./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_13.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:16:22,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:16:22,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:16:22,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:16:22,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:16:22,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:16:22,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:16:22,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:16:22,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:16:22,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:16:22,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:16:22,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:16:22,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:16:22,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:16:22,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:16:22,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:16:22,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:16:22,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:16:22,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:16:22,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:16:22,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:16:22,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:16:22,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:16:22,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:16:22,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:16:22,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:16:22,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:16:22,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:16:22,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:16:22,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:16:22,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:16:22,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:16:22,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:16:22,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:16:22,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:16:22,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:16:22,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:16:22,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:16:22,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:16:22,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:16:22,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:16:22,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:16:22,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:16:22,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:16:22,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:16:22,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:16:22,672 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:16:22,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:16:22,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:16:22,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:16:22,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:16:22,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:16:22,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:16:22,675 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:16:22,675 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:16:22,675 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:16:22,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:16:22,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:16:22,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:16:22,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:16:22,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:16:22,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:16:22,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:16:22,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:16:22,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:16:22,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:16:22,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:16:22,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:16:22,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:16:22,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:16:22,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 837e2aefd0844822f4a3cad7b5ee89b7191bc2c1 [2020-10-20 06:16:22,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:16:22,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:16:22,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:16:22,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:16:22,888 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:16:22,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_13.c [2020-10-20 06:16:22,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b299bfc/88f8fb5945d14e8cbc86444040802b74/FLAG6f8188ae9 [2020-10-20 06:16:23,467 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:16:23,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c [2020-10-20 06:16:23,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b299bfc/88f8fb5945d14e8cbc86444040802b74/FLAG6f8188ae9 [2020-10-20 06:16:23,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b299bfc/88f8fb5945d14e8cbc86444040802b74 [2020-10-20 06:16:23,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:16:23,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:16:23,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:23,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:16:23,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:16:23,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:23" (1/1) ... [2020-10-20 06:16:23,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540fba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:23, skipping insertion in model container [2020-10-20 06:16:23,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:23" (1/1) ... [2020-10-20 06:16:23,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:16:23,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:16:24,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:24,137 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:16:24,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:24,195 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:16:24,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24 WrapperNode [2020-10-20 06:16:24,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:24,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:16:24,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:16:24,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:16:24,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (1/1) ... [2020-10-20 06:16:24,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (1/1) ... [2020-10-20 06:16:24,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (1/1) ... [2020-10-20 06:16:24,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (1/1) ... [2020-10-20 06:16:24,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (1/1) ... [2020-10-20 06:16:24,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (1/1) ... [2020-10-20 06:16:24,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (1/1) ... [2020-10-20 06:16:24,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:16:24,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:16:24,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:16:24,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:16:24,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (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 [2020-10-20 06:16:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:16:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:16:24,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:16:24,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:16:24,297 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:16:24,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:16:24,298 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:16:24,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:16:24,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:16:24,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:16:24,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:16:24,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:16:24,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:16:24,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:16:24,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:16:24,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:16:24,702 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:16:24,702 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 06:16:24,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:24 BoogieIcfgContainer [2020-10-20 06:16:24,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:16:24,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:16:24,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:16:24,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:16:24,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:16:23" (1/3) ... [2020-10-20 06:16:24,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2c78ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:24, skipping insertion in model container [2020-10-20 06:16:24,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:24" (2/3) ... [2020-10-20 06:16:24,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2c78ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:24, skipping insertion in model container [2020-10-20 06:16:24,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:24" (3/3) ... [2020-10-20 06:16:24,713 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2020-10-20 06:16:24,725 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:16:24,732 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 06:16:24,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 06:16:24,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:16:24,763 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:16:24,763 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:16:24,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:16:24,763 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:16:24,764 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:16:24,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:16:24,764 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:16:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-20 06:16:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:16:24,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:24,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:24,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:24,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:24,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1331697042, now seen corresponding path program 1 times [2020-10-20 06:16:24,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:24,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301425990] [2020-10-20 06:16:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:25,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301425990] [2020-10-20 06:16:25,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:25,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:16:25,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334746883] [2020-10-20 06:16:25,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:16:25,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:25,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:16:25,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:25,070 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-10-20 06:16:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:25,121 INFO L93 Difference]: Finished difference Result 55 states and 93 transitions. [2020-10-20 06:16:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:16:25,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:16:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:25,135 INFO L225 Difference]: With dead ends: 55 [2020-10-20 06:16:25,135 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 06:16:25,137 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 [2020-10-20 06:16:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 06:16:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-20 06:16:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 