./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_14-1.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_14-1.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 1e59705ae4b9d6434bb0d27311e7a023ef1b3945 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 18:23:35,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:23:35,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:23:35,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:23:35,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:23:35,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:23:35,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:23:35,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:23:35,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:23:35,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:23:35,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:23:35,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:23:35,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:23:35,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:23:35,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:23:35,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:23:35,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:23:35,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:23:35,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:23:35,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:23:35,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:23:35,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:23:35,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:23:35,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:23:35,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:23:35,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:23:35,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:23:35,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:23:35,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:23:35,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:23:35,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:23:35,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:23:35,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:23:35,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:23:35,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:23:35,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:23:35,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:23:35,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:23:35,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:23:35,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:23:35,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:23:35,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:23:35,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:23:35,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:23:35,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:23:35,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:23:35,361 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:23:35,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:23:35,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:23:35,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:23:35,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:23:35,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:23:35,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:23:35,363 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:23:35,364 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:23:35,364 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:23:35,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:23:35,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:23:35,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:23:35,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:23:35,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:23:35,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:23:35,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:23:35,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:23:35,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:35,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:23:35,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:23:35,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:23:35,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:23:35,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:23:35,369 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 -> 1e59705ae4b9d6434bb0d27311e7a023ef1b3945 [2020-10-19 18:23:35,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:23:35,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:23:35,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:23:35,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:23:35,758 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:23:35,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_14-1.c [2020-10-19 18:23:35,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0e86cbc/fbce10df0e6c4ddfb662b90859b960dc/FLAG20b2f792b [2020-10-19 18:23:36,306 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:23:36,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_14-1.c [2020-10-19 18:23:36,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0e86cbc/fbce10df0e6c4ddfb662b90859b960dc/FLAG20b2f792b [2020-10-19 18:23:36,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0e86cbc/fbce10df0e6c4ddfb662b90859b960dc [2020-10-19 18:23:36,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:23:36,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:23:36,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:36,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:23:36,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:23:36,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:36" (1/1) ... [2020-10-19 18:23:36,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0be566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:36, skipping insertion in model container [2020-10-19 18:23:36,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:36" (1/1) ... [2020-10-19 18:23:36,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:23:36,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:23:37,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:37,045 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:23:37,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:37,173 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:23:37,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37 WrapperNode [2020-10-19 18:23:37,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:37,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:23:37,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:23:37,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:23:37,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (1/1) ... [2020-10-19 18:23:37,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (1/1) ... [2020-10-19 18:23:37,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (1/1) ... [2020-10-19 18:23:37,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (1/1) ... [2020-10-19 18:23:37,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (1/1) ... [2020-10-19 18:23:37,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (1/1) ... [2020-10-19 18:23:37,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (1/1) ... [2020-10-19 18:23:37,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:23:37,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:23:37,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:23:37,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:23:37,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (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 18:23:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:23:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:23:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:23:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:23:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:23:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:23:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:23:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:23:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:23:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:23:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:23:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:23:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:23:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:23:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:23:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:23:37,812 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:23:37,813 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 18:23:37,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:37 BoogieIcfgContainer [2020-10-19 18:23:37,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:23:37,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:23:37,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:23:37,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:23:37,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:23:36" (1/3) ... [2020-10-19 18:23:37,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5893f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:37, skipping insertion in model container [2020-10-19 18:23:37,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:37" (2/3) ... [2020-10-19 18:23:37,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5893f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:37, skipping insertion in model container [2020-10-19 18:23:37,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:37" (3/3) ... [2020-10-19 18:23:37,825 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2020-10-19 18:23:37,838 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:23:37,846 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:23:37,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:23:37,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:23:37,884 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:23:37,885 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:23:37,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:23:37,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:23:37,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:23:37,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:23:37,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:23:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-10-19 18:23:37,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:23:37,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:37,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:37,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:37,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1491239536, now seen corresponding path program 1 times [2020-10-19 18:23:37,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:37,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866275542] [2020-10-19 18:23:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,171 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 18:23:38,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866275542] [2020-10-19 18:23:38,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:38,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:23:38,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903221113] [2020-10-19 18:23:38,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:23:38,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:38,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:23:38,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:38,194 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-10-19 18:23:38,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:38,253 INFO L93 Difference]: Finished difference Result 58 states and 99 transitions. [2020-10-19 18:23:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:23:38,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-19 18:23:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:38,268 INFO L225 Difference]: With dead ends: 58 [2020-10-19 18:23:38,268 INFO L226 Difference]: Without dead ends: 53 [2020-10-19 18:23:38,270 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 18:23:38,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-19 18:23:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-19 18:23:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-19 18:23:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 94 transitions. [2020-10-19 18:23:38,318 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 94 transitions. Word has length 9 [2020-10-19 18:23:38,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:38,319 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 94 transitions. [2020-10-19 18:23:38,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:23:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 94 transitions. [2020-10-19 18:23:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:23:38,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:38,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:38,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:23:38,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:38,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:38,322 INFO L82 PathProgramCache]: Analyzing trace with hash -591001697, now seen corresponding path program 1 times [2020-10-19 18:23:38,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:38,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333368534] [2020-10-19 18:23:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,456 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 18:23:38,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333368534] [2020-10-19 18:23:38,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:38,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:38,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031578429] [2020-10-19 18:23:38,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:38,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:38,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:38,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:38,460 INFO L87 Difference]: Start difference. First operand 53 states and 94 transitions. Second operand 4 states. [2020-10-19 18:23:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:38,813 INFO L93 Difference]: Finished difference Result 97 states and 178 transitions. [2020-10-19 18:23:38,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:38,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-19 