2020-10-19 18:23:35,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:23:35,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:23:35,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:23:35,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:23:35,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:23:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:23:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:23:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:23:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:23:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:23:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:23:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:23:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:23:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:23:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:23:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:23:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:23:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:23:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:23:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:23:36,408 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:23:36,408 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 18:23:36,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:36 BoogieIcfgContainer [2020-10-19 18:23:36,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:23:36,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:23:36,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:23:36,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:23:36,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:23:35" (1/3) ... [2020-10-19 18:23:36,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23782912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:36, skipping insertion in model container [2020-10-19 18:23:36,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:35" (2/3) ... [2020-10-19 18:23:36,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23782912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:36, skipping insertion in model container [2020-10-19 18:23:36,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:36" (3/3) ... [2020-10-19 18:23:36,428 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2020-10-19 18:23:36,445 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:23:36,452 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:23:36,463 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:23:36,483 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:23:36,483 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:23:36,483 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:23:36,483 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:23:36,484 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:23:36,484 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:23:36,484 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:23:36,484 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:23:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-19 18:23:36,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:23:36,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:36,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:36,512 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:36,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1331697042, now seen corresponding path program 1 times [2020-10-19 18:23:36,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:36,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811716674] [2020-10-19 18:23:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:36,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811716674] [2020-10-19 18:23:36,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:36,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:23:36,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260931909] [2020-10-19 18:23:36,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:23:36,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:36,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:23:36,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:36,824 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-10-19 18:23:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:36,884 INFO L93 Difference]: Finished difference Result 55 states and 93 transitions. [2020-10-19 18:23:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:23:36,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-19 18:23:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:36,901 INFO L225 Difference]: With dead ends: 55 [2020-10-19 18:23:36,901 INFO L226 Difference]: Without dead ends: 50 [2020-10-19 18:23:36,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-19 18:23:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-19 18:23:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-19 18:23:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 88 transitions. [2020-10-19 18:23:36,961 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 88 transitions. Word has length 9 [2020-10-19 18:23:36,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:36,961 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 88 transitions. [2020-10-19 18:23:36,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:23:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 88 transitions. [2020-10-19 18:23:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:23:36,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:36,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:36,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:23:36,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1784430188, now seen corresponding path program 1 times [2020-10-19 18:23:36,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:36,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957598751] [2020-10-19 18:23:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:37,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957598751] [2020-10-19 18:23:37,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:37,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:37,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212347479] [2020-10-19 18:23:37,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:37,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:37,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:37,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:37,137 INFO L87 Difference]: Start difference. First operand 50 states and 88 transitions. Second operand 4 states. [2020-10-19 18:23:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:37,395 INFO L93 Difference]: Finished difference Result 91 states and 166 transitions. [2020-10-19 18:23:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:37,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-19 18:23:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:37,399 INFO L225 Difference]: With dead ends: 91 [2020-10-19 18:23:37,399 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:23:37,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:23:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2020-10-19 18:23:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-19 18:23:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 115 transitions. [2020-10-19 18:23:37,414 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 115 transitions. Word has length 25 [2020-10-19 18:23:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:37,414 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 115 transitions. [2020-10-19 18:23:37,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 115 transitions. [2020-10-19 18:23:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:23:37,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:37,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:37,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:23:37,417 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash 196082286, now seen corresponding path program 1 times [2020-10-19 18:23:37,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:37,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323514774] [2020-10-19 18:23:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:37,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323514774] [2020-10-19 18:23:37,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:37,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:37,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736828373] [2020-10-19 18:23:37,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:37,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:37,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:37,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:37,516 INFO L87 Difference]: Start difference. First operand 64 states and 115 transitions. Second operand 4 states. [2020-10-19 18:23:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:37,739 INFO L93 Difference]: Finished difference Result 91 states and 164 transitions. [2020-10-19 18:23:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:37,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-19 18:23:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:37,742 INFO L225 Difference]: With dead ends: 91 [2020-10-19 18:23:37,742 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:23:37,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:23:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-19 18:23:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-19 18:23:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 163 transitions. [2020-10-19 18:23:37,755 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 163 transitions. Word has length 25 [2020-10-19 18:23:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:37,755 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 163 transitions. [2020-10-19 18:23:37,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 163 transitions. [2020-10-19 18:23:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:23:37,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:37,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:37,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:23:37,758 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:37,758 INFO L82 PathProgramCache]: Analyzing trace with hash -510661688, now seen corresponding path program 1 times [2020-10-19 18:23:37,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:37,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578058021] [2020-10-19 18:23:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:37,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578058021] [2020-10-19 18:23:37,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:37,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:37,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536085699] [2020-10-19 18:23:37,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:37,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:37,846 INFO L87 Difference]: Start difference. First operand 90 states and 163 transitions. Second operand 4 states. [2020-10-19 18:23:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:38,040 INFO L93 Difference]: Finished difference Result 94 states and 166 transitions. [2020-10-19 18:23:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:38,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-19 18:23:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:38,042 INFO L225 Difference]: With dead ends: 94 [2020-10-19 18:23:38,042 INFO L226 Difference]: Without dead ends: 94 [2020-10-19 18:23:38,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-19 18:23:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-19 18:23:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-19 18:23:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2020-10-19 18:23:38,052 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 26 [2020-10-19 18:23:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:38,053 