06:16:25,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 88 transitions. [2020-10-20 06:16:25,178 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 88 transitions. Word has length 9 [2020-10-20 06:16:25,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:25,179 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 88 transitions. [2020-10-20 06:16:25,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:16:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 88 transitions. [2020-10-20 06:16:25,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:16:25,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:25,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:25,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:16:25,182 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:25,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1784430188, now seen corresponding path program 1 times [2020-10-20 06:16:25,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:25,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507105719] [2020-10-20 06:16:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:25,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507105719] [2020-10-20 06:16:25,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:25,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:25,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16075360] [2020-10-20 06:16:25,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:25,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:25,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:25,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:25,363 INFO L87 Difference]: Start difference. First operand 50 states and 88 transitions. Second operand 4 states. [2020-10-20 06:16:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:25,617 INFO L93 Difference]: Finished difference Result 91 states and 166 transitions. [2020-10-20 06:16:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:25,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-20 06:16:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:25,620 INFO L225 Difference]: With dead ends: 91 [2020-10-20 06:16:25,620 INFO L226 Difference]: Without dead ends: 91 [2020-10-20 06:16:25,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-20 06:16:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2020-10-20 06:16:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-20 06:16:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 115 transitions. [2020-10-20 06:16:25,633 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 115 transitions. Word has length 25 [2020-10-20 06:16:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:25,634 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 115 transitions. [2020-10-20 06:16:25,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 115 transitions. [2020-10-20 06:16:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:16:25,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:25,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:25,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:16:25,636 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:25,636 INFO L82 PathProgramCache]: Analyzing trace with hash 196082286, now seen corresponding path program 1 times [2020-10-20 06:16:25,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:25,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965443326] [2020-10-20 06:16:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:25,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965443326] [2020-10-20 06:16:25,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:25,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:25,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54329373] [2020-10-20 06:16:25,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:25,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:25,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:25,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:25,746 INFO L87 Difference]: Start difference. First operand 64 states and 115 transitions. Second operand 4 states. [2020-10-20 06:16:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:25,946 INFO L93 Difference]: Finished difference Result 91 states and 164 transitions. [2020-10-20 06:16:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:25,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-20 06:16:25,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:25,948 INFO L225 Difference]: With dead ends: 91 [2020-10-20 06:16:25,948 INFO L226 Difference]: Without dead ends: 91 [2020-10-20 06:16:25,949 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 [2020-10-20 06:16:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-20 06:16:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-20 06:16:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-20 06:16:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 163 transitions. [2020-10-20 06:16:25,961 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 163 transitions. Word has length 25 [2020-10-20 06:16:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:25,962 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 163 transitions. [2020-10-20 06:16:25,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 163 transitions. [2020-10-20 06:16:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:16:25,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:25,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:25,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:16:25,965 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:25,965 INFO L82 PathProgramCache]: Analyzing trace with hash -510661688, now seen corresponding path program 1 times [2020-10-20 06:16:25,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:25,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513188598] [2020-10-20 06:16:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:26,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513188598] [2020-10-20 06:16:26,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:26,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:26,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155997445] [2020-10-20 06:16:26,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:26,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:26,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:26,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:26,061 INFO L87 Difference]: Start difference. First operand 90 states and 163 transitions. Second operand 4 states. [2020-10-20 06:16:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:26,250 INFO L93 Difference]: Finished difference Result 94 states and 166 transitions. [2020-10-20 06:16:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:26,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-20 06:16:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:26,253 INFO L225 Difference]: With dead ends: 94 [2020-10-20 06:16:26,253 INFO L226 Difference]: Without dead ends: 94 [2020-10-20 06:16:26,253 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 [2020-10-20 06:16:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-20 06:16:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-20 06:16:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 06:16:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2020-10-20 06:16:26,263 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 26 [2020-10-20 06:16:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:26,264 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2020-10-20 06:16:26,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2020-10-20 06:16:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:16:26,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:26,266 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] [2020-10-20 06:16:26,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:16:26,267 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:26,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1790160902, now seen corresponding path program 1 times [2020-10-20 06:16:26,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:26,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196006890] [2020-10-20 06:16:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:26,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196006890] [2020-10-20 06:16:26,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:26,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:26,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214072734] [2020-10-20 06:16:26,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:26,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:26,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:26,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:26,338 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand 4 states. [2020-10-20 06:16:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:26,522 INFO L93 Difference]: Finished difference Result 173 states and 311 transitions. [2020-10-20 06:16:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:26,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-20 06:16:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:26,525 INFO L225 Difference]: With dead ends: 173 [2020-10-20 06:16:26,539 INFO L226 Difference]: Without dead ends: 173 [2020-10-20 06:16:26,540 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 [2020-10-20 06:16:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-20 06:16:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-10-20 06:16:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-20 06:16:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 310 transitions. [2020-10-20 06:16:26,552 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 310 transitions. Word has length 26 [2020-10-20 06:16:26,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:26,553 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 310 transitions. [2020-10-20 06:16:26,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 310 transitions. [2020-10-20 06:16:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:16:26,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:26,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:26,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:16:26,555 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:26,556 INFO L82 PathProgramCache]: Analyzing trace with hash -916458492, now seen corresponding path program 1 times [2020-10-20 06:16:26,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:26,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102087300] [2020-10-20 06:16:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:26,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102087300] [2020-10-20 06:16:26,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:26,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:26,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586718255] [2020-10-20 06:16:26,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:26,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:26,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:26,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:26,648 INFO L87 Difference]: Start difference. First operand 172 states and 310 transitions. Second operand 4 states. [2020-10-20 06:16:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:26,833 INFO L93 Difference]: Finished difference Result 221 states and 401 transitions. [2020-10-20 06:16:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:26,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-20 06:16:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:26,836 INFO L225 Difference]: With dead ends: 221 [2020-10-20 06:16:26,836 INFO L226 Difference]: Without dead ends: 221 [2020-10-20 06:16:26,836 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 [2020-10-20 06:16:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-20 06:16:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 172. [2020-10-20 06:16:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-20 06:16:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 308 transitions. [2020-10-20 06:16:26,860 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 308 transitions. Word has length 26 [2020-10-20 06:16:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:26,860 