18:23:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:38,817 INFO L225 Difference]: With dead ends: 97 [2020-10-19 18:23:38,818 INFO L226 Difference]: Without dead ends: 97 [2020-10-19 18:23:38,819 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 18:23:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-19 18:23:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 68. [2020-10-19 18:23:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:23:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 123 transitions. [2020-10-19 18:23:38,842 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 123 transitions. Word has length 26 [2020-10-19 18:23:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:38,842 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 123 transitions. [2020-10-19 18:23:38,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 123 transitions. [2020-10-19 18:23:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:23:38,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:38,844 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 18:23:38,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:23:38,845 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1709820893, now seen corresponding path program 1 times [2020-10-19 18:23:38,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:38,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191086433] [2020-10-19 18:23:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,937 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 18:23:38,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191086433] [2020-10-19 18:23:38,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:38,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:38,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710547218] [2020-10-19 18:23:38,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:38,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:38,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:38,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:38,940 INFO L87 Difference]: Start difference. First operand 68 states and 123 transitions. Second operand 4 states. [2020-10-19 18:23:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:39,185 INFO L93 Difference]: Finished difference Result 97 states and 176 transitions. [2020-10-19 18:23:39,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:39,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-19 18:23:39,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:39,190 INFO L225 Difference]: With dead ends: 97 [2020-10-19 18:23:39,190 INFO L226 Difference]: Without dead ends: 97 [2020-10-19 18:23:39,193 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 18:23:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-19 18:23:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-19 18:23:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-19 18:23:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 175 transitions. [2020-10-19 18:23:39,218 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 175 transitions. Word has length 26 [2020-10-19 18:23:39,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:39,219 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 175 transitions. [2020-10-19 18:23:39,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 175 transitions. [2020-10-19 18:23:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:39,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:39,221 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 18:23:39,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:23:39,222 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:39,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1134616135, now seen corresponding path program 1 times [2020-10-19 18:23:39,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:39,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575315522] [2020-10-19 18:23:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,384 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 18:23:39,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575315522] [2020-10-19 18:23:39,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:39,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:39,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997015125] [2020-10-19 18:23:39,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:39,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:39,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:39,390 INFO L87 Difference]: Start difference. First operand 96 states and 175 transitions. Second operand 4 states. [2020-10-19 18:23:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:39,623 INFO L93 Difference]: Finished difference Result 100 states and 178 transitions. [2020-10-19 18:23:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:39,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:39,626 INFO L225 Difference]: With dead ends: 100 [2020-10-19 18:23:39,626 INFO L226 Difference]: Without dead ends: 100 [2020-10-19 18:23:39,627 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 18:23:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-19 18:23:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-19 18:23:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-19 18:23:39,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 177 transitions. [2020-10-19 18:23:39,638 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 177 transitions. Word has length 27 [2020-10-19 18:23:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:39,638 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 177 transitions. [2020-10-19 18:23:39,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 177 transitions. [2020-10-19 18:23:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:39,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:39,640 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 18:23:39,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:23:39,641 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:39,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:39,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1471407419, now seen corresponding path program 1 times [2020-10-19 18:23:39,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:39,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871995584] [2020-10-19 18:23:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:39,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871995584] [2020-10-19 18:23:39,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:39,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:39,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305970336] [2020-10-19 18:23:39,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:39,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:39,717 INFO L87 Difference]: Start difference. First operand 99 states and 177 transitions. Second operand 4 states. [2020-10-19 18:23:39,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:39,920 INFO L93 Difference]: Finished difference Result 185 states and 335 transitions. [2020-10-19 18:23:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:39,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:39,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:39,923 INFO L225 Difference]: With dead ends: 185 [2020-10-19 18:23:39,923 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 18:23:39,924 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 18:23:39,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 18:23:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2020-10-19 18:23:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 18:23:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 334 transitions. [2020-10-19 18:23:39,937 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 334 transitions. Word has length 27 [2020-10-19 18:23:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:39,938 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 334 transitions. [2020-10-19 18:23:39,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 334 transitions. [2020-10-19 18:23:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:39,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:39,940 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 18:23:39,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:23:39,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:39,942 INFO L82 PathProgramCache]: Analyzing trace with hash -829415171, now seen corresponding path program 1 times [2020-10-19 18:23:39,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:39,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216241626] [2020-10-19 18:23:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,014 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 18:23:40,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216241626] [2020-10-19 18:23:40,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:40,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:40,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800174396] [2020-10-19 18:23:40,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:40,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:40,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:40,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:40,018 INFO L87 Difference]: Start difference. First operand 184 states and 334 transitions. Second operand 4 states. [2020-10-19 18:23:40,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:40,209 INFO L93 Difference]: Finished difference Result 237 states and 433 transitions. [2020-10-19 18:23:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:40,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:40,212 INFO L225 Difference]: With dead ends: 237 [2020-10-19 18:23:40,212 INFO L226 Difference]: Without dead ends: 237 [2020-10-19 18:23:40,213 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 18:23:40,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-19 18:23:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 184. [2020-10-19 18:23:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 18:23:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 332 transitions. [2020-10-19 18:23:40,223 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 332 transitions. Word has length 27 [2020-10-19 18:23:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:40,224 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 332 transitions. [2020-10-19 18:23:40,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:40,224 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 332 transitions. [2020-10-19 18:23:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:40,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:40,226 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 18:23:40,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:23:40,226 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:40,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1624432408, now seen corresponding path program 1 times [2020-10-19 18:23:40,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:40,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895099009] [2020-10-19 18:23:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,302 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 18:23:40,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895099009] [2020-10-19 18:23:40,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:40,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:40,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424209883] [2020-10-19 18:23:40,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:40,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:40,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:40,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:40,304 INFO L87 Difference]: Start difference. First operand 184 states and 332 transitions. Second operand 4 states. [2020-10-19 18:23:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:40,502 INFO L93 Difference]: Finished difference Result 345 states and 631 transitions. [2020-10-19 18:23:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:40,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-19 18:23:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:40,506 INFO L225 Difference]: With dead ends: 345 [2020-10-19 18:23:40,506 INFO L226 Difference]: Without dead ends: 345 [2020-10-19 18:23:40,506 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 18:23:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-19 18:23:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 248. [2020-10-19 18:23:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-19 18:23:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 446 transitions. [2020-10-19 18:23:40,520 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 446 transitions. Word has length 28 [2020-10-19 18:23:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:40,520 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 446 transitions. [2020-10-19 18:23:40,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 446 transitions. [2020-10-19 18:23:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:40,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:40,523 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 18:23:40,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:23:40,524 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:40,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:40,524 INFO L82 PathProgramCache]: Analyzing trace with hash 676390182, now seen corresponding path program 1 times [2020-10-19 18:23:40,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:40,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004361204] [2020-10-19 18:23:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,612 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 18:23:40,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004361204] [2020-10-19 18:23:40,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:40,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:40,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506894784] [2020-10-19 18:23:40,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:40,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:40,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:40,618 INFO L87 Difference]: Start difference. First operand 248 states and 446 transitions. Second operand 4 states. [2020-10-19 18:23:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:40,808 INFO L93 Difference]: Finished difference Result 353 states and 633 transitions. [2020-10-19 