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2020-10-19 18:23:38,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2020-10-19 18:23:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:23:38,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:38,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:38,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:23:38,055 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:38,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1790160902, now seen corresponding path program 1 times [2020-10-19 18:23:38,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:38,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807576773] [2020-10-19 18:23:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:38,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807576773] [2020-10-19 18:23:38,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:38,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:38,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878969375] [2020-10-19 18:23:38,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:38,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:38,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:38,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:38,136 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand 4 states. [2020-10-19 18:23:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:38,348 INFO L93 Difference]: Finished difference Result 173 states and 311 transitions. [2020-10-19 18:23:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:38,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-19 18:23:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:38,352 INFO L225 Difference]: With dead ends: 173 [2020-10-19 18:23:38,352 INFO L226 Difference]: Without dead ends: 173 [2020-10-19 18:23:38,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-19 18:23:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-10-19 18:23:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-19 18:23:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 310 transitions. [2020-10-19 18:23:38,366 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 310 transitions. Word has length 26 [2020-10-19 18:23:38,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:38,367 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 310 transitions. [2020-10-19 18:23:38,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 310 transitions. [2020-10-19 18:23:38,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:23:38,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:38,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:38,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:23:38,371 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:38,371 INFO L82 PathProgramCache]: Analyzing trace with hash -916458492, now seen corresponding path program 1 times [2020-10-19 18:23:38,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:38,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116821277] [2020-10-19 18:23:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:38,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116821277] [2020-10-19 18:23:38,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:38,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:38,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8789366] [2020-10-19 18:23:38,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:38,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:38,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:38,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:38,441 INFO L87 Difference]: Start difference. First operand 172 states and 310 transitions. Second operand 4 states. [2020-10-19 18:23:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:38,629 INFO L93 Difference]: Finished difference Result 221 states and 401 transitions. [2020-10-19 18:23:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:38,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-19 18:23:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:38,632 INFO L225 Difference]: With dead ends: 221 [2020-10-19 18:23:38,632 INFO L226 Difference]: Without dead ends: 221 [2020-10-19 18:23:38,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:38,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-19 18:23:38,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 172. [2020-10-19 18:23:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-19 18:23:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 308 transitions. [2020-10-19 18:23:38,643 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 308 transitions. Word has length 26 [2020-10-19 18:23:38,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:38,644 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 308 transitions. [2020-10-19 18:23:38,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:38,644 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 308 transitions. [2020-10-19 18:23:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:38,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:38,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:38,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:23:38,647 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:38,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:38,647 INFO L82 PathProgramCache]: Analyzing trace with hash -332998983, now seen corresponding path program 1 times [2020-10-19 18:23:38,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:38,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299510999] [2020-10-19 18:23:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:38,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299510999] [2020-10-19 18:23:38,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:38,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:38,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025580293] [2020-10-19 18:23:38,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:38,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:38,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:38,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:38,709 INFO L87 Difference]: Start difference. First operand 172 states and 308 transitions. Second operand 4 states. [2020-10-19 18:23:38,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:38,902 INFO L93 Difference]: Finished difference Result 321 states and 583 transitions. [2020-10-19 18:23:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:38,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:38,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:38,907 INFO L225 Difference]: With dead ends: 321 [2020-10-19 18:23:38,907 INFO L226 Difference]: Without dead ends: 321 [2020-10-19 18:23:38,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-19 18:23:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 232. [2020-10-19 18:23:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 18:23:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 414 transitions. [2020-10-19 18:23:38,935 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 414 transitions. Word has length 27 [2020-10-19 18:23:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:38,936 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 414 transitions. [2020-10-19 18:23:38,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 414 transitions. [2020-10-19 18:23:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:38,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:38,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:38,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:23:38,943 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1921346885, now seen corresponding path program 1 times [2020-10-19 18:23:38,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:38,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833906846] [2020-10-19 18:23:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:39,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833906846] [2020-10-19 18:23:39,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:39,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:39,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821768271] [2020-10-19 18:23:39,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:39,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:39,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:39,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:39,057 INFO L87 Difference]: Start difference. First operand 232 states and 414 transitions. Second operand 4 states. [2020-10-19 18:23:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:39,257 INFO L93 Difference]: Finished difference Result 329 states and 585 transitions. [2020-10-19 18:23:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:39,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:39,262 INFO L225 Difference]: With dead ends: 329 [2020-10-19 18:23:39,262 INFO L226 Difference]: Without dead ends: 329 [2020-10-19 18:23:39,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-19 18:23:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2020-10-19 18:23:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-19 18:23:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 584 transitions. [2020-10-19 18:23:39,273 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 584 transitions. Word has length 27 [2020-10-19 18:23:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:39,273 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 584 transitions. [2020-10-19 18:23:39,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 584 transitions. [2020-10-19 18:23:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:39,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:39,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:39,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:23:39,281 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:39,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1726435407, now seen corresponding path program 1 times [2020-10-19 18:23:39,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:39,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446708115] [2020-10-19 18:23:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:39,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446708115] [2020-10-19 18:23:39,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:39,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:39,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84859783] [2020-10-19 18:23:39,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:39,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:39,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:39,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:39,359 INFO L87 Difference]: Start difference. First operand 328 states and 584 transitions. Second operand 4 states. [2020-10-19 18:23:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:39,533 INFO L93 Difference]: Finished difference Result 335 states and 589 transitions. [2020-10-19 18:23:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:39,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-19 18:23:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:39,535 INFO L225 Difference]: With dead ends: 335 [2020-10-19 18:23:39,536 INFO L226 Difference]: Without dead ends: 335 [2020-10-19 18:23:39,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-19 18:23:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334. [2020-10-19 18:23:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-19 18:23:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 588 transitions. [2020-10-19 18:23:39,545 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 588 transitions. Word has length 28 [2020-10-19 18:23:39,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:39,545 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 588 transitions. [2020-10-19 18:23:39,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:39,545 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 