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 308 transitions. [2020-10-20 06:16:26,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 308 transitions. [2020-10-20 06:16:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:26,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:26,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:26,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:16:26,866 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash -332998983, now seen corresponding path program 1 times [2020-10-20 06:16:26,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:26,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319768083] [2020-10-20 06:16:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:26,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319768083] [2020-10-20 06:16:26,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:26,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:26,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479095816] [2020-10-20 06:16:26,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:26,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:26,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:26,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:26,935 INFO L87 Difference]: Start difference. First operand 172 states and 308 transitions. Second operand 4 states. [2020-10-20 06:16:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:27,096 INFO L93 Difference]: Finished difference Result 321 states and 583 transitions. [2020-10-20 06:16:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:27,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-20 06:16:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:27,099 INFO L225 Difference]: With dead ends: 321 [2020-10-20 06:16:27,099 INFO L226 Difference]: Without dead ends: 321 [2020-10-20 06:16:27,099 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 [2020-10-20 06:16:27,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-20 06:16:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 232. [2020-10-20 06:16:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-20 06:16:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 414 transitions. [2020-10-20 06:16:27,111 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 414 transitions. Word has length 27 [2020-10-20 06:16:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:27,111 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 414 transitions. [2020-10-20 06:16:27,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 414 transitions. [2020-10-20 06:16:27,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:27,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:27,114 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] [2020-10-20 06:16:27,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:16:27,114 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:27,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:27,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1921346885, now seen corresponding path program 1 times [2020-10-20 06:16:27,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:27,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920750900] [2020-10-20 06:16:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:27,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920750900] [2020-10-20 06:16:27,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:27,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:27,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573056716] [2020-10-20 06:16:27,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:27,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:27,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:27,182 INFO L87 Difference]: Start difference. First operand 232 states and 414 transitions. Second operand 4 states. [2020-10-20 06:16:27,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:27,357 INFO L93 Difference]: Finished difference Result 329 states and 585 transitions. [2020-10-20 06:16:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:27,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-20 06:16:27,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:27,360 INFO L225 Difference]: With dead ends: 329 [2020-10-20 06:16:27,361 INFO L226 Difference]: Without dead ends: 329 [2020-10-20 06:16:27,361 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 [2020-10-20 06:16:27,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-20 06:16:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2020-10-20 06:16:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-20 06:16:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 584 transitions. [2020-10-20 06:16:27,373 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 584 transitions. Word has length 27 [2020-10-20 06:16:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:27,374 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 584 transitions. [2020-10-20 06:16:27,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 584 transitions. [2020-10-20 06:16:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:16:27,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:27,376 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] [2020-10-20 06:16:27,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:16:27,377 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1726435407, now seen corresponding path program 1 times [2020-10-20 06:16:27,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:27,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783285145] [2020-10-20 06:16:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:27,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783285145] [2020-10-20 06:16:27,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:27,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:27,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452798529] [2020-10-20 06:16:27,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:27,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:27,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:27,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:27,469 INFO L87 Difference]: Start difference. First operand 328 states and 584 transitions. Second operand 4 states. [2020-10-20 06:16:27,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:27,621 INFO L93 Difference]: Finished difference Result 335 states and 589 transitions. [2020-10-20 06:16:27,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:27,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-20 06:16:27,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:27,626 INFO L225 Difference]: With dead ends: 335 [2020-10-20 06:16:27,626 INFO L226 Difference]: Without dead ends: 335 [2020-10-20 06:16:27,626 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 [2020-10-20 06:16:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-20 06:16:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334. [2020-10-20 06:16:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-20 06:16:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 588 transitions. [2020-10-20 06:16:27,641 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 588 transitions. Word has length 28 [2020-10-20 06:16:27,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:27,641 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 588 transitions. [2020-10-20 06:16:27,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:27,642 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 588 transitions. [2020-10-20 06:16:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:16:27,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:27,643 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] [2020-10-20 06:16:27,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:16:27,643 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:27,644 INFO L82 PathProgramCache]: Analyzing trace with hash 574387183, now seen corresponding path program 1 times [2020-10-20 06:16:27,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:27,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20017544] [2020-10-20 06:16:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:27,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20017544] [2020-10-20 06:16:27,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:27,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:27,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747728403] [2020-10-20 06:16:27,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:27,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:27,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:27,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:27,698 INFO L87 Difference]: Start difference. First operand 334 states and 588 transitions. Second operand 4 states. [2020-10-20 06:16:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:27,865 INFO L93 Difference]: Finished difference Result 619 states and 1101 transitions. [2020-10-20 06:16:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:27,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-20 06:16:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:27,869 INFO L225 Difference]: With dead ends: 619 [2020-10-20 06:16:27,870 INFO L226 Difference]: Without dead ends: 619 [2020-10-20 06:16:27,870 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 [2020-10-20 06:16:27,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-10-20 06:16:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 458. [2020-10-20 06:16:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-20 06:16:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 796 transitions. [2020-10-20 06:16:27,881 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 796 transitions. Word has length 28 [2020-10-20 06:16:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:27,881 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 796 transitions. [2020-10-20 06:16:27,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 796 transitions. [2020-10-20 06:16:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:16:27,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:27,883 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] [2020-10-20 06:16:27,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:16:27,883 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:27,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1013960719, now seen corresponding path program 1 times [2020-10-20 06:16:27,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:27,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418307854] [2020-10-20 06:16:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:27,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418307854] [2020-10-20 06:16:27,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:27,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:27,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223191290] [2020-10-20 06:16:27,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:27,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:27,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:27,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:27,932 INFO L87 Difference]: Start difference. First operand 458 states and 796 transitions. Second operand 4 states. [2020-10-20 06:16:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:28,092 INFO L93 Difference]: Finished difference Result 643 states and 1113 transitions. [2020-10-20 06:16:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:28,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-20 06:16:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:28,096 INFO L225 Difference]: With dead ends: 643 [2020-10-20 06:16:28,096 INFO L226 Difference]: Without dead ends: 643 [2020-10-20 06:16:28,097 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 [2020-10-20 06:16:28,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-20 06:16:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 642. [2020-10-20 06:16:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-20 06:16:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1112 transitions. [2020-10-20 06:16:28,112 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1112 transitions. Word has length 28 [2020-10-20 06:16:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:28,112 