18:23:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:40,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-19 18:23:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:40,811 INFO L225 Difference]: With dead ends: 353 [2020-10-19 18:23:40,811 INFO L226 Difference]: Without dead ends: 353 [2020-10-19 18:23:40,812 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 18:23:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-19 18:23:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 352. [2020-10-19 18:23:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-19 18:23:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 632 transitions. [2020-10-19 18:23:40,822 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 632 transitions. Word has length 28 [2020-10-19 18:23:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:40,822 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 632 transitions. [2020-10-19 18:23:40,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 632 transitions. [2020-10-19 18:23:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:40,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:40,824 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 18:23:40,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:23:40,825 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:40,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:40,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1188791334, now seen corresponding path program 1 times [2020-10-19 18:23:40,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:40,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425945307] [2020-10-19 18:23:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,876 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 18:23:40,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425945307] [2020-10-19 18:23:40,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:40,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:40,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075307057] [2020-10-19 18:23:40,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:40,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:40,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:40,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:40,879 INFO L87 Difference]: Start difference. First operand 352 states and 632 transitions. Second operand 4 states. [2020-10-19 18:23:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,071 INFO L93 Difference]: Finished difference Result 359 states and 637 transitions. [2020-10-19 18:23:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:41,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,074 INFO L225 Difference]: With dead ends: 359 [2020-10-19 18:23:41,074 INFO L226 Difference]: Without dead ends: 359 [2020-10-19 18:23:41,074 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 18:23:41,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-19 18:23:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 358. [2020-10-19 18:23:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-19 18:23:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 636 transitions. [2020-10-19 18:23:41,085 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 636 transitions. Word has length 29 [2020-10-19 18:23:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,085 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 636 transitions. [2020-10-19 18:23:41,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 636 transitions. [2020-10-19 18:23:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:41,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,087 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 18:23:41,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:23:41,087 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,088 INFO L82 PathProgramCache]: Analyzing trace with hash -500152408, now seen corresponding path program 1 times [2020-10-19 18:23:41,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247703844] [2020-10-19 18:23:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,138 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 18:23:41,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247703844] [2020-10-19 18:23:41,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:41,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640141780] [2020-10-19 18:23:41,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:41,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:41,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:41,141 INFO L87 Difference]: Start difference. First operand 358 states and 636 transitions. Second operand 4 states. [2020-10-19 18:23:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,332 INFO L93 Difference]: Finished difference Result 667 states and 1197 transitions. [2020-10-19 18:23:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:41,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,339 INFO L225 Difference]: With dead ends: 667 [2020-10-19 18:23:41,339 INFO L226 Difference]: Without dead ends: 667 [2020-10-19 18:23:41,340 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 18:23:41,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-10-19 18:23:41,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 490. [2020-10-19 18:23:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-19 18:23:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 860 transitions. [2020-10-19 18:23:41,355 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 860 transitions. Word has length 29 [2020-10-19 18:23:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,356 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 860 transitions. [2020-10-19 18:23:41,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 860 transitions. [2020-10-19 18:23:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:41,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,358 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 18:23:41,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:23:41,359 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1800670182, now seen corresponding path program 1 times [2020-10-19 18:23:41,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398660801] [2020-10-19 18:23:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,423 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 18:23:41,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398660801] [2020-10-19 18:23:41,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:41,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391714639] [2020-10-19 18:23:41,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:41,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:41,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:41,426 INFO L87 Difference]: Start difference. First operand 490 states and 860 transitions. Second operand 4 states. [2020-10-19 18:23:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,589 INFO L93 Difference]: Finished difference Result 691 states and 1209 transitions. [2020-10-19 18:23:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:41,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,596 INFO L225 Difference]: With dead ends: 691 [2020-10-19 18:23:41,596 INFO L226 Difference]: Without dead ends: 691 [2020-10-19 18:23:41,598 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 18:23:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-19 18:23:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 690. [2020-10-19 18:23:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-19 18:23:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1208 transitions. [2020-10-19 18:23:41,620 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1208 transitions. Word has length 29 [2020-10-19 18:23:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,620 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1208 transitions. [2020-10-19 18:23:41,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:41,621 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1208 transitions. [2020-10-19 18:23:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:41,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,622 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 18:23:41,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:23:41,623 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1681743537, now seen corresponding path program 1 times [2020-10-19 18:23:41,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311641633] [2020-10-19 18:23:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,703 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 18:23:41,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311641633] [2020-10-19 18:23:41,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:41,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043097661] [2020-10-19 18:23:41,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:41,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:41,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:41,706 INFO L87 Difference]: Start difference. First operand 690 states and 1208 transitions. Second operand 4 states. [2020-10-19 18:23:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,898 INFO L93 Difference]: Finished difference Result 699 states and 1209 transitions. [2020-10-19 18:23:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:41,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,904 INFO L225 Difference]: With dead ends: 699 [2020-10-19 18:23:41,904 INFO L226 Difference]: Without dead ends: 699 [2020-10-19 18:23:41,905 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 18:23:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-10-19 18:23:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 698. [2020-10-19 18:23:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2020-10-19 18:23:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1208 transitions. [2020-10-19 18:23:41,923 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1208 transitions. Word has length 30 [2020-10-19 18:23:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,924 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 1208 transitions. [2020-10-19 18:23:41,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1208 transitions. [2020-10-19 18:23:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:41,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,927 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 18:23:41,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:23:41,929 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,929 INFO L82 PathProgramCache]: Analyzing trace with hash -7200205, now seen corresponding path program 1 times [2020-10-19 18:23:41,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584996212] [2020-10-19 18:23:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,987 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 18:23:41,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584996212] [2020-10-19 18:23:41,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:41,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622438485] [2020-10-19 18:23:41,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:41,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:41,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:41,991 INFO L87 Difference]: Start difference. First operand 698 states and 1208 transitions. Second operand 4 states. [2020-10-19 18:23:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,155 INFO L93 Difference]: Finished difference Result 1291 states and 2257 transitions. [2020-10-19 18:23:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:42,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:42,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,163 INFO L225 Difference]: With dead ends: 1291 [2020-10-19 18:23:42,163 INFO L226 Difference]: Without dead ends: 1291 [2020-10-19 18:23:42,164 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 18:23:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-10-19 18:23:42,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 970. [2020-10-19 18:23:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-19 18:23:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1648 transitions. [2020-10-19 18:23:42,192 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1648 transitions. Word has length 30 [2020-10-19 18:23:42,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:42,193 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1648 transitions. [2020-10-19 18:23:42,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1648 transitions. [2020-10-19 18:23:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:42,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:42,196 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 18:23:42,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:23:42,196 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:42,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2001344911, now seen corresponding path program 1 times [2020-10-19 18:23:42,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:42,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495560517] [2020-10-19 18:23:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,286 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 18:23:42,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495560517] [2020-10-19 18:23:42,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:42,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126183996] [2020-10-19 18:23:42,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:42,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:42,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:42,289 INFO L87 Difference]: Start difference. First operand 970 states and 1648 transitions. Second operand 4 states. [2020-10-19 18:23:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,449 INFO L93 Difference]: Finished difference Result 1355 states and 2297 transitions. [2020-10-19 18:23:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:42,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,457 INFO L225 Difference]: With dead ends: 1355 [2020-10-19 18:23:42,457 INFO L226 Difference]: Without dead ends: 1355 [2020-10-19 18:23:42,458 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 18:23:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-10-19 18:23:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1354. [2020-10-19 18:23:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1354 states. [2020-10-19 18:23:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 2296 transitions. [2020-10-19 