588 transitions. [2020-10-19 18:23:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:39,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:39,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:39,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:23:39,547 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:39,548 INFO L82 PathProgramCache]: Analyzing trace with hash 574387183, now seen corresponding path program 1 times [2020-10-19 18:23:39,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:39,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443986860] [2020-10-19 18:23:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:39,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443986860] [2020-10-19 18:23:39,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:39,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:39,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69834806] [2020-10-19 18:23:39,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:39,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:39,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:39,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:39,599 INFO L87 Difference]: Start difference. First operand 334 states and 588 transitions. Second operand 4 states. [2020-10-19 18:23:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:39,772 INFO L93 Difference]: Finished difference Result 619 states and 1101 transitions. [2020-10-19 18:23:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:39,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-19 18:23:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:39,777 INFO L225 Difference]: With dead ends: 619 [2020-10-19 18:23:39,777 INFO L226 Difference]: Without dead ends: 619 [2020-10-19 18:23:39,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-10-19 18:23:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 458. [2020-10-19 18:23:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-19 18:23:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 796 transitions. [2020-10-19 18:23:39,790 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 796 transitions. Word has length 28 [2020-10-19 18:23:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:39,790 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 796 transitions. [2020-10-19 18:23:39,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 796 transitions. [2020-10-19 18:23:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:39,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:39,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:39,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:23:39,793 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:39,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:39,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1013960719, now seen corresponding path program 1 times [2020-10-19 18:23:39,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:39,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809921444] [2020-10-19 18:23:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:39,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809921444] [2020-10-19 18:23:39,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:39,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:39,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610400043] [2020-10-19 18:23:39,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:39,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:39,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:39,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:39,845 INFO L87 Difference]: Start difference. First operand 458 states and 796 transitions. Second operand 4 states. [2020-10-19 18:23:40,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:40,016 INFO L93 Difference]: Finished difference Result 643 states and 1113 transitions. [2020-10-19 18:23:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:40,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-19 18:23:40,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:40,021 INFO L225 Difference]: With dead ends: 643 [2020-10-19 18:23:40,022 INFO L226 Difference]: Without dead ends: 643 [2020-10-19 18:23:40,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-19 18:23:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 642. [2020-10-19 18:23:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-19 18:23:40,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1112 transitions. [2020-10-19 18:23:40,038 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1112 transitions. Word has length 28 [2020-10-19 18:23:40,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:40,039 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 1112 transitions. [2020-10-19 18:23:40,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1112 transitions. [2020-10-19 18:23:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:40,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:40,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:40,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:23:40,041 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:40,042 INFO L82 PathProgramCache]: Analyzing trace with hash 632742534, now seen corresponding path program 1 times [2020-10-19 18:23:40,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:40,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865936189] [2020-10-19 18:23:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865936189] [2020-10-19 18:23:40,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:40,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:40,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741683610] [2020-10-19 18:23:40,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:40,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:40,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:40,104 INFO L87 Difference]: Start difference. First operand 642 states and 1112 transitions. Second operand 4 states. [2020-10-19 18:23:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:40,265 INFO L93 Difference]: Finished difference Result 651 states and 1113 transitions. [2020-10-19 18:23:40,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:40,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:40,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:40,269 INFO L225 Difference]: With dead ends: 651 [2020-10-19 18:23:40,269 INFO L226 Difference]: Without dead ends: 651 [2020-10-19 18:23:40,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-10-19 18:23:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 650. [2020-10-19 18:23:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-10-19 18:23:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1112 transitions. [2020-10-19 18:23:40,285 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1112 transitions. Word has length 29 [2020-10-19 18:23:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:40,285 INFO L481 AbstractCegarLoop]: Abstraction has 650 states and 1112 transitions. [2020-10-19 18:23:40,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1112 transitions. [2020-10-19 18:23:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:40,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:40,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:40,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:23:40,287 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:40,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:40,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1361402172, now seen corresponding path program 1 times [2020-10-19 18:23:40,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:40,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406316862] [2020-10-19 18:23:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:40,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406316862] [2020-10-19 18:23:40,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:40,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:40,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827177071] [2020-10-19 18:23:40,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:40,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:40,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:40,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:40,352 INFO L87 Difference]: Start difference. First operand 650 states and 1112 transitions. Second operand 4 states. [2020-10-19 18:23:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:40,524 INFO L93 Difference]: Finished difference Result 1195 states and 2065 transitions. [2020-10-19 18:23:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:40,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:40,531 INFO L225 Difference]: With dead ends: 1195 [2020-10-19 18:23:40,531 INFO L226 Difference]: Without dead ends: 1195 [2020-10-19 18:23:40,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-19 18:23:40,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 906. [2020-10-19 18:23:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-10-19 18:23:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1520 transitions. [2020-10-19 18:23:40,563 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1520 transitions. Word has length 29 [2020-10-19 18:23:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:40,565 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1520 transitions. [2020-10-19 18:23:40,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1520 transitions. [2020-10-19 18:23:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:40,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:40,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:40,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:23:40,567 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:40,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:40,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1345217222, now seen corresponding path program 1 times [2020-10-19 18:23:40,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:40,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500708495] [2020-10-19 18:23:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:40,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500708495] [2020-10-19 18:23:40,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:40,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:40,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174715273] [2020-10-19 18:23:40,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:40,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:40,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:40,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:40,639 INFO L87 Difference]: Start difference. First operand 906 states and 1520 transitions. Second operand 4 states. [2020-10-19 18:23:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:40,796 INFO L93 Difference]: Finished difference Result 1259 states and 2105 transitions. [2020-10-19 18:23:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:40,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:40,803 INFO L225 Difference]: With dead ends: 1259 [2020-10-19 18:23:40,803 INFO L226 Difference]: Without dead ends: 1259 [2020-10-19 18:23:40,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2020-10-19 18:23:40,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1258. [2020-10-19 18:23:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-10-19 18:23:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2104 transitions. [2020-10-19 18:23:40,842 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2104 transitions. Word has length 29 [2020-10-19 18:23:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:40,843 INFO L481 AbstractCegarLoop]: Abstraction has 1258 states and 2104 transitions. [2020-10-19 18:23:40,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2104 transitions. [2020-10-19 