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 1112 transitions. [2020-10-20 06:16:28,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1112 transitions. [2020-10-20 06:16:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:16:28,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:28,114 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] [2020-10-20 06:16:28,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:16:28,115 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:28,115 INFO L82 PathProgramCache]: Analyzing trace with hash 632742534, now seen corresponding path program 1 times [2020-10-20 06:16:28,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:28,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416109697] [2020-10-20 06:16:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:28,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416109697] [2020-10-20 06:16:28,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:28,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:28,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269340417] [2020-10-20 06:16:28,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:28,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:28,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:28,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:28,164 INFO L87 Difference]: Start difference. First operand 642 states and 1112 transitions. Second operand 4 states. [2020-10-20 06:16:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:28,318 INFO L93 Difference]: Finished difference Result 651 states and 1113 transitions. [2020-10-20 06:16:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:28,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-20 06:16:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:28,322 INFO L225 Difference]: With dead ends: 651 [2020-10-20 06:16:28,322 INFO L226 Difference]: Without dead ends: 651 [2020-10-20 06:16:28,323 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 [2020-10-20 06:16:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-10-20 06:16:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 650. [2020-10-20 06:16:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-10-20 06:16:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1112 transitions. [2020-10-20 06:16:28,337 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1112 transitions. Word has length 29 [2020-10-20 06:16:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:28,337 INFO L481 AbstractCegarLoop]: Abstraction has 650 states and 1112 transitions. [2020-10-20 06:16:28,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1112 transitions. [2020-10-20 06:16:28,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:16:28,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:28,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:28,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 06:16:28,339 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:28,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1361402172, now seen corresponding path program 1 times [2020-10-20 06:16:28,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:28,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663240262] [2020-10-20 06:16:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:28,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:28,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663240262] [2020-10-20 06:16:28,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:28,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:28,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597513133] [2020-10-20 06:16:28,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:28,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:28,385 INFO L87 Difference]: Start difference. First operand 650 states and 1112 transitions. Second operand 4 states. [2020-10-20 06:16:28,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:28,552 INFO L93 Difference]: Finished difference Result 1195 states and 2065 transitions. [2020-10-20 06:16:28,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:28,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-20 06:16:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:28,559 INFO L225 Difference]: With dead ends: 1195 [2020-10-20 06:16:28,559 INFO L226 Difference]: Without dead ends: 1195 [2020-10-20 06:16:28,560 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 [2020-10-20 06:16:28,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-20 06:16:28,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 906. [2020-10-20 06:16:28,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-10-20 06:16:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1520 transitions. [2020-10-20 06:16:28,581 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1520 transitions. Word has length 29 [2020-10-20 06:16:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:28,581 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1520 transitions. [2020-10-20 06:16:28,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1520 transitions. [2020-10-20 06:16:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:16:28,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:28,584 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] [2020-10-20 06:16:28,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 06:16:28,584 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:28,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:28,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1345217222, now seen corresponding path program 1 times [2020-10-20 06:16:28,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:28,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273071679] [2020-10-20 06:16:28,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:28,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273071679] [2020-10-20 06:16:28,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:28,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:28,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753108634] [2020-10-20 06:16:28,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:28,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:28,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:28,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:28,630 INFO L87 Difference]: Start difference. First operand 906 states and 1520 transitions. Second operand 4 states. [2020-10-20 06:16:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:28,830 INFO L93 Difference]: Finished difference Result 1259 states and 2105 transitions. [2020-10-20 06:16:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:28,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-20 06:16:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:28,837 INFO L225 Difference]: With dead ends: 1259 [2020-10-20 06:16:28,838 INFO L226 Difference]: Without dead ends: 1259 [2020-10-20 06:16:28,838 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 [2020-10-20 06:16:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2020-10-20 06:16:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1258. [2020-10-20 06:16:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-10-20 06:16:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2104 transitions. [2020-10-20 06:16:28,873 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2104 transitions. Word has length 29 [2020-10-20 06:16:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:28,873 INFO L481 AbstractCegarLoop]: Abstraction has 1258 states and 2104 transitions. [2020-10-20 06:16:28,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2104 transitions. [2020-10-20 06:16:28,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:16:28,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:28,876 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] [2020-10-20 06:16:28,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:16:28,876 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash 752825244, now seen corresponding path program 1 times [2020-10-20 06:16:28,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:28,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406202496] [2020-10-20 06:16:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:28,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406202496] [2020-10-20 06:16:28,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:28,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:28,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992189267] [2020-10-20 06:16:28,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:28,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:28,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:28,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:28,930 INFO L87 Difference]: Start difference. First operand 1258 states and 2104 transitions. Second operand 4 states. [2020-10-20 06:16:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:29,108 INFO L93 Difference]: Finished difference Result 1275 states and 2105 transitions. [2020-10-20 06:16:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:29,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-20 06:16:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:29,115 INFO L225 Difference]: With dead ends: 1275 [2020-10-20 06:16:29,115 INFO L226 Difference]: Without dead ends: 1275 [2020-10-20 06:16:29,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-10-20 06:16:29,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1274. [2020-10-20 06:16:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2020-10-20 06:16:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2104 transitions. [2020-10-20 06:16:29,143 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2104 transitions. Word has length 30 [2020-10-20 06:16:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:29,144 INFO L481 AbstractCegarLoop]: Abstraction has 1274 states and 2104 transitions. [2020-10-20 06:16:29,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2104 transitions. [2020-10-20 06:16:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:16:29,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:29,146 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] [2020-10-20 06:16:29,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 06:16:29,146 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:29,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1241319462, now seen corresponding path program 1 times [2020-10-20 06:16:29,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:29,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275631919] [2020-10-20 06:16:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:29,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275631919] [2020-10-20 06:16:29,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:29,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:29,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710552749] [2020-10-20 06:16:29,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:29,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:29,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:29,192 INFO L87 Difference]: Start difference. First operand 1274 states and 2104 transitions. Second operand 4 states. [2020-10-20 06:16:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:29,356 INFO L93 Difference]: Finished difference Result 2315 states and 3865 transitions. [2020-10-20 06:16:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:29,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-20 06:16:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:29,368 INFO L225 Difference]: With dead ends: 2315 [2020-10-20 06:16:29,368 INFO L226 Difference]: Without dead ends: 2315 [2020-10-20 06:16:29,369 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 [2020-10-20 06:16:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-10-20 06:16:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1802. [2020-10-20 06:16:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-20 06:16:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2904 transitions. [2020-10-20 06:16:29,407 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2904 transitions. Word has length 30 [2020-10-20 06:16:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:29,408 