18:23:42,493 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 2296 transitions. Word has length 30 [2020-10-19 18:23:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:42,493 INFO L481 AbstractCegarLoop]: Abstraction has 1354 states and 2296 transitions. [2020-10-19 18:23:42,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:42,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 2296 transitions. [2020-10-19 18:23:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:42,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:42,495 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 18:23:42,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:23:42,496 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:42,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:42,496 INFO L82 PathProgramCache]: Analyzing trace with hash -216596783, now seen corresponding path program 1 times [2020-10-19 18:23:42,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:42,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904558696] [2020-10-19 18:23:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,540 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 18:23:42,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904558696] [2020-10-19 18:23:42,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:42,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598259648] [2020-10-19 18:23:42,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:42,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:42,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:42,543 INFO L87 Difference]: Start difference. First operand 1354 states and 2296 transitions. Second operand 4 states. [2020-10-19 18:23:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,779 INFO L93 Difference]: Finished difference Result 1371 states and 2297 transitions. [2020-10-19 18:23:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:42,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,790 INFO L225 Difference]: With dead ends: 1371 [2020-10-19 18:23:42,791 INFO L226 Difference]: Without dead ends: 1371 [2020-10-19 18:23:42,791 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 18:23:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-10-19 18:23:42,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1370. [2020-10-19 18:23:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2020-10-19 18:23:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2296 transitions. [2020-10-19 18:23:42,843 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2296 transitions. Word has length 31 [2020-10-19 18:23:42,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:42,844 INFO L481 AbstractCegarLoop]: Abstraction has 1370 states and 2296 transitions. [2020-10-19 18:23:42,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2296 transitions. [2020-10-19 18:23:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:42,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:42,848 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 18:23:42,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:23:42,849 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:42,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1905540525, now seen corresponding path program 1 times [2020-10-19 18:23:42,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:42,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723468088] [2020-10-19 18:23:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,913 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 18:23:42,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723468088] [2020-10-19 18:23:42,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:42,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309366818] [2020-10-19 18:23:42,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:42,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:42,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:42,916 INFO L87 Difference]: Start difference. First operand 1370 states and 2296 transitions. Second operand 4 states. [2020-10-19 18:23:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:43,114 INFO L93 Difference]: Finished difference Result 2507 states and 4249 transitions. [2020-10-19 18:23:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:43,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:43,129 INFO L225 Difference]: With dead ends: 2507 [2020-10-19 18:23:43,130 INFO L226 Difference]: Without dead ends: 2507 [2020-10-19 18:23:43,130 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 18:23:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-10-19 18:23:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1930. [2020-10-19 18:23:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-19 18:23:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3160 transitions. [2020-10-19 18:23:43,202 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3160 transitions. Word has length 31 [2020-10-19 18:23:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:43,202 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 3160 transitions. [2020-10-19 18:23:43,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3160 transitions. [2020-10-19 18:23:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:43,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:43,206 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 18:23:43,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:23:43,207 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:43,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:43,207 INFO L82 PathProgramCache]: Analyzing trace with hash 395282065, now seen corresponding path program 1 times [2020-10-19 18:23:43,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:43,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803791804] [2020-10-19 18:23:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,251 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 18:23:43,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803791804] [2020-10-19 18:23:43,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:43,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:43,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617863410] [2020-10-19 18:23:43,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:43,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:43,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:43,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:43,255 INFO L87 Difference]: Start difference. First operand 1930 states and 3160 transitions. Second operand 4 states. [2020-10-19 18:23:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:43,450 INFO L93 Difference]: Finished difference Result 2667 states and 4361 transitions. [2020-10-19 18:23:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:43,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:43,467 INFO L225 Difference]: With dead ends: 2667 [2020-10-19 18:23:43,468 INFO L226 Difference]: Without dead ends: 2667 [2020-10-19 18:23:43,468 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 18:23:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2020-10-19 18:23:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2666. [2020-10-19 18:23:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2666 states. [2020-10-19 18:23:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 4360 transitions. [2020-10-19 18:23:43,561 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 4360 transitions. Word has length 31 [2020-10-19 18:23:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:43,562 INFO L481 AbstractCegarLoop]: Abstraction has 2666 states and 4360 transitions. [2020-10-19 18:23:43,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 4360 transitions. [2020-10-19 18:23:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 18:23:43,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:43,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:43,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:23:43,568 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:43,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1064406012, now seen corresponding path program 1 times [2020-10-19 18:23:43,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:43,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150758246] [2020-10-19 18:23:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:43,623 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 [1150758246] [2020-10-19 18:23:43,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:43,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:43,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559931965] [2020-10-19 18:23:43,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:43,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:43,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:43,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:43,630 INFO L87 Difference]: Start difference. First operand 2666 states and 4360 transitions. Second operand 4 states. [2020-10-19 18:23:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:43,833 INFO L93 Difference]: Finished difference Result 2699 states and 4361 transitions. [2020-10-19 18:23:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:43,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-19 18:23:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:43,846 INFO L225 Difference]: With dead ends: 2699 [2020-10-19 18:23:43,847 INFO L226 Difference]: Without dead ends: 2699 [2020-10-19 18:23:43,847 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 18:23:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2020-10-19 18:23:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2698. [2020-10-19 18:23:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2698 states. [2020-10-19 18:23:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4360 transitions. [2020-10-19 18:23:43,913 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4360 transitions. Word has length 32 [2020-10-19 18:23:43,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:43,913 INFO L481 AbstractCegarLoop]: Abstraction has 2698 states and 4360 transitions. [2020-10-19 18:23:43,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4360 transitions. [2020-10-19 18:23:43,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 18:23:43,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:43,917 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 18:23:43,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:23:43,918 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:43,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:43,918 INFO L82 PathProgramCache]: Analyzing trace with hash -624537730, now seen corresponding path program 1 times [2020-10-19 18:23:43,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:43,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78834119] [2020-10-19 18:23:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,982 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 18:23:43,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78834119] [2020-10-19 18:23:43,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:43,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:43,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995051786] [2020-10-19 18:23:43,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:43,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:43,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:43,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:43,985 INFO L87 Difference]: Start difference. First operand 2698 states and 4360 transitions. Second operand 4 states. [2020-10-19 18:23:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:44,151 INFO L93 Difference]: Finished difference Result 4875 states and 7977 transitions. [2020-10-19 18:23:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:44,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-19 18:23:44,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:44,175 INFO L225 Difference]: With dead ends: 4875 [2020-10-19 18:23:44,175 INFO L226 Difference]: Without dead ends: 4875 [2020-10-19 18:23:44,176 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 18:23:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2020-10-19 18:23:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 3850. [2020-10-19 18:23:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3850 states. [2020-10-19 18:23:44,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 6056 transitions. [2020-10-19 18:23:44,277 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 6056 transitions. Word has length 32 [2020-10-19 18:23:44,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:44,278 INFO L481 AbstractCegarLoop]: Abstraction has 3850 states and 6056 transitions. [2020-10-19 18:23:44,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 6056 transitions. [2020-10-19 18:23:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 18:23:44,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:44,285 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 18:23:44,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:23:44,285 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:44,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:44,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1676284860, now seen corresponding path program 1 times [2020-10-19 18:23:44,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:44,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122578803] [2020-10-19 18:23:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:44,337 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 18:23:44,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122578803] [2020-10-19 18:23:44,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:44,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:44,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271715073] [2020-10-19 18:23:44,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:44,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:44,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:44,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:44,339 INFO L87 Difference]: Start difference. First operand 3850 states and 6056 transitions. Second operand 4 states. [2020-10-19 18:23:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:44,492 INFO L93 Difference]: Finished difference Result 5259 states and 8265 transitions. [2020-10-19 18:23:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:44,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-19 18:23:44,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:44,528 