18:23:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:40,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:40,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:40,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:23:40,846 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash 752825244, now seen corresponding path program 1 times [2020-10-19 18:23:40,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:40,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012629622] [2020-10-19 18:23:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:40,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012629622] [2020-10-19 18:23:40,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:40,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:40,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19652138] [2020-10-19 18:23:40,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:40,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:40,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:40,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:40,915 INFO L87 Difference]: Start difference. First operand 1258 states and 2104 transitions. Second operand 4 states. [2020-10-19 18:23:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,132 INFO L93 Difference]: Finished difference Result 1275 states and 2105 transitions. [2020-10-19 18:23:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:41,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,140 INFO L225 Difference]: With dead ends: 1275 [2020-10-19 18:23:41,141 INFO L226 Difference]: Without dead ends: 1275 [2020-10-19 18:23:41,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-10-19 18:23:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1274. [2020-10-19 18:23:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-10-19 18:23:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2104 transitions. [2020-10-19 18:23:41,200 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2104 transitions. Word has length 30 [2020-10-19 18:23:41,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,200 INFO L481 AbstractCegarLoop]: Abstraction has 1274 states and 2104 transitions. [2020-10-19 18:23:41,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2104 transitions. [2020-10-19 18:23:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:41,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:41,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:23:41,205 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1241319462, now seen corresponding path program 1 times [2020-10-19 18:23:41,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846149154] [2020-10-19 18:23:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:41,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846149154] [2020-10-19 18:23:41,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:41,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67006879] [2020-10-19 18:23:41,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:41,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:41,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:41,290 INFO L87 Difference]: Start difference. First operand 1274 states and 2104 transitions. Second operand 4 states. [2020-10-19 18:23:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,504 INFO L93 Difference]: Finished difference Result 2315 states and 3865 transitions. [2020-10-19 18:23:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:41,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,516 INFO L225 Difference]: With dead ends: 2315 [2020-10-19 18:23:41,516 INFO L226 Difference]: Without dead ends: 2315 [2020-10-19 18:23:41,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-10-19 18:23:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1802. [2020-10-19 18:23:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-19 18:23:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2904 transitions. [2020-10-19 18:23:41,602 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2904 transitions. Word has length 30 [2020-10-19 18:23:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,603 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 2904 transitions. [2020-10-19 18:23:41,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2904 transitions. [2020-10-19 18:23:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:41,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:41,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:23:41,606 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1465299932, now seen corresponding path program 1 times [2020-10-19 18:23:41,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262245582] [2020-10-19 18:23:41,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:41,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262245582] [2020-10-19 18:23:41,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:41,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603059996] [2020-10-19 18:23:41,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:41,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:41,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:41,651 INFO L87 Difference]: Start difference. First operand 1802 states and 2904 transitions. Second operand 4 states. [2020-10-19 18:23:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,816 INFO L93 Difference]: Finished difference Result 2475 states and 3977 transitions. [2020-10-19 18:23:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:41,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,829 INFO L225 Difference]: With dead ends: 2475 [2020-10-19 18:23:41,829 INFO L226 Difference]: Without dead ends: 2475 [2020-10-19 18:23:41,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2020-10-19 18:23:41,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2474. [2020-10-19 18:23:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2020-10-19 18:23:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3976 transitions. [2020-10-19 18:23:41,880 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3976 transitions. Word has length 30 [2020-10-19 18:23:41,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,880 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3976 transitions. [2020-10-19 18:23:41,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3976 transitions. [2020-10-19 18:23:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:41,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:41,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:23:41,884 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,885 INFO L82 PathProgramCache]: Analyzing trace with hash 180432529, now seen corresponding path program 1 times [2020-10-19 18:23:41,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675436119] [2020-10-19 18:23:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:41,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675436119] [2020-10-19 18:23:41,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:41,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406553887] [2020-10-19 18:23:41,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:41,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:41,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:41,935 INFO L87 Difference]: Start difference. First operand 2474 states and 3976 transitions. Second operand 4 states. [2020-10-19 18:23:42,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,101 INFO L93 Difference]: Finished difference Result 2507 states and 3977 transitions. [2020-10-19 18:23:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:42,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,114 INFO L225 Difference]: With dead ends: 2507 [2020-10-19 18:23:42,114 INFO L226 Difference]: Without dead ends: 2507 [2020-10-19 18:23:42,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-10-19 18:23:42,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2506. [2020-10-19 18:23:42,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2020-10-19 18:23:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3976 transitions. [2020-10-19 18:23:42,168 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3976 transitions. Word has length 31 [2020-10-19 18:23:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:42,168 INFO L481 AbstractCegarLoop]: Abstraction has 2506 states and 3976 transitions. [2020-10-19 18:23:42,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:42,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3976 transitions. [2020-10-19 18:23:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:42,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:42,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:42,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:23:42,172 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:42,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1813712177, now seen corresponding path program 1 times [2020-10-19 18:23:42,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:42,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422923821] [2020-10-19 18:23:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:42,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422923821] [2020-10-19 18:23:42,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:42,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305870965] [2020-10-19 18:23:42,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:42,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:42,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:42,219 INFO L87 Difference]: Start difference. First operand 2506 states and 3976 transitions. Second operand 4 states. [2020-10-19 18:23:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,375 INFO L93 Difference]: Finished difference Result 4491 states and 7209 transitions. [2020-10-19 18:23:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:42,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,396 INFO L225 Difference]: With dead ends: 4491 [2020-10-19 18:23:42,396 INFO L226 Difference]: Without dead ends: 4491 [2020-10-19 18:23:42,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:42,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2020-10-19 18:23:42,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 3594. [2020-10-19 18:23:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-19 18:23:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5544 transitions. [2020-10-19 18:23:42,475 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5544 transitions. Word has length 31 [2020-10-19 18:23:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:42,475 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 5544 transitions. [2020-10-19 18:23:42,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5544 transitions. [2020-10-19 18:23:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:42,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:42,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:42,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:23:42,481 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:42,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:42,482 INFO L82 PathProgramCache]: Analyzing trace with hash 892907217, now seen corresponding path program 1 times [2020-10-19 18:23:42,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:42,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696228849] [2020-10-19 18:23:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:42,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696228849] [2020-10-19 18:23:42,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:42,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613778567] [2020-10-19 18:23:42,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:42,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:42,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:42,525 INFO L87 Difference]: Start difference. First operand 3594 states and 5544 transitions. Second operand 4 states. [2020-10-19 18:23:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,677 INFO L93 Difference]: Finished difference Result 4875 