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 2904 transitions. [2020-10-20 06:16:29,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:29,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2904 transitions. [2020-10-20 06:16:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:16:29,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:29,411 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] [2020-10-20 06:16:29,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-20 06:16:29,412 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:29,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1465299932, now seen corresponding path program 1 times [2020-10-20 06:16:29,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:29,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683896213] [2020-10-20 06:16:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:29,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:29,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683896213] [2020-10-20 06:16:29,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:29,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:29,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006721553] [2020-10-20 06:16:29,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:29,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:29,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:29,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:29,457 INFO L87 Difference]: Start difference. First operand 1802 states and 2904 transitions. Second operand 4 states. [2020-10-20 06:16:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:29,614 INFO L93 Difference]: Finished difference Result 2475 states and 3977 transitions. [2020-10-20 06:16:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:29,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-20 06:16:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:29,625 INFO L225 Difference]: With dead ends: 2475 [2020-10-20 06:16:29,625 INFO L226 Difference]: Without dead ends: 2475 [2020-10-20 06:16:29,626 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 [2020-10-20 06:16:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2020-10-20 06:16:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2474. [2020-10-20 06:16:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2020-10-20 06:16:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3976 transitions. [2020-10-20 06:16:29,679 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3976 transitions. Word has length 30 [2020-10-20 06:16:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:29,680 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3976 transitions. [2020-10-20 06:16:29,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3976 transitions. [2020-10-20 06:16:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 06:16:29,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:29,683 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] [2020-10-20 06:16:29,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-20 06:16:29,684 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:29,685 INFO L82 PathProgramCache]: Analyzing trace with hash 180432529, now seen corresponding path program 1 times [2020-10-20 06:16:29,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:29,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225741481] [2020-10-20 06:16:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:29,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225741481] [2020-10-20 06:16:29,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:29,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:29,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543598636] [2020-10-20 06:16:29,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:29,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:29,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:29,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:29,736 INFO L87 Difference]: Start difference. First operand 2474 states and 3976 transitions. Second operand 4 states. [2020-10-20 06:16:29,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:29,898 INFO L93 Difference]: Finished difference Result 2507 states and 3977 transitions. [2020-10-20 06:16:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:29,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 06:16:29,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:29,910 INFO L225 Difference]: With dead ends: 2507 [2020-10-20 06:16:29,910 INFO L226 Difference]: Without dead ends: 2507 [2020-10-20 06:16:29,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-10-20 06:16:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2506. [2020-10-20 06:16:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2020-10-20 06:16:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3976 transitions. [2020-10-20 06:16:29,957 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3976 transitions. Word has length 31 [2020-10-20 06:16:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:29,958 INFO L481 AbstractCegarLoop]: Abstraction has 2506 states and 3976 transitions. [2020-10-20 06:16:29,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:29,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3976 transitions. [2020-10-20 06:16:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 06:16:29,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:29,961 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] [2020-10-20 06:16:29,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-20 06:16:29,961 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:29,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:29,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1813712177, now seen corresponding path program 1 times [2020-10-20 06:16:29,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:29,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149300221] [2020-10-20 06:16:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:29,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:30,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149300221] [2020-10-20 06:16:30,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:30,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:30,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901431968] [2020-10-20 06:16:30,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:30,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:30,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:30,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:30,005 INFO L87 Difference]: Start difference. First operand 2506 states and 3976 transitions. Second operand 4 states. [2020-10-20 06:16:30,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:30,172 INFO L93 Difference]: Finished difference Result 4491 states and 7209 transitions. [2020-10-20 06:16:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:30,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 06:16:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:30,193 INFO L225 Difference]: With dead ends: 4491 [2020-10-20 06:16:30,193 INFO L226 Difference]: Without dead ends: 4491 [2020-10-20 06:16:30,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2020-10-20 06:16:30,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 3594. [2020-10-20 06:16:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-20 06:16:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5544 transitions. [2020-10-20 06:16:30,270 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5544 transitions. Word has length 31 [2020-10-20 06:16:30,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:30,270 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 5544 transitions. [2020-10-20 06:16:30,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:30,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5544 transitions. [2020-10-20 06:16:30,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 06:16:30,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:30,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:30,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-20 06:16:30,451 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:30,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:30,451 INFO L82 PathProgramCache]: Analyzing trace with hash 892907217, now seen corresponding path program 1 times [2020-10-20 06:16:30,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:30,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423844109] [2020-10-20 06:16:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:30,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423844109] [2020-10-20 06:16:30,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:30,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:30,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577338953] [2020-10-20 06:16:30,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:30,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:30,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:30,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:30,509 INFO L87 Difference]: Start difference. First operand 3594 states and 5544 transitions. Second operand 4 states. [2020-10-20 06:16:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:30,656 INFO L93 Difference]: Finished difference Result 4875 states and 7497 transitions. [2020-10-20 06:16:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:30,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 06:16:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:30,699 INFO L225 Difference]: With dead ends: 4875 [2020-10-20 06:16:30,699 INFO L226 Difference]: Without dead ends: 4875 [2020-10-20 06:16:30,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:30,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2020-10-20 06:16:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4874. [2020-10-20 06:16:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4874 states. [2020-10-20 06:16:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 7496 transitions. [2020-10-20 06:16:30,816 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 7496 transitions. Word has length 31 [2020-10-20 06:16:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:30,816 INFO L481 AbstractCegarLoop]: Abstraction has 4874 states and 7496 transitions. [2020-10-20 06:16:30,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 7496 transitions. [2020-10-20 06:16:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 06:16:30,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:30,822 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] [2020-10-20 06:16:30,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-20 06:16:30,823 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:30,823 INFO L82 PathProgramCache]: Analyzing trace with hash -383861881, now seen corresponding path program 1 times [2020-10-20 06:16:30,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:30,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941494683] [2020-10-20 06:16:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:30,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:30,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941494683] [2020-10-20 06:16:30,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:30,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:30,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011202986] [2020-10-20 06:16:30,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:30,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:30,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:30,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:30,872 INFO L87 Difference]: Start difference. First operand 4874 states and 7496 transitions. Second operand 4 states. [2020-10-20 06:16:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:31,054 INFO L93 Difference]: Finished difference Result 4939 states and 7497 transitions. [2020-10-20 06:16:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:31,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-20 06:16:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:31,064 INFO L225 Difference]: With dead ends: 4939 [2020-10-20 06:16:31,064 INFO L226 Difference]: Without dead ends: 4939 [2020-10-20 06:16:31,064 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 [2020-10-20 