INFO L225 Difference]: With dead ends: 5259 [2020-10-19 18:23:44,530 INFO L226 Difference]: Without dead ends: 5259 [2020-10-19 18:23:44,531 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 18:23:44,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2020-10-19 18:23:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 5258. [2020-10-19 18:23:44,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5258 states. [2020-10-19 18:23:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 8264 transitions. [2020-10-19 18:23:44,642 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 8264 transitions. Word has length 32 [2020-10-19 18:23:44,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:44,642 INFO L481 AbstractCegarLoop]: Abstraction has 5258 states and 8264 transitions. [2020-10-19 18:23:44,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 8264 transitions. [2020-10-19 18:23:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:23:44,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:44,649 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 18:23:44,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 18:23:44,649 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2120797564, now seen corresponding path program 1 times [2020-10-19 18:23:44,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:44,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750872633] [2020-10-19 18:23:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:44,702 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 18:23:44,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750872633] [2020-10-19 18:23:44,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:44,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:44,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835981478] [2020-10-19 18:23:44,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:44,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:44,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:44,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:44,705 INFO L87 Difference]: Start difference. First operand 5258 states and 8264 transitions. Second operand 4 states. [2020-10-19 18:23:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:44,899 INFO L93 Difference]: Finished difference Result 5323 states and 8265 transitions. [2020-10-19 18:23:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:44,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-19 18:23:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:44,920 INFO L225 Difference]: With dead ends: 5323 [2020-10-19 18:23:44,920 INFO L226 Difference]: Without dead ends: 5323 [2020-10-19 18:23:44,922 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 18:23:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-10-19 18:23:44,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5322. [2020-10-19 18:23:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5322 states. [2020-10-19 18:23:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 8264 transitions. [2020-10-19 18:23:45,011 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 8264 transitions. Word has length 33 [2020-10-19 18:23:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:45,011 INFO L481 AbstractCegarLoop]: Abstraction has 5322 states and 8264 transitions. [2020-10-19 18:23:45,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 8264 transitions. [2020-10-19 18:23:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:23:45,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:45,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:45,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 18:23:45,018 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:45,019 INFO L82 PathProgramCache]: Analyzing trace with hash 431853822, now seen corresponding path program 1 times [2020-10-19 18:23:45,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:45,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295816541] [2020-10-19 18:23:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,067 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 18:23:45,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295816541] [2020-10-19 18:23:45,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:45,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:45,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27982646] [2020-10-19 18:23:45,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:45,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:45,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:45,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:45,069 INFO L87 Difference]: Start difference. First operand 5322 states and 8264 transitions. Second operand 4 states. [2020-10-19 18:23:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:45,269 INFO L93 Difference]: Finished difference Result 9483 states and 14921 transitions. [2020-10-19 18:23:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:45,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-19 18:23:45,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:45,290 INFO L225 Difference]: With dead ends: 9483 [2020-10-19 18:23:45,290 INFO L226 Difference]: Without dead ends: 9483 [2020-10-19 18:23:45,291 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 18:23:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2020-10-19 18:23:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 7690. [2020-10-19 18:23:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7690 states. [2020-10-19 18:23:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7690 states to 7690 states and 11592 transitions. [2020-10-19 18:23:45,468 INFO L78 Accepts]: Start accepts. Automaton has 7690 states and 11592 transitions. Word has length 33 [2020-10-19 18:23:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:45,469 INFO L481 AbstractCegarLoop]: Abstraction has 7690 states and 11592 transitions. [2020-10-19 18:23:45,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7690 states and 11592 transitions. [2020-10-19 18:23:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:23:45,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:45,480 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 18:23:45,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 18:23:45,481 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:45,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1562290884, now seen corresponding path program 1 times [2020-10-19 18:23:45,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:45,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171810401] [2020-10-19 18:23:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:45,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171810401] [2020-10-19 18:23:45,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:45,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:45,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433761868] [2020-10-19 18:23:45,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:45,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:45,525 INFO L87 Difference]: Start difference. First operand 7690 states and 11592 transitions. Second operand 4 states. [2020-10-19 18:23:45,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:45,706 INFO L93 Difference]: Finished difference Result 10379 states and 15625 transitions. [2020-10-19 18:23:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:45,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-19 18:23:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:45,727 INFO L225 Difference]: With dead ends: 10379 [2020-10-19 18:23:45,728 INFO L226 Difference]: Without dead ends: 10379 [2020-10-19 18:23:45,728 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 18:23:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2020-10-19 18:23:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10378. [2020-10-19 18:23:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10378 states. [2020-10-19 18:23:45,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 15624 transitions. [2020-10-19 18:23:45,896 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 15624 transitions. Word has length 33 [2020-10-19 18:23:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:45,896 INFO L481 AbstractCegarLoop]: Abstraction has 10378 states and 15624 transitions. [2020-10-19 18:23:45,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:45,896 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 15624 transitions. [2020-10-19 18:23:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:23:45,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:45,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:45,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 18:23:45,910 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:45,911 INFO L82 PathProgramCache]: Analyzing trace with hash 509207879, now seen corresponding path program 1 times [2020-10-19 18:23:45,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:45,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140760501] [2020-10-19 18:23:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:45,955 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 18:23:45,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140760501] [2020-10-19 18:23:45,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:45,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:45,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370379743] [2020-10-19 18:23:45,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:45,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:45,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:45,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:45,958 INFO L87 Difference]: Start difference. First operand 10378 states and 15624 transitions. Second operand 4 states. [2020-10-19 18:23:46,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:46,137 INFO L93 Difference]: Finished difference Result 10507 states and 15625 transitions. [2020-10-19 18:23:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:46,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-19 18:23:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:46,159 INFO L225 Difference]: With dead ends: 10507 [2020-10-19 18:23:46,159 INFO L226 Difference]: Without dead ends: 10507 [2020-10-19 18:23:46,160 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 18:23:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10507 states. [2020-10-19 18:23:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10507 to 10506. [2020-10-19 18:23:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10506 states. [2020-10-19 18:23:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10506 states to 10506 states and 15624 transitions. [2020-10-19 18:23:46,317 INFO L78 Accepts]: Start accepts. Automaton has 10506 states and 15624 transitions. Word has length 34 [2020-10-19 18:23:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:46,317 INFO L481 AbstractCegarLoop]: Abstraction has 10506 states and 15624 transitions. [2020-10-19 18:23:46,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 10506 states and 15624 transitions. [2020-10-19 18:23:46,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:23:46,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:46,331 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 18:23:46,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 18:23:46,332 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:46,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1179735863, now seen corresponding path program 1 times [2020-10-19 18:23:46,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:46,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298538499] [2020-10-19 18:23:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:46,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:46,375 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 18:23:46,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298538499] [2020-10-19 18:23:46,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:46,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:46,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512086358] [2020-10-19 18:23:46,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:46,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:46,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:46,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:46,378 INFO L87 Difference]: Start difference. First operand 10506 states and 15624 transitions. Second operand 4 states. [2020-10-19 18:23:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:46,571 INFO L93 Difference]: Finished difference Result 18443 states and 27785 transitions. [2020-10-19 18:23:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:46,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-19 18:23:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:46,604 INFO L225 Difference]: With dead ends: 18443 [2020-10-19 18:23:46,605 INFO L226 Difference]: Without dead ends: 18443 [2020-10-19 18:23:46,605 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 18:23:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18443 states. [2020-10-19 18:23:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18443 to 15370. [2020-10-19 18:23:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15370 states. [2020-10-19 18:23:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15370 states to 15370 states and 22152 transitions. [2020-10-19 18:23:46,944 INFO L78 Accepts]: Start accepts. Automaton has 15370 states and 22152 transitions. Word has length 34 [2020-10-19 18:23:46,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:46,945 INFO L481 AbstractCegarLoop]: Abstraction has 15370 states and 22152 transitions. [2020-10-19 18:23:46,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 15370 states and 22152 transitions. [2020-10-19 18:23:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:23:46,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:46,966 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 18:23:46,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 18:23:46,966 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:46,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:46,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1121086727, now seen corresponding path program 1 times [2020-10-19 18:23:46,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:46,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921282361] [2020-10-19 18:23:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:47,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:47,035 