states and 7497 transitions. [2020-10-19 18:23:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:42,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,699 INFO L225 Difference]: With dead ends: 4875 [2020-10-19 18:23:42,699 INFO L226 Difference]: Without dead ends: 4875 [2020-10-19 18:23:42,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2020-10-19 18:23:42,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4874. [2020-10-19 18:23:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4874 states. [2020-10-19 18:23:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 7496 transitions. [2020-10-19 18:23:42,790 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 7496 transitions. Word has length 31 [2020-10-19 18:23:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:42,791 INFO L481 AbstractCegarLoop]: Abstraction has 4874 states and 7496 transitions. [2020-10-19 18:23:42,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 7496 transitions. [2020-10-19 18:23:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 18:23:42,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:42,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:42,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 18:23:42,797 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:42,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:42,797 INFO L82 PathProgramCache]: Analyzing trace with hash -383861881, now seen corresponding path program 1 times [2020-10-19 18:23:42,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:42,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992053736] [2020-10-19 18:23:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:42,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992053736] [2020-10-19 18:23:42,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:42,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828448323] [2020-10-19 18:23:42,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:42,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:42,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:42,839 INFO L87 Difference]: Start difference. First operand 4874 states and 7496 transitions. Second operand 4 states. [2020-10-19 18:23:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,988 INFO L93 Difference]: Finished difference Result 4939 states and 7497 transitions. [2020-10-19 18:23:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:42,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-19 18:23:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,999 INFO L225 Difference]: With dead ends: 4939 [2020-10-19 18:23:43,000 INFO L226 Difference]: Without dead ends: 4939 [2020-10-19 18:23:43,000 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 [2020-10-19 18:23:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2020-10-19 18:23:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4938. [2020-10-19 18:23:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4938 states. [2020-10-19 18:23:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 7496 transitions. [2020-10-19 18:23:43,088 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 7496 transitions. Word has length 32 [2020-10-19 18:23:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:43,088 INFO L481 AbstractCegarLoop]: Abstraction has 4938 states and 7496 transitions. [2020-10-19 18:23:43,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 7496 transitions. [2020-10-19 18:23:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 18:23:43,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:43,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:43,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 18:23:43,095 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:43,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:43,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1916960709, now seen corresponding path program 1 times [2020-10-19 18:23:43,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:43,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912236252] [2020-10-19 18:23:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:43,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912236252] [2020-10-19 18:23:43,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:43,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:43,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332759304] [2020-10-19 18:23:43,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:43,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:43,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:43,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:43,158 INFO L87 Difference]: Start difference. First operand 4938 states and 7496 transitions. Second operand 4 states. [2020-10-19 18:23:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:43,368 INFO L93 Difference]: Finished difference Result 8715 states and 13385 transitions. [2020-10-19 18:23:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:43,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-19 18:23:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:43,391 INFO L225 Difference]: With dead ends: 8715 [2020-10-19 18:23:43,391 INFO L226 Difference]: Without dead ends: 8715 [2020-10-19 18:23:43,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2020-10-19 18:23:43,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 7178. [2020-10-19 18:23:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7178 states. [2020-10-19 18:23:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 10568 transitions. [2020-10-19 18:23:43,551 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 10568 transitions. Word has length 32 [2020-10-19 18:23:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:43,552 INFO L481 AbstractCegarLoop]: Abstraction has 7178 states and 10568 transitions. [2020-10-19 18:23:43,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:43,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 10568 transitions. [2020-10-19 18:23:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 18:23:43,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:43,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:43,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 18:23:43,564 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:43,565 INFO L82 PathProgramCache]: Analyzing trace with hash 328612807, now seen corresponding path program 1 times [2020-10-19 18:23:43,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:43,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601353588] [2020-10-19 18:23:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:43,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601353588] [2020-10-19 18:23:43,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:43,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:43,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152637731] [2020-10-19 18:23:43,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:43,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:43,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:43,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:43,633 INFO L87 Difference]: Start difference. First operand 7178 states and 10568 transitions. Second operand 4 states. [2020-10-19 18:23:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:43,882 INFO L93 Difference]: Finished difference Result 9611 states and 14089 transitions. [2020-10-19 18:23:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:43,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-19 18:23:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:43,901 INFO L225 Difference]: With dead ends: 9611 [2020-10-19 18:23:43,901 INFO L226 Difference]: Without dead ends: 9611 [2020-10-19 18:23:43,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:43,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9611 states. [2020-10-19 18:23:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9611 to 9610. [2020-10-19 18:23:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9610 states. [2020-10-19 18:23:44,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 14088 transitions. [2020-10-19 18:23:44,035 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 14088 transitions. Word has length 32 [2020-10-19 18:23:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:44,035 INFO L481 AbstractCegarLoop]: Abstraction has 9610 states and 14088 transitions. [2020-10-19 18:23:44,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:44,036 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 14088 transitions. [2020-10-19 18:23:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:23:44,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:44,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:44,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 18:23:44,048 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:44,049 INFO L82 PathProgramCache]: Analyzing trace with hash -697108836, now seen corresponding path program 1 times [2020-10-19 18:23:44,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:44,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754897474] [2020-10-19 18:23:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:44,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:44,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754897474] [2020-10-19 18:23:44,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:44,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:44,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619442773] [2020-10-19 18:23:44,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:44,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:44,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:44,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:44,096 INFO L87 Difference]: Start difference. First operand 9610 states and 14088 transitions. Second operand 4 states. [2020-10-19 18:23:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:44,257 INFO L93 Difference]: Finished difference Result 9739 states and 14089 transitions. [2020-10-19 18:23:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:44,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-19 18:23:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:44,282 INFO L225 Difference]: With dead ends: 9739 [2020-10-19 18:23:44,283 INFO L226 Difference]: Without dead ends: 9739 [2020-10-19 18:23:44,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2020-10-19 18:23:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 9738. [2020-10-19 18:23:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9738 states. [2020-10-19 18:23:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 14088 transitions. [2020-10-19 18:23:44,435 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 14088 transitions. Word has length 33 [2020-10-19 18:23:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:44,435 INFO L481 AbstractCegarLoop]: Abstraction has 9738 states and 14088 transitions. [2020-10-19 18:23:44,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 14088 transitions. [2020-10-19 18:23:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:23:44,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:44,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:44,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 18:23:44,451 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:44,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:44,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1603713754, now seen corresponding path program 1 times [2020-10-19 18:23:44,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:44,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392277529] [2020-10-19 18:23:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:44,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:44,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392277529] [2020-10-19 18:23:44,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:44,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:44,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227968054] [2020-10-19 