06:16:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2020-10-20 06:16:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4938. [2020-10-20 06:16:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4938 states. [2020-10-20 06:16:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 7496 transitions. [2020-10-20 06:16:31,139 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 7496 transitions. Word has length 32 [2020-10-20 06:16:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:31,139 INFO L481 AbstractCegarLoop]: Abstraction has 4938 states and 7496 transitions. [2020-10-20 06:16:31,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 7496 transitions. [2020-10-20 06:16:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 06:16:31,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:31,145 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] [2020-10-20 06:16:31,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-20 06:16:31,146 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:31,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1916960709, now seen corresponding path program 1 times [2020-10-20 06:16:31,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:31,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216797705] [2020-10-20 06:16:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:31,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216797705] [2020-10-20 06:16:31,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:31,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:31,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447990880] [2020-10-20 06:16:31,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:31,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:31,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:31,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:31,194 INFO L87 Difference]: Start difference. First operand 4938 states and 7496 transitions. Second operand 4 states. [2020-10-20 06:16:31,411 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-20 06:16:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:31,508 INFO L93 Difference]: Finished difference Result 8715 states and 13385 transitions. [2020-10-20 06:16:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:31,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-20 06:16:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:31,524 INFO L225 Difference]: With dead ends: 8715 [2020-10-20 06:16:31,524 INFO L226 Difference]: Without dead ends: 8715 [2020-10-20 06:16:31,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2020-10-20 06:16:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 7178. [2020-10-20 06:16:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7178 states. [2020-10-20 06:16:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 10568 transitions. [2020-10-20 06:16:31,632 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 10568 transitions. Word has length 32 [2020-10-20 06:16:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:31,632 INFO L481 AbstractCegarLoop]: Abstraction has 7178 states and 10568 transitions. [2020-10-20 06:16:31,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 10568 transitions. [2020-10-20 06:16:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 06:16:31,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:31,641 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] [2020-10-20 06:16:31,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-20 06:16:31,642 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:31,642 INFO L82 PathProgramCache]: Analyzing trace with hash 328612807, now seen corresponding path program 1 times [2020-10-20 06:16:31,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:31,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115921379] [2020-10-20 06:16:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:31,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115921379] [2020-10-20 06:16:31,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:31,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:31,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871797646] [2020-10-20 06:16:31,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:31,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:31,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:31,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:31,687 INFO L87 Difference]: Start difference. First operand 7178 states and 10568 transitions. Second operand 4 states. [2020-10-20 06:16:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:31,840 INFO L93 Difference]: Finished difference Result 9611 states and 14089 transitions. [2020-10-20 06:16:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:31,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-20 06:16:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:31,893 INFO L225 Difference]: With dead ends: 9611 [2020-10-20 06:16:31,894 INFO L226 Difference]: Without dead ends: 9611 [2020-10-20 06:16:31,894 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 [2020-10-20 06:16:31,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9611 states. [2020-10-20 06:16:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9611 to 9610. [2020-10-20 06:16:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9610 states. [2020-10-20 06:16:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 14088 transitions. [2020-10-20 06:16:32,022 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 14088 transitions. Word has length 32 [2020-10-20 06:16:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:32,022 INFO L481 AbstractCegarLoop]: Abstraction has 9610 states and 14088 transitions. [2020-10-20 06:16:32,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 14088 transitions. [2020-10-20 06:16:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 06:16:32,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:32,038 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] [2020-10-20 06:16:32,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-20 06:16:32,039 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:32,040 INFO L82 PathProgramCache]: Analyzing trace with hash -697108836, now seen corresponding path program 1 times [2020-10-20 06:16:32,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:32,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774777012] [2020-10-20 06:16:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:32,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774777012] [2020-10-20 06:16:32,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:32,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:32,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626527738] [2020-10-20 06:16:32,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:32,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:32,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:32,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:32,322 INFO L87 Difference]: Start difference. First operand 9610 states and 14088 transitions. Second operand 4 states. [2020-10-20 06:16:32,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:32,470 INFO L93 Difference]: Finished difference Result 9739 states and 14089 transitions. [2020-10-20 06:16:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:32,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-20 06:16:32,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:32,489 INFO L225 Difference]: With dead ends: 9739 [2020-10-20 06:16:32,490 INFO L226 Difference]: Without dead ends: 9739 [2020-10-20 06:16:32,490 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 [2020-10-20 06:16:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2020-10-20 06:16:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 9738. [2020-10-20 06:16:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9738 states. [2020-10-20 06:16:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 14088 transitions. [2020-10-20 06:16:32,638 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 14088 transitions. Word has length 33 [2020-10-20 06:16:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:32,639 INFO L481 AbstractCegarLoop]: Abstraction has 9738 states and 14088 transitions. [2020-10-20 06:16:32,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:32,639 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 14088 transitions. [2020-10-20 06:16:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 06:16:32,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:32,649 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] [2020-10-20 06:16:32,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-20 06:16:32,650 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:32,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:32,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1603713754, now seen corresponding path program 1 times [2020-10-20 06:16:32,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:32,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075270493] [2020-10-20 06:16:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:32,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075270493] [2020-10-20 06:16:32,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:32,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:32,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549742645] [2020-10-20 06:16:32,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:32,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:32,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:32,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:32,692 INFO L87 Difference]: Start difference. First operand 9738 states and 14088 transitions. Second operand 4 states. [2020-10-20 06:16:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:32,906 INFO L93 Difference]: Finished difference Result 16907 states and 24713 transitions. [2020-10-20 06:16:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:32,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-20 06:16:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:32,937 INFO L225 Difference]: With dead ends: 16907 [2020-10-20 06:16:32,938 INFO L226 Difference]: Without dead ends: 16907 [2020-10-20 06:16:32,938 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 [2020-10-20 06:16:32,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16907 states. [2020-10-20 06:16:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16907 to 14346. [2020-10-20 06:16:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14346 states. [2020-10-20 06:16:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14346 states to 14346 states and 20104 transitions. [2020-10-20 06:16:33,175 INFO L78 Accepts]: Start accepts. Automaton has 14346 states and 20104 transitions. Word has length 33 [2020-10-20 06:16:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:33,175 INFO L481 AbstractCegarLoop]: Abstraction has 14346 states and 20104 transitions. [2020-10-20 06:16:33,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 14346 states and 20104 transitions. [2020-10-20 06:16:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 06:16:33,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:33,196 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, 1, 1, 1] [2020-10-20 06:16:33,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-20 06:16:33,197 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash 15365852, now seen corresponding path program 1 times [2020-10-20 06:16:33,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:33,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932689161] [2020-10-20 06:16:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:33,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932689161] [2020-10-20 06:16:33,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:33,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:33,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851317498] [2020-10-20 06:16:33,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:33,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:33,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:33,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:33,244 INFO L87 Difference]: Start difference. First operand 14346 states and 20104 transitions. Second operand 4 states. [2020-10-20 