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 18:23:47,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921282361] [2020-10-19 18:23:47,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:47,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:47,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510948824] [2020-10-19 18:23:47,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:47,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:47,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:47,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:47,039 INFO L87 Difference]: Start difference. First operand 15370 states and 22152 transitions. Second operand 4 states. [2020-10-19 18:23:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:47,246 INFO L93 Difference]: Finished difference Result 20491 states and 29449 transitions. [2020-10-19 18:23:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:47,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-19 18:23:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:47,283 INFO L225 Difference]: With dead ends: 20491 [2020-10-19 18:23:47,283 INFO L226 Difference]: Without dead ends: 20491 [2020-10-19 18:23:47,284 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 18:23:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20491 states. [2020-10-19 18:23:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20491 to 20490. [2020-10-19 18:23:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20490 states. [2020-10-19 18:23:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20490 states to 20490 states and 29448 transitions. [2020-10-19 18:23:47,545 INFO L78 Accepts]: Start accepts. Automaton has 20490 states and 29448 transitions. Word has length 34 [2020-10-19 18:23:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:47,546 INFO L481 AbstractCegarLoop]: Abstraction has 20490 states and 29448 transitions. [2020-10-19 18:23:47,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 20490 states and 29448 transitions. [2020-10-19 18:23:47,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:23:47,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:47,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:47,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 18:23:47,567 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:47,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:47,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2089545767, now seen corresponding path program 1 times [2020-10-19 18:23:47,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:47,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414499311] [2020-10-19 18:23:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:47,612 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 18:23:47,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414499311] [2020-10-19 18:23:47,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:47,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:47,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908291835] [2020-10-19 18:23:47,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:47,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:47,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:47,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:47,614 INFO L87 Difference]: Start difference. First operand 20490 states and 29448 transitions. Second operand 4 states. [2020-10-19 18:23:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:47,816 INFO L93 Difference]: Finished difference Result 20747 states and 29449 transitions. [2020-10-19 18:23:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:47,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 18:23:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:47,853 INFO L225 Difference]: With dead ends: 20747 [2020-10-19 18:23:47,853 INFO L226 Difference]: Without dead ends: 20747 [2020-10-19 18:23:47,854 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 18:23:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20747 states. [2020-10-19 18:23:48,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20747 to 20746. [2020-10-19 18:23:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20746 states. [2020-10-19 18:23:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20746 states to 20746 states and 29448 transitions. [2020-10-19 18:23:48,117 INFO L78 Accepts]: Start accepts. Automaton has 20746 states and 29448 transitions. Word has length 35 [2020-10-19 18:23:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:48,117 INFO L481 AbstractCegarLoop]: Abstraction has 20746 states and 29448 transitions. [2020-10-19 18:23:48,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 20746 states and 29448 transitions. [2020-10-19 18:23:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:23:48,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:48,150 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 18:23:48,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 18:23:48,150 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:48,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:48,150 INFO L82 PathProgramCache]: Analyzing trace with hash 400602025, now seen corresponding path program 1 times [2020-10-19 18:23:48,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:48,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425040300] [2020-10-19 18:23:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:48,197 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 18:23:48,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425040300] [2020-10-19 18:23:48,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:48,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:48,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593268723] [2020-10-19 18:23:48,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:48,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:48,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:48,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:48,199 INFO L87 Difference]: Start difference. First operand 20746 states and 29448 transitions. Second operand 4 states. [2020-10-19 18:23:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:48,468 INFO L93 Difference]: Finished difference Result 40459 states and 55817 transitions. [2020-10-19 18:23:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:48,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 18:23:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:48,522 INFO L225 Difference]: With dead ends: 40459 [2020-10-19 18:23:48,522 INFO L226 Difference]: Without dead ends: 40459 [2020-10-19 18:23:48,523 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 18:23:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40459 states. [2020-10-19 18:23:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40459 to 40458. [2020-10-19 18:23:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40458 states. [2020-10-19 18:23:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40458 states to 40458 states and 55816 transitions. [2020-10-19 18:23:49,187 INFO L78 Accepts]: Start accepts. Automaton has 40458 states and 55816 transitions. Word has length 35 [2020-10-19 18:23:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:49,187 INFO L481 AbstractCegarLoop]: Abstraction has 40458 states and 55816 transitions. [2020-10-19 18:23:49,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 40458 states and 55816 transitions. [2020-10-19 18:23:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:23:49,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:49,214 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 18:23:49,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 18:23:49,214 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:49,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:49,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1900220565, now seen corresponding path program 1 times [2020-10-19 18:23:49,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:49,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235611387] [2020-10-19 18:23:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:49,259 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 18:23:49,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235611387] [2020-10-19 18:23:49,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:49,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:49,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640011943] [2020-10-19 18:23:49,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:49,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:49,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:49,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:49,264 INFO L87 Difference]: Start difference. First operand 40458 states and 55816 transitions. Second operand 4 states. [2020-10-19 18:23:49,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:49,492 INFO L93 Difference]: Finished difference Result 45579 states and 64521 transitions. [2020-10-19 18:23:49,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:49,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 18:23:49,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:49,547 INFO L225 Difference]: With dead ends: 45579 [2020-10-19 18:23:49,548 INFO L226 Difference]: Without dead ends: 45579 [2020-10-19 18:23:49,548 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 18:23:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45579 states. [2020-10-19 18:23:50,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45579 to 40458. [2020-10-19 18:23:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40458 states. [2020-10-19 18:23:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40458 states to 40458 states and 55304 transitions. [2020-10-19 18:23:50,649 INFO L78 Accepts]: Start accepts. Automaton has 40458 states and 55304 transitions. Word has length 35 [2020-10-19 18:23:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:50,650 INFO L481 AbstractCegarLoop]: Abstraction has 40458 states and 55304 transitions. [2020-10-19 18:23:50,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 40458 states and 55304 transitions. [2020-10-19 18:23:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:23:50,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:50,667 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 18:23:50,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 18:23:50,667 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:50,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:50,668 INFO L82 PathProgramCache]: Analyzing trace with hash -459576686, now seen corresponding path program 1 times [2020-10-19 18:23:50,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:50,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785626854] [2020-10-19 18:23:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:50,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785626854] [2020-10-19 18:23:50,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:50,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:50,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87663295] [2020-10-19 18:23:50,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:50,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:50,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:50,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:50,715 INFO L87 Difference]: Start difference. First operand 40458 states and 55304 transitions. Second operand 4 states. [2020-10-19 18:23:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:51,061 INFO L93 Difference]: Finished difference Result 69131 states and 95241 transitions. [2020-10-19 18:23:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:51,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-19 18:23:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:51,160 INFO L225 Difference]: With dead ends: 69131 [2020-10-19 18:23:51,160 INFO L226 Difference]: Without dead ends: 69131 [2020-10-19 18:23:51,162 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 18:23:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69131 states. [2020-10-19 18:23:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69131 to 60938. [2020-10-19 18:23:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60938 states. [2020-10-19 18:23:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60938 states to 60938 states and 80904 transitions. [2020-10-19 18:23:51,912 INFO L78 Accepts]: Start accepts. Automaton has 60938 states and 80904 transitions. Word has length 36 [2020-10-19 18:23:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:51,912 INFO L481 AbstractCegarLoop]: Abstraction has 60938 states and 80904 transitions. [2020-10-19 18:23:51,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 60938 states and 80904 transitions. [2020-10-19 18:23:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:23:51,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:51,966 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 18:23:51,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 18:23:51,967 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:51,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1841245904, now seen corresponding path program 1 times [2020-10-19 18:23:51,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:51,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369032415] [2020-10-19 18:23:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:52,013 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 18:23:52,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369032415] [2020-10-19 18:23:52,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:52,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:52,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501271694] [2020-10-19 18:23:52,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:52,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:52,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:52,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:52,015 INFO L87 Difference]: Start difference. First operand 60938 states and 80904 transitions. Second operand 4 states. [2020-10-19 18:23:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:52,445 INFO L93 Difference]: Finished difference Result 79371 states and 104457 transitions. [2020-10-19 18:23:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:52,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-19 18:23:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:52,551 INFO L225 Difference]: With dead ends: 79371 [2020-10-19 18:23:52,551 INFO L226 Difference]: Without dead ends: 79371 [2020-10-19 18:23:52,551 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 18:23:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79371 states. [2020-10-19 18:23:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79371 to 79370. [2020-10-19 18:23:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79370 states. [2020-10-19 18:23:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79370 states to 79370 states and 104456 transitions. [2020-10-19 18:23:54,004 INFO L78 Accepts]: Start accepts. Automaton has 79370 states and 104456 transitions. Word has length 36 [2020-10-19 18:23:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:54,005 INFO L481 AbstractCegarLoop]: Abstraction has 79370 states and 104456 transitions. [2020-10-19 18:23:54,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand 79370 states and 104456 transitions. [2020-10-19 18:23:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:23:54,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:54,034 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 18:23:54,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 18:23:54,035 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:54,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1355302380, now seen corresponding path program 1 times [2020-10-19 18:23:54,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:54,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847438814] [2020-10-19 18:23:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:54,086 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 18:23:54,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847438814] [2020-10-19 18:23:54,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:54,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:54,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817643867] [2020-10-19 18:23:54,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:54,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:54,087 INFO L87 Difference]: Start difference. First operand 79370 states and 104456 transitions. Second operand 4 states. [2020-10-19 18:23:54,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:54,418 INFO L93 Difference]: Finished difference Result 80907 states and 105481 transitions. [2020-10-19 18:23:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:54,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-19 18:23:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:54,483 INFO L225 Difference]: With dead ends: 80907 [2020-10-19 18:23:54,483 INFO L226 Difference]: Without dead ends: 80907 [2020-10-19 18:23:54,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:54,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80907 states. [2020-10-19 18:23:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80907 to 80906. [2020-10-19 18:23:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80906 states. [2020-10-19 18:23:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80906 states to 80906 states and 105480 transitions. [2020-10-19 18:23:55,863 INFO L78 Accepts]: Start accepts. Automaton has 80906 states and 105480 transitions. Word has length 37 [2020-10-19 18:23:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:55,863 INFO L481 AbstractCegarLoop]: Abstraction has 80906 states and 105480 transitions. [2020-10-19 18:23:55,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 80906 states and 105480 transitions. [2020-10-19 18:23:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:23:55,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:55,898 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 18:23:55,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 18:23:55,898 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:55,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:55,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1250721174, now seen corresponding path program 1 times [2020-10-19 18:23:55,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:55,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995863730] [2020-10-19 18:23:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:55,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:55,942 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 18:23:55,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995863730] [2020-10-19 18:23:55,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:55,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:55,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281278856] [2020-10-19 18:23:55,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:55,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:55,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:55,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:55,944 INFO L87 Difference]: Start difference. First operand 80906 states and 105480 transitions. Second operand 4 states. [2020-10-19 18:23:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:56,373 INFO L93 Difference]: Finished difference Result 135179 states and 176137 transitions. [2020-10-19 18:23:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:56,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-19 18:23:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:56,516 INFO L225 Difference]: With dead ends: 135179 [2020-10-19 18:23:56,516 INFO L226 Difference]: Without dead ends: 135179 [2020-10-19 18:23:56,516 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 18:23:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135179 states. [2020-10-19 18:23:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135179 to 122890. [2020-10-19 18:23:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122890 states. [2020-10-19 18:23:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122890 states to 122890 states and 155656 transitions. [2020-10-19 18:23:58,507 INFO L78 Accepts]: Start accepts. Automaton has 122890 states and 155656 transitions. Word has length 37 [2020-10-19 18:23:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:58,508 INFO L481 AbstractCegarLoop]: Abstraction has 122890 states and 155656 transitions. [2020-10-19 18:23:58,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 122890 states and 155656 transitions. [2020-10-19 18:23:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:23:58,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:58,569 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 18:23:58,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-19 18:23:58,569 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash -743423532, now seen corresponding path program 1 times [2020-10-19 18:23:58,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:58,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000574958] [2020-10-19 18:23:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:58,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:58,611 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 18:23:58,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000574958] [2020-10-19 18:23:58,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:58,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:58,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529773832] [2020-10-19 18:23:58,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:58,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:58,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:58,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:58,613 INFO L87 Difference]: Start difference. First operand 122890 states and 155656 transitions. Second operand 4 states. [2020-10-19 18:23:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:59,102 INFO L93 Difference]: Finished difference Result 157707 states and 196617 transitions. [2020-10-19 18:23:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:59,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-19 18:23:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:59,264 INFO L225 Difference]: With dead ends: 157707 [2020-10-19 18:23:59,264 INFO L226 Difference]: Without dead ends: 157707 [2020-10-19 18:23:59,265 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 18:23:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157707 states. [2020-10-19 18:24:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157707 to 157706. [2020-10-19 18:24:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157706 states. [2020-10-19 18:24:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157706 states to 157706 states and 196616 transitions. [2020-10-19 18:24:03,702 INFO L78 Accepts]: Start accepts. Automaton has 157706 states and 196616 transitions. Word has length 37 [2020-10-19 18:24:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:03,702 INFO L481 AbstractCegarLoop]: Abstraction has 157706 states and 196616 transitions. [2020-10-19 18:24:03,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 157706 states and 196616 transitions. [2020-10-19 18:24:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:24:03,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:03,769 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, 1] [2020-10-19 18:24:03,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-19 18:24:03,770 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:24:03,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:03,770 INFO L82 PathProgramCache]: Analyzing trace with hash 124334299, now seen corresponding path program 1 times [2020-10-19 18:24:03,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:03,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809895472] [2020-10-19 18:24:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:03,808 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 18:24:03,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809895472] [2020-10-19 18:24:03,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:03,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:24:03,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972127915] [2020-10-19 18:24:03,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:03,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:03,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:03,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:03,810 INFO L87 Difference]: Start difference. First operand 157706 states and 196616 transitions. Second operand 4 states. [2020-10-19 18:24:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:04,295 INFO L93 Difference]: Finished difference Result 159755 states and 196617 transitions. [2020-10-19 18:24:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:24:04,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-19 18:24:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:04,444 INFO L225 Difference]: With dead ends: 159755 [2020-10-19 18:24:04,445 INFO L226 Difference]: Without dead ends: 159755 [2020-10-19 18:24:04,445 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 18:24:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159755 states. [2020-10-19 18:24:06,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159755 to 159754. [2020-10-19 18:24:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159754 states. [2020-10-19 18:24:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159754 states to 159754 states and 196616 transitions. [2020-10-19 18:24:06,757 INFO L78 Accepts]: Start accepts. Automaton has 159754 states and 196616 transitions. Word has length 38 [2020-10-19 18:24:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:06,757 INFO L481 AbstractCegarLoop]: Abstraction has 159754 states and 196616 transitions. [2020-10-19 18:24:06,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 159754 states and 196616 transitions. [2020-10-19 18:24:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:24:06,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:06,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:06,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-19 18:24:06,826 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:24:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1564609443, now seen corresponding path program 1 times [2020-10-19 18:24:06,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:06,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204729533] [2020-10-19 18:24:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:06,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:06,862 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 18:24:06,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204729533] [2020-10-19 18:24:06,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:06,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:24:06,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652947015] [2020-10-19 18:24:06,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:06,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:06,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:06,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:06,864 INFO L87 Difference]: Start difference. First operand 159754 states and 196616 transitions. Second operand 4 states. [2020-10-19 18:24:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:07,792 INFO L93 Difference]: Finished difference Result 262155 states and 319497 transitions. [2020-10-19 18:24:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:24:07,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-19 18:24:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:08,186 INFO L225 Difference]: With dead ends: 262155 [2020-10-19 18:24:08,187 INFO L226 Difference]: Without dead ends: 262155 [2020-10-19 18:24:08,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:24:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262155 states. [2020-10-19 18:24:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262155 to 245770. [2020-10-19 18:24:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245770 states. [2020-10-19 18:24:11,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245770 states to 245770 states and 294920 transitions. [2020-10-19 18:24:11,246 INFO L78 Accepts]: Start accepts. Automaton has 245770 states and 294920 transitions. Word has length 38 [2020-10-19 18:24:11,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:11,246 INFO L481 AbstractCegarLoop]: Abstraction has 245770 states and 294920 transitions. [2020-10-19 18:24:11,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 245770 states and 294920 transitions. [2020-10-19 18:24:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:24:11,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:11,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:11,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-19 