18:23:44,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:44,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:44,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:44,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:44,541 INFO L87 Difference]: Start difference. First operand 9738 states and 14088 transitions. Second operand 4 states. [2020-10-19 18:23:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:44,728 INFO L93 Difference]: Finished difference Result 16907 states and 24713 transitions. [2020-10-19 18:23:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:44,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-19 18:23:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:44,769 INFO L225 Difference]: With dead ends: 16907 [2020-10-19 18:23:44,770 INFO L226 Difference]: Without dead ends: 16907 [2020-10-19 18:23:44,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16907 states. [2020-10-19 18:23:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16907 to 14346. [2020-10-19 18:23:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14346 states. [2020-10-19 18:23:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14346 states to 14346 states and 20104 transitions. [2020-10-19 18:23:44,979 INFO L78 Accepts]: Start accepts. Automaton has 14346 states and 20104 transitions. Word has length 33 [2020-10-19 18:23:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:44,980 INFO L481 AbstractCegarLoop]: Abstraction has 14346 states and 20104 transitions. [2020-10-19 18:23:44,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 14346 states and 20104 transitions. [2020-10-19 18:23:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:23:44,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:44,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:44,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 18:23:45,000 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:45,000 INFO L82 PathProgramCache]: Analyzing trace with hash 15365852, now seen corresponding path program 1 times [2020-10-19 18:23:45,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:45,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628265183] [2020-10-19 18:23:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:45,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628265183] [2020-10-19 18:23:45,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:45,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:45,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603852892] [2020-10-19 18:23:45,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:45,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:45,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:45,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:45,044 INFO L87 Difference]: Start difference. First operand 14346 states and 20104 transitions. Second operand 4 states. [2020-10-19 18:23:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:45,222 INFO L93 Difference]: Finished difference Result 18955 states and 26377 transitions. [2020-10-19 18:23:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:45,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-19 18:23:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:45,250 INFO L225 Difference]: With dead ends: 18955 [2020-10-19 18:23:45,250 INFO L226 Difference]: Without dead ends: 18955 [2020-10-19 18:23:45,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18955 states. [2020-10-19 18:23:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18955 to 18954. [2020-10-19 18:23:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18954 states. [2020-10-19 18:23:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18954 states to 18954 states and 26376 transitions. [2020-10-19 18:23:45,573 INFO L78 Accepts]: Start accepts. Automaton has 18954 states and 26376 transitions. Word has length 33 [2020-10-19 18:23:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:45,573 INFO L481 AbstractCegarLoop]: Abstraction has 18954 states and 26376 transitions. [2020-10-19 18:23:45,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 18954 states and 26376 transitions. [2020-10-19 18:23:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:23:45,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:45,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:45,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 18:23:45,601 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:45,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:45,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1817819278, now seen corresponding path program 1 times [2020-10-19 18:23:45,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:45,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129336735] [2020-10-19 18:23:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:45,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129336735] [2020-10-19 18:23:45,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:45,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:45,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276307683] [2020-10-19 18:23:45,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:45,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:45,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:45,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:45,658 INFO L87 Difference]: Start difference. First operand 18954 states and 26376 transitions. Second operand 4 states. [2020-10-19 18:23:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:45,843 INFO L93 Difference]: Finished difference Result 19211 states and 26377 transitions. [2020-10-19 18:23:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:45,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-19 18:23:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:45,870 INFO L225 Difference]: With dead ends: 19211 [2020-10-19 18:23:45,871 INFO L226 Difference]: Without dead ends: 19211 [2020-10-19 18:23:45,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19211 states. [2020-10-19 18:23:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19211 to 19210. [2020-10-19 18:23:46,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19210 states. [2020-10-19 18:23:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19210 states to 19210 states and 26376 transitions. [2020-10-19 18:23:46,102 INFO L78 Accepts]: Start accepts. Automaton has 19210 states and 26376 transitions. Word has length 34 [2020-10-19 18:23:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:46,103 INFO L481 AbstractCegarLoop]: Abstraction has 19210 states and 26376 transitions. [2020-10-19 18:23:46,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 19210 states and 26376 transitions. [2020-10-19 18:23:46,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:23:46,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:46,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:46,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 18:23:46,121 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:46,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:46,121 INFO L82 PathProgramCache]: Analyzing trace with hash 483003312, now seen corresponding path program 1 times [2020-10-19 18:23:46,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:46,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913160413] [2020-10-19 18:23:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:46,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913160413] [2020-10-19 18:23:46,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:46,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:46,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605096251] [2020-10-19 18:23:46,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:46,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:46,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:46,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:46,171 INFO L87 Difference]: Start difference. First operand 19210 states and 26376 transitions. Second operand 4 states. [2020-10-19 18:23:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:46,391 INFO L93 Difference]: Finished difference Result 37387 states and 49673 transitions. [2020-10-19 18:23:46,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:46,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-19 18:23:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:46,445 INFO L225 Difference]: With dead ends: 37387 [2020-10-19 18:23:46,445 INFO L226 Difference]: Without dead ends: 37387 [2020-10-19 18:23:46,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:46,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37387 states. [2020-10-19 18:23:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37387 to 37386. [2020-10-19 18:23:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-10-19 18:23:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 49672 transitions. [2020-10-19 18:23:47,164 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 49672 transitions. Word has length 34 [2020-10-19 18:23:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:47,164 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 49672 transitions. [2020-10-19 18:23:47,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 49672 transitions. [2020-10-19 18:23:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:23:47,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:47,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:47,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 18:23:47,193 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:47,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2071351214, now seen corresponding path program 1 times [2020-10-19 18:23:47,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:47,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798733112] [2020-10-19 18:23:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:47,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:47,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798733112] [2020-10-19 18:23:47,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:47,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:47,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281499180] [2020-10-19 18:23:47,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:47,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:47,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:47,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:47,271 INFO L87 Difference]: Start difference. First operand 37386 states and 49672 transitions. Second operand 4 states. [2020-10-19 18:23:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:47,491 INFO L93 Difference]: Finished difference Result 41483 states and 56329 transitions. [2020-10-19 18:23:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:47,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-19 18:23:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:47,548 INFO L225 Difference]: With dead ends: 41483 [2020-10-19 18:23:47,548 INFO L226 Difference]: Without dead ends: 41483 [2020-10-19 18:23:47,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:47,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41483 states. [2020-10-19 18:23:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41483 to 37386. [2020-10-19 18:23:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-10-19 18:23:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 49160 transitions. [2020-10-19 18:23:48,017 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 49160 transitions. Word has length 34 [2020-10-19 18:23:48,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:48,018 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 49160 transitions. [2020-10-19 18:23:48,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:48,018 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 49160 transitions. [2020-10-19 