06:16:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:33,650 INFO L93 Difference]: Finished difference Result 18955 states and 26377 transitions. [2020-10-20 06:16:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:33,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-20 06:16:33,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:33,671 INFO L225 Difference]: With dead ends: 18955 [2020-10-20 06:16:33,671 INFO L226 Difference]: Without dead ends: 18955 [2020-10-20 06:16:33,672 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 [2020-10-20 06:16:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18955 states. [2020-10-20 06:16:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18955 to 18954. [2020-10-20 06:16:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18954 states. [2020-10-20 06:16:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18954 states to 18954 states and 26376 transitions. [2020-10-20 06:16:33,887 INFO L78 Accepts]: Start accepts. Automaton has 18954 states and 26376 transitions. Word has length 33 [2020-10-20 06:16:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:33,888 INFO L481 AbstractCegarLoop]: Abstraction has 18954 states and 26376 transitions. [2020-10-20 06:16:33,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 18954 states and 26376 transitions. [2020-10-20 06:16:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:16:33,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:33,971 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] [2020-10-20 06:16:33,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-20 06:16:33,971 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:33,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1817819278, now seen corresponding path program 1 times [2020-10-20 06:16:33,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:33,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3835812] [2020-10-20 06:16:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:34,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3835812] [2020-10-20 06:16:34,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:34,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:34,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031897493] [2020-10-20 06:16:34,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:34,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:34,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:34,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:34,008 INFO L87 Difference]: Start difference. First operand 18954 states and 26376 transitions. Second operand 4 states. [2020-10-20 06:16:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:34,191 INFO L93 Difference]: Finished difference Result 19211 states and 26377 transitions. [2020-10-20 06:16:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:34,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-20 06:16:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:34,214 INFO L225 Difference]: With dead ends: 19211 [2020-10-20 06:16:34,214 INFO L226 Difference]: Without dead ends: 19211 [2020-10-20 06:16:34,215 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 [2020-10-20 06:16:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19211 states. [2020-10-20 06:16:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19211 to 19210. [2020-10-20 06:16:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19210 states. [2020-10-20 06:16:35,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19210 states to 19210 states and 26376 transitions. [2020-10-20 06:16:35,009 INFO L78 Accepts]: Start accepts. Automaton has 19210 states and 26376 transitions. Word has length 34 [2020-10-20 06:16:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:35,010 INFO L481 AbstractCegarLoop]: Abstraction has 19210 states and 26376 transitions. [2020-10-20 06:16:35,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:35,010 INFO L276 IsEmpty]: Start isEmpty. Operand 19210 states and 26376 transitions. [2020-10-20 06:16:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:16:35,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:35,039 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] [2020-10-20 06:16:35,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-20 06:16:35,040 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash 483003312, now seen corresponding path program 1 times [2020-10-20 06:16:35,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:35,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108333417] [2020-10-20 06:16:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:35,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108333417] [2020-10-20 06:16:35,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:35,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:35,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178188617] [2020-10-20 06:16:35,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:35,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:35,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:35,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:35,086 INFO L87 Difference]: Start difference. First operand 19210 states and 26376 transitions. Second operand 4 states. [2020-10-20 06:16:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:35,275 INFO L93 Difference]: Finished difference Result 37387 states and 49673 transitions. [2020-10-20 06:16:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:35,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-20 06:16:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:35,392 INFO L225 Difference]: With dead ends: 37387 [2020-10-20 06:16:35,392 INFO L226 Difference]: Without dead ends: 37387 [2020-10-20 06:16:35,392 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 [2020-10-20 06:16:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37387 states. [2020-10-20 06:16:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37387 to 37386. [2020-10-20 06:16:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-10-20 06:16:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 49672 transitions. [2020-10-20 06:16:36,218 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 49672 transitions. Word has length 34 [2020-10-20 06:16:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:36,218 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 49672 transitions. [2020-10-20 06:16:36,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 49672 transitions. [2020-10-20 06:16:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:16:36,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:36,243 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] [2020-10-20 06:16:36,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-20 06:16:36,243 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:36,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:36,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2071351214, now seen corresponding path program 1 times [2020-10-20 06:16:36,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:36,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660871211] [2020-10-20 06:16:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:36,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660871211] [2020-10-20 06:16:36,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:36,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:36,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634228700] [2020-10-20 06:16:36,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:36,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:36,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:36,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:36,293 INFO L87 Difference]: Start difference. First operand 37386 states and 49672 transitions. Second operand 4 states. [2020-10-20 06:16:36,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:36,969 INFO L93 Difference]: Finished difference Result 41483 states and 56329 transitions. [2020-10-20 06:16:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:36,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-20 06:16:36,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:37,017 INFO L225 Difference]: With dead ends: 41483 [2020-10-20 06:16:37,017 INFO L226 Difference]: Without dead ends: 41483 [2020-10-20 06:16:37,019 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 [2020-10-20 06:16:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41483 states. [2020-10-20 06:16:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41483 to 37386. [2020-10-20 06:16:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-10-20 06:16:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 49160 transitions. [2020-10-20 06:16:37,571 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 49160 transitions. Word has length 34 [2020-10-20 06:16:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:37,571 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 49160 transitions. [2020-10-20 06:16:37,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 49160 transitions. [2020-10-20 06:16:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-20 06:16:37,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:37,585 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] [2020-10-20 06:16:37,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-20 06:16:37,585 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:37,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2094873255, now seen corresponding path program 1 times [2020-10-20 06:16:37,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:37,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704323596] [2020-10-20 06:16:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:37,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:37,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704323596] [2020-10-20 06:16:37,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:37,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:37,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863410405] [2020-10-20 06:16:37,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:37,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:37,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:37,628 INFO L87 Difference]: Start difference. First operand 37386 states and 49160 transitions. Second operand 4 states. [2020-10-20 06:16:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:38,402 INFO L93 Difference]: Finished difference Result 62987 states and 82953 transitions. [2020-10-20 06:16:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:38,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-20 06:16:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:38,450 INFO L225 Difference]: With dead ends: 62987 [2020-10-20 06:16:38,450 INFO L226 Difference]: Without dead ends: 62987 [2020-10-20 06:16:38,451 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 [2020-10-20 06:16:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62987 states. [2020-10-20 06:16:39,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62987 to 56842. [2020-10-20 06:16:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56842 states. [2020-10-20 06:16:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56842 states to 56842 states and 72712 transitions. [2020-10-20 06:16:39,623 INFO L78 Accepts]: Start accepts. Automaton has 56842 states and 72712 transitions. Word has length 35 [2020-10-20 06:16:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:39,623 INFO L481 AbstractCegarLoop]: Abstraction has 56842 states and 72712 transitions. [2020-10-20 06:16:39,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand 56842 states and 72712 transitions. [2020-10-20 06:16:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-20 06:16:39,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:39,651 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] [2020-10-20 06:16:39,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-20 06:16:39,651 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash 506525353, now seen corresponding path program 1 times [2020-10-20 06:16:39,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:39,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382479964] [2020-10-20 