18:24:11,386 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:24:11,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:11,387 INFO L82 PathProgramCache]: Analyzing trace with hash 736213147, now seen corresponding path program 1 times [2020-10-19 18:24:11,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:11,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804649452] [2020-10-19 18:24:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:11,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:11,438 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 18:24:11,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804649452] [2020-10-19 18:24:11,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:11,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:24:11,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063782293] [2020-10-19 18:24:11,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:11,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:11,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:11,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:11,441 INFO L87 Difference]: Start difference. First operand 245770 states and 294920 transitions. Second operand 4 states. [2020-10-19 18:24:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:12,410 INFO L93 Difference]: Finished difference Result 311307 states and 364553 transitions. [2020-10-19 18:24:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:24:12,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-19 18:24:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:12,830 INFO L225 Difference]: With dead ends: 311307 [2020-10-19 18:24:12,830 INFO L226 Difference]: Without dead ends: 311307 [2020-10-19 18:24:12,831 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 18:24:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311307 states. [2020-10-19 18:24:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311307 to 311306. [2020-10-19 18:24:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311306 states. [2020-10-19 18:24:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311306 states to 311306 states and 364552 transitions. [2020-10-19 18:24:16,669 INFO L78 Accepts]: Start accepts. Automaton has 311306 states and 364552 transitions. Word has length 38 [2020-10-19 18:24:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:16,669 INFO L481 AbstractCegarLoop]: Abstraction has 311306 states and 364552 transitions. [2020-10-19 18:24:16,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 311306 states and 364552 transitions. [2020-10-19 18:24:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-19 18:24:16,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:16,836 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, 1, 1] [2020-10-19 18:24:16,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-19 18:24:16,836 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:24:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1251558337, now seen corresponding path program 1 times [2020-10-19 18:24:16,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:16,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369666926] [2020-10-19 18:24:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:16,881 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 18:24:16,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369666926] [2020-10-19 18:24:16,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:16,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:24:16,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170680785] [2020-10-19 18:24:16,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:16,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:16,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:16,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:16,883 INFO L87 Difference]: Start difference. First operand 311306 states and 364552 transitions. Second operand 4 states. [2020-10-19 18:24:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:17,647 INFO L93 Difference]: Finished difference Result 315403 states and 364553 transitions. [2020-10-19 18:24:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:24:17,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-19 18:24:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:17,947 INFO L225 Difference]: With dead ends: 315403 [2020-10-19 18:24:17,948 INFO L226 Difference]: Without dead ends: 315403 [2020-10-19 18:24:17,948 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 18:24:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315403 states. [2020-10-19 18:24:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315403 to 315402. [2020-10-19 18:24:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315402 states. [2020-10-19 18:24:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315402 states to 315402 states and 364552 transitions. [2020-10-19 18:24:21,686 INFO L78 Accepts]: Start accepts. Automaton has 315402 states and 364552 transitions. Word has length 39 [2020-10-19 18:24:21,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:21,687 INFO L481 AbstractCegarLoop]: Abstraction has 315402 states and 364552 transitions. [2020-10-19 18:24:21,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 315402 states and 364552 transitions. [2020-10-19 18:24:21,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-19 18:24:21,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:21,858 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, 1, 1] [2020-10-19 18:24:21,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-19 18:24:21,858 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:24:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:21,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1354465217, now seen corresponding path program 1 times [2020-10-19 18:24:21,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:21,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819733195] [2020-10-19 18:24:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:21,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:21,894 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 18:24:21,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819733195] [2020-10-19 18:24:21,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:21,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:24:21,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169114343] [2020-10-19 18:24:21,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:21,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:21,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:21,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:21,897 INFO L87 Difference]: Start difference. First operand 315402 states and 364552 transitions. Second operand 4 states. [2020-10-19 18:24:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:22,808 INFO L93 Difference]: Finished difference Result 507914 states and 573448 transitions. [2020-10-19 18:24:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:24:22,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-19 18:24:22,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:23,360 INFO L225 Difference]: With dead ends: 507914 [2020-10-19 18:24:23,361 INFO L226 Difference]: Without dead ends: 507914 [2020-10-19 18:24:23,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:24:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507914 states. [2020-10-19 18:24:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507914 to 491530. [2020-10-19 18:24:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491530 states. [2020-10-19 18:24:37,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491530 states to 491530 states and 557064 transitions. [2020-10-19 18:24:37,676 INFO L78 Accepts]: Start accepts. Automaton has 491530 states and 557064 transitions. Word has length 39 [2020-10-19 18:24:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:37,677 INFO L481 AbstractCegarLoop]: Abstraction has 491530 states and 557064 transitions. [2020-10-19 18:24:37,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 491530 states and 557064 transitions. [2020-10-19 18:24:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-19 18:24:37,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:37,966 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, 1, 1] [2020-10-19 18:24:37,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-19 18:24:37,966 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:24:37,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:37,966 INFO L82 PathProgramCache]: Analyzing trace with hash -639679489, now seen corresponding path program 1 times [2020-10-19 18:24:37,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:24:37,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002717414] [2020-10-19 18:24:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:24:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:37,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:24:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:37,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002717414] [2020-10-19 18:24:37,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:37,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:24:37,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375616377] [2020-10-19 18:24:37,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:24:37,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:24:37,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:24:38,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:24:38,000 INFO L87 Difference]: Start difference. First operand 491530 states and 557064 transitions. Second operand 4 states. [2020-10-19 18:24:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:39,364 INFO L93 Difference]: Finished difference Result 614407 states and 671750 transitions. [2020-10-19 18:24:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:24:39,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-19 18:24:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:39,365 INFO L225 Difference]: With dead ends: 614407 [2020-10-19 18:24:39,365 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:24:39,365 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 18:24:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:24:39,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:24:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:24:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:24:39,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-10-19 18:24:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:39,366 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:24:39,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:24:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:24:39,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:24:39,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-19 18:24:39,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:24:39 BoogieIcfgContainer [2020-10-19 18:24:39,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:24:39,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:24:39,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:24:39,372 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:24:39,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:37" (3/4) ... [2020-10-19 18:24:39,377 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:24:39,385 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-19 18:24:39,385 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:24:39,385 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:24:39,393 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-19 18:24:39,394 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 18:24:39,395 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:24:39,395 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:24:39,460 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:24:39,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:24:39,463 INFO L168 Benchmark]: Toolchain (without parser) took 62765.89 ms. Allocated memory was 1.0 GB in the beginning and 6.0 GB in the end (delta: 5.0 GB). Free memory was 958.6 MB in the beginning and 3.4 GB in the end (delta: -2.4 GB). Peak memory consumption was 2.6 GB. Max. memory is 11.5 GB. [2020-10-19 18:24:39,464 INFO L168 Benchmark]: CDTParser took 0.35 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 18:24:39,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -115.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:39,465 INFO L168 Benchmark]: Boogie Preprocessor took 43.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:39,465 INFO L168 Benchmark]: RCFGBuilder took 597.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:39,466 INFO L168 Benchmark]: TraceAbstraction took 61555.32 ms. Allocated memory was 1.1 GB in the beginning and 6.0 GB in the end (delta: 4.9 GB). Free memory was 1.0 GB in the beginning and 3.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 11.5 GB. [2020-10-19 18:24:39,466 INFO L168 Benchmark]: Witness Printer took 89.07 ms. Allocated memory is still 6.0 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:39,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 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 469.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -115.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 597.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 61555.32 ms. Allocated memory was 1.1 GB in the beginning and 6.0 GB in the end (delta: 4.9 GB). Free memory was 1.0 GB in the beginning and 3.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 11.5 GB. * Witness Printer took 89.07 ms. Allocated memory is still 6.0 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 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, 62 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 61.4s, OverallIterations: 40, TraceHistogramMax: 1, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4664 SDtfs, 6949 SDslu, 301 SDs, 0 SdLazy, 3277 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491530occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 41.2s AutomataMinimizationTime, 40 MinimizatonAttempts, 65541 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1284 NumberOfCodeBlocks, 1284 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1244 ConstructedInterpolants, 0 QuantifiedInterpolants, 117608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 40 InterpolantComputations, 40 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...