18:23:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:23:48,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:48,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:48,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 18:23:48,034 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:48,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2094873255, now seen corresponding path program 1 times [2020-10-19 18:23:48,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:48,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350396771] [2020-10-19 18:23:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:48,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350396771] [2020-10-19 18:23:48,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:48,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:48,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060564123] [2020-10-19 18:23:48,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:48,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:48,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:48,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:48,087 INFO L87 Difference]: Start difference. First operand 37386 states and 49160 transitions. Second operand 4 states. [2020-10-19 18:23:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:48,399 INFO L93 Difference]: Finished difference Result 62987 states and 82953 transitions. [2020-10-19 18:23:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:48,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 18:23:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:48,494 INFO L225 Difference]: With dead ends: 62987 [2020-10-19 18:23:48,495 INFO L226 Difference]: Without dead ends: 62987 [2020-10-19 18:23:48,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62987 states. [2020-10-19 18:23:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62987 to 56842. [2020-10-19 18:23:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56842 states. [2020-10-19 18:23:49,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56842 states to 56842 states and 72712 transitions. [2020-10-19 18:23:49,523 INFO L78 Accepts]: Start accepts. Automaton has 56842 states and 72712 transitions. Word has length 35 [2020-10-19 18:23:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:49,523 INFO L481 AbstractCegarLoop]: Abstraction has 56842 states and 72712 transitions. [2020-10-19 18:23:49,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:49,524 INFO L276 IsEmpty]: Start isEmpty. Operand 56842 states and 72712 transitions. [2020-10-19 18:23:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:23:49,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:49,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:49,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 18:23:49,565 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:49,565 INFO L82 PathProgramCache]: Analyzing trace with hash 506525353, now seen corresponding path program 1 times [2020-10-19 18:23:49,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:49,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623942372] [2020-10-19 18:23:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:49,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623942372] [2020-10-19 18:23:49,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:49,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:49,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329216021] [2020-10-19 18:23:49,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:49,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:49,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:49,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:49,606 INFO L87 Difference]: Start difference. First operand 56842 states and 72712 transitions. Second operand 4 states. [2020-10-19 18:23:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:49,916 INFO L93 Difference]: Finished difference Result 73227 states and 92169 transitions. [2020-10-19 18:23:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:49,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 18:23:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:49,976 INFO L225 Difference]: With dead ends: 73227 [2020-10-19 18:23:49,976 INFO L226 Difference]: Without dead ends: 73227 [2020-10-19 18:23:49,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73227 states. [2020-10-19 18:23:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73227 to 73226. [2020-10-19 18:23:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73226 states. [2020-10-19 18:23:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73226 states to 73226 states and 92168 transitions. [2020-10-19 18:23:51,275 INFO L78 Accepts]: Start accepts. Automaton has 73226 states and 92168 transitions. Word has length 35 [2020-10-19 18:23:51,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:51,276 INFO L481 AbstractCegarLoop]: Abstraction has 73226 states and 92168 transitions. [2020-10-19 18:23:51,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:51,276 INFO L276 IsEmpty]: Start isEmpty. Operand 73226 states and 92168 transitions. [2020-10-19 18:23:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:23:51,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:51,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:51,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 18:23:51,320 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:51,321 INFO L82 PathProgramCache]: Analyzing trace with hash 523244507, now seen corresponding path program 1 times [2020-10-19 18:23:51,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:51,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290438500] [2020-10-19 18:23:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:51,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:51,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290438500] [2020-10-19 18:23:51,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:51,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:51,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992390473] [2020-10-19 18:23:51,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:51,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:51,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:51,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:51,363 INFO L87 Difference]: Start difference. First operand 73226 states and 92168 transitions. Second operand 4 states. [2020-10-19 18:23:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:51,683 INFO L93 Difference]: Finished difference Result 74763 states and 93193 transitions. [2020-10-19 18:23:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:51,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-19 18:23:51,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:51,753 INFO L225 Difference]: With dead ends: 74763 [2020-10-19 18:23:51,754 INFO L226 Difference]: Without dead ends: 74763 [2020-10-19 18:23:51,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74763 states. [2020-10-19 18:23:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74763 to 74762. [2020-10-19 18:23:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74762 states. [2020-10-19 18:23:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74762 states to 74762 states and 93192 transitions. [2020-10-19 18:23:52,464 INFO L78 Accepts]: Start accepts. Automaton has 74762 states and 93192 transitions. Word has length 36 [2020-10-19 18:23:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:52,464 INFO L481 AbstractCegarLoop]: Abstraction has 74762 states and 93192 transitions. [2020-10-19 18:23:52,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 74762 states and 93192 transitions. [2020-10-19 18:23:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:23:52,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:52,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:52,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 18:23:52,499 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:52,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1470900199, now seen corresponding path program 1 times [2020-10-19 18:23:52,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:52,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396162715] [2020-10-19 18:23:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:52,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396162715] [2020-10-19 18:23:52,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:52,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:52,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395765004] [2020-10-19 18:23:52,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:52,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:52,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:52,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:52,541 INFO L87 Difference]: Start difference. First operand 74762 states and 93192 transitions. Second operand 4 states. [2020-10-19 18:23:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:53,570 INFO L93 Difference]: Finished difference Result 122891 states and 151561 transitions. [2020-10-19 18:23:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:53,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-19 18:23:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:53,695 INFO L225 Difference]: With dead ends: 122891 [2020-10-19 18:23:53,695 INFO L226 Difference]: Without dead ends: 122891 [2020-10-19 18:23:53,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122891 states. [2020-10-19 18:23:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122891 to 114698. [2020-10-19 18:23:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114698 states. [2020-10-19 18:23:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114698 states to 114698 states and 139272 transitions. [2020-10-19 18:23:54,765 INFO L78 Accepts]: Start accepts. Automaton has 114698 states and 139272 transitions. Word has length 36 [2020-10-19 18:23:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:54,765 INFO L481 AbstractCegarLoop]: Abstraction has 114698 states and 139272 transitions. [2020-10-19 18:23:54,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 114698 states and 139272 transitions. [2020-10-19 18:23:54,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:23:54,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:54,842 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:54,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-19 18:23:54,842 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:54,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:54,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1235719195, now seen corresponding path program 1 times [2020-10-19 18:23:54,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:54,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356267542] [2020-10-19 18:23:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:54,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:54,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356267542] [2020-10-19 18:23:54,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:54,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:54,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140643958] [2020-10-19 18:23:54,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:54,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:54,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:54,895 INFO L87 Difference]: Start difference. First operand 114698 states and 139272 transitions. Second operand 4 states. [2020-10-19 18:23:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:55,391 INFO L93 Difference]: Finished difference Result 145419 states and 172041 transitions. [2020-10-19 18:23:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:55,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-19 18:23:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:56,478 INFO L225 Difference]: With dead ends: 145419 [2020-10-19 18:23:56,479 INFO L226 Difference]: Without dead ends: 145419 [2020-10-19 