06:16:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:39,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382479964] [2020-10-20 06:16:39,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:39,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:39,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044406473] [2020-10-20 06:16:39,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:39,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:39,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:39,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:39,691 INFO L87 Difference]: Start difference. First operand 56842 states and 72712 transitions. Second operand 4 states. [2020-10-20 06:16:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:40,664 INFO L93 Difference]: Finished difference Result 73227 states and 92169 transitions. [2020-10-20 06:16:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:40,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-20 06:16:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:40,744 INFO L225 Difference]: With dead ends: 73227 [2020-10-20 06:16:40,744 INFO L226 Difference]: Without dead ends: 73227 [2020-10-20 06:16:40,745 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 [2020-10-20 06:16:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73227 states. [2020-10-20 06:16:41,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73227 to 73226. [2020-10-20 06:16:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73226 states. [2020-10-20 06:16:41,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73226 states to 73226 states and 92168 transitions. [2020-10-20 06:16:41,734 INFO L78 Accepts]: Start accepts. Automaton has 73226 states and 92168 transitions. Word has length 35 [2020-10-20 06:16:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:41,734 INFO L481 AbstractCegarLoop]: Abstraction has 73226 states and 92168 transitions. [2020-10-20 06:16:41,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:41,734 INFO L276 IsEmpty]: Start isEmpty. Operand 73226 states and 92168 transitions. [2020-10-20 06:16:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:16:41,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:41,771 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] [2020-10-20 06:16:41,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-20 06:16:41,772 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:41,772 INFO L82 PathProgramCache]: Analyzing trace with hash 523244507, now seen corresponding path program 1 times [2020-10-20 06:16:41,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:41,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617193200] [2020-10-20 06:16:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:41,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:41,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617193200] [2020-10-20 06:16:41,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:41,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:41,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675769595] [2020-10-20 06:16:41,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:41,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:41,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:41,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:41,815 INFO L87 Difference]: Start difference. First operand 73226 states and 92168 transitions. Second operand 4 states. [2020-10-20 06:16:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:42,819 INFO L93 Difference]: Finished difference Result 74763 states and 93193 transitions. [2020-10-20 06:16:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:42,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-20 06:16:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:42,877 INFO L225 Difference]: With dead ends: 74763 [2020-10-20 06:16:42,877 INFO L226 Difference]: Without dead ends: 74763 [2020-10-20 06:16:42,877 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 [2020-10-20 06:16:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74763 states. [2020-10-20 06:16:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74763 to 74762. [2020-10-20 06:16:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74762 states. [2020-10-20 06:16:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74762 states to 74762 states and 93192 transitions. [2020-10-20 06:16:43,708 INFO L78 Accepts]: Start accepts. Automaton has 74762 states and 93192 transitions. Word has length 36 [2020-10-20 06:16:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:43,709 INFO L481 AbstractCegarLoop]: Abstraction has 74762 states and 93192 transitions. [2020-10-20 06:16:43,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 74762 states and 93192 transitions. [2020-10-20 06:16:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:16:43,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:43,736 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] [2020-10-20 06:16:43,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-20 06:16:43,736 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1470900199, now seen corresponding path program 1 times [2020-10-20 06:16:43,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:43,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096983096] [2020-10-20 06:16:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:43,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:43,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096983096] [2020-10-20 06:16:43,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:43,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:43,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409836505] [2020-10-20 06:16:43,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:43,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:43,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:43,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:43,784 INFO L87 Difference]: Start difference. First operand 74762 states and 93192 transitions. Second operand 4 states. [2020-10-20 06:16:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:44,918 INFO L93 Difference]: Finished difference Result 122891 states and 151561 transitions. [2020-10-20 06:16:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:44,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-20 06:16:44,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:45,022 INFO L225 Difference]: With dead ends: 122891 [2020-10-20 06:16:45,022 INFO L226 Difference]: Without dead ends: 122891 [2020-10-20 06:16:45,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122891 states. [2020-10-20 06:16:47,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122891 to 114698. [2020-10-20 06:16:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114698 states. [2020-10-20 06:16:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114698 states to 114698 states and 139272 transitions. [2020-10-20 06:16:47,822 INFO L78 Accepts]: Start accepts. Automaton has 114698 states and 139272 transitions. Word has length 36 [2020-10-20 06:16:47,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:47,822 INFO L481 AbstractCegarLoop]: Abstraction has 114698 states and 139272 transitions. [2020-10-20 06:16:47,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 114698 states and 139272 transitions. [2020-10-20 06:16:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:16:47,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:47,885 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] [2020-10-20 06:16:47,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-20 06:16:47,886 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:47,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1235719195, now seen corresponding path program 1 times [2020-10-20 06:16:47,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:47,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869561283] [2020-10-20 06:16:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:47,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869561283] [2020-10-20 06:16:47,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:47,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:47,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11164411] [2020-10-20 06:16:47,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:47,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:47,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:47,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:47,926 INFO L87 Difference]: Start difference. First operand 114698 states and 139272 transitions. Second operand 4 states. [2020-10-20 06:16:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:49,732 INFO L93 Difference]: Finished difference Result 145419 states and 172041 transitions. [2020-10-20 06:16:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:49,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-20 06:16:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:49,845 INFO L225 Difference]: With dead ends: 145419 [2020-10-20 06:16:49,845 INFO L226 Difference]: Without dead ends: 145419 [2020-10-20 06:16:49,845 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 [2020-10-20 06:16:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145419 states. [2020-10-20 06:16:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145419 to 145418. [2020-10-20 06:16:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145418 states. [2020-10-20 06:16:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145418 states to 145418 states and 172040 transitions. [2020-10-20 06:16:52,791 INFO L78 Accepts]: Start accepts. Automaton has 145418 states and 172040 transitions. Word has length 36 [2020-10-20 06:16:52,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:52,791 INFO L481 AbstractCegarLoop]: Abstraction has 145418 states and 172040 transitions. [2020-10-20 06:16:52,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 145418 states and 172040 transitions. [2020-10-20 06:16:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 06:16:52,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:52,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:52,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-20 06:16:52,843 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:52,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1653427700, now seen corresponding path program 1 times [2020-10-20 06:16:52,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:52,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21000061] [2020-10-20 06:16:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:52,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:52,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21000061] [2020-10-20 06:16:52,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:52,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:52,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40575608] [2020-10-20 06:16:52,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:52,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:52,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:52,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:52,879 INFO L87 Difference]: Start difference. First operand 145418 states and 172040 transitions. Second operand 4 states. [2020-10-20 06:16:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:54,194 INFO L93 Difference]: Finished difference Result 147467 states and 172041 transitions. [2020-10-20 06:16:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:54,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-20 06:16:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:54,379 INFO L225 Difference]: With dead ends: 147467 [2020-10-20 06:16:54,379 INFO L226 Difference]: Without dead ends: 147467 [2020-10-20 06:16:54,380 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 [2020-10-20 06:16:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147467 states. [2020-10-20 06:16:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147467 to 147466. [2020-10-20 06:16:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147466 states. [2020-10-20 06:16:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147466 states to 147466 states and 172040 transitions. [2020-10-20 06:16:57,870 INFO L78 Accepts]: Start accepts. Automaton has 147466 states and 172040 transitions. Word has length 37 [2020-10-20 06