18:23:56,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:56,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145419 states. [2020-10-19 18:23:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145419 to 145418. [2020-10-19 18:23:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145418 states. [2020-10-19 18:23:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145418 states to 145418 states and 172040 transitions. [2020-10-19 18:23:57,660 INFO L78 Accepts]: Start accepts. Automaton has 145418 states and 172040 transitions. Word has length 36 [2020-10-19 18:23:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:57,661 INFO L481 AbstractCegarLoop]: Abstraction has 145418 states and 172040 transitions. [2020-10-19 18:23:57,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 145418 states and 172040 transitions. [2020-10-19 18:23:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:23:57,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:57,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:57,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-19 18:23:57,762 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:57,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1653427700, now seen corresponding path program 1 times [2020-10-19 18:23:57,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:57,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730543878] [2020-10-19 18:23:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:57,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730543878] [2020-10-19 18:23:57,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:57,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:57,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411012821] [2020-10-19 18:23:57,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:57,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:57,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:57,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:57,805 INFO L87 Difference]: Start difference. First operand 145418 states and 172040 transitions. Second operand 4 states. [2020-10-19 18:23:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:58,445 INFO L93 Difference]: Finished difference Result 147467 states and 172041 transitions. [2020-10-19 18:23:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:58,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-19 18:23:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:01,701 INFO L225 Difference]: With dead ends: 147467 [2020-10-19 18:24:01,702 INFO L226 Difference]: Without dead ends: 147467 [2020-10-19 18:24:01,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:24:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147467 states. [2020-10-19 18:24:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147467 to 147466. [2020-10-19 18:24:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147466 states. [2020-10-19 18:24:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147466 states to 147466 states and 172040 transitions. [2020-10-19 18:24:03,348 INFO L78 Accepts]: Start accepts. Automaton has 147466 states and 172040 transitions. Word has length 37 [2020-10-19 18:24:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:03,348 INFO L481 AbstractCegarLoop]: Abstraction has 147466 states and 172040 transitions. [2020-10-19 18:24:03,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:03,349 INFO L276 IsEmpty]: Start isEmpty. Operand 147466 states and 172040 transitions. [2020-10-19 18:24:03,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:24:03,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:03,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:03,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-19 18:24:03,424 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:24:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:03,424 INFO L82 PathProgramCache]: Analyzing trace with hash -340717006, now seen corresponding path program 1 times [2020-10-19 18:24:03,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:03,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36606226] [2020-10-19 18:24:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:03,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36606226] [2020-10-19 18:24:03,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:03,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:24:03,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169565907] [2020-10-19 18:24:03,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:03,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:03,476 INFO L87 Difference]: Start difference. First operand 147466 states and 172040 transitions. Second operand 4 states. [2020-10-19 18:24:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:04,205 INFO L93 Difference]: Finished difference Result 237578 states and 270344 transitions. [2020-10-19 18:24:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:24:04,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-19 18:24:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:04,534 INFO L225 Difference]: With dead ends: 237578 [2020-10-19 18:24:04,535 INFO L226 Difference]: Without dead ends: 237578 [2020-10-19 18:24:04,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:24:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237578 states. [2020-10-19 18:24:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237578 to 229386. [2020-10-19 18:24:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229386 states. [2020-10-19 18:24:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229386 states to 229386 states and 262152 transitions. [2020-10-19 18:24:07,305 INFO L78 Accepts]: Start accepts. Automaton has 229386 states and 262152 transitions. Word has length 37 [2020-10-19 18:24:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:07,306 INFO L481 AbstractCegarLoop]: Abstraction has 229386 states and 262152 transitions. [2020-10-19 18:24:07,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 229386 states and 262152 transitions. [2020-10-19 18:24:07,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:24:07,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:07,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:07,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-19 18:24:07,455 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:24:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:07,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1929064908, now seen corresponding path program 1 times [2020-10-19 18:24:07,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:07,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728243829] [2020-10-19 18:24:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:07,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728243829] [2020-10-19 18:24:07,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:07,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:24:07,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506445346] [2020-10-19 18:24:07,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:07,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:07,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:07,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:07,500 INFO L87 Difference]: Start difference. First operand 229386 states and 262152 transitions. Second operand 4 states. [2020-10-19 18:24:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:09,132 INFO L93 Difference]: Finished difference Result 286727 states and 315398 transitions. [2020-10-19 18:24:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:24:09,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-19 18:24:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:09,133 INFO L225 Difference]: With dead ends: 286727 [2020-10-19 18:24:09,133 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:24:09,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:24:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:24:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:24:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:24:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:24:09,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-19 18:24:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:09,134 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:24:09,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:24:09,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:24:09,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-19 18:24:09,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:24:09 BoogieIcfgContainer [2020-10-19 18:24:09,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:24:09,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:24:09,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:24:09,141 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:24:09,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:36" (3/4) ... [2020-10-19 18:24:09,145 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:24:09,162 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-19 18:24:09,162 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:24:09,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:24:09,174 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-19 18:24:09,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 18:24:09,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:24:09,176 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:24:09,240 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:24:09,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:24:09,243 INFO L168 Benchmark]: Toolchain (without parser) took 33820.83 ms. Allocated memory was 1.0 GB in the beginning and 4.5 GB in the end (delta: 3.5 GB). Free memory was 957.3 MB in the beginning and 3.7 GB in the end (delta: -2.7 GB). Peak memory consumption was 772.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:09,243 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:09,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 957.3 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:09,244 INFO L168 Benchmark]: Boogie Preprocessor took 59.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:09,245 INFO L168 Benchmark]: RCFGBuilder took 516.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:09,245 INFO L168 Benchmark]: TraceAbstraction took 32724.36 ms. Allocated memory was 1.2 GB in the beginning and 4.5 GB in the end (delta: 3.4 GB). Free memory was 1.1 GB in the beginning and 3.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 11.5 GB. [2020-10-19 18:24:09,245 INFO L168 Benchmark]: Witness Printer took 99.73 ms. Allocated memory is still 4.5 GB. Free memory was 3.7 GB in the beginning and 3.7 GB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:09,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 404.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 957.3 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 516.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 32724.36 ms. Allocated memory was 1.2 GB in the beginning and 4.5 GB in the end (delta: 3.4 GB). Free memory was 1.1 GB in the beginning and 3.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 11.5 GB. * Witness Printer took 99.73 ms. Allocated memory is still 4.5 GB. Free memory was 3.7 GB in the beginning and 3.7 GB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.6s, OverallIterations: 37, TraceHistogramMax: 1, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4030 SDtfs, 5963 SDslu, 278 SDs, 0 SdLazy, 2828 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229386occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.8s AutomataMinimizationTime, 37 MinimizatonAttempts, 32772 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1131 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1094 ConstructedInterpolants, 0 QuantifiedInterpolants, 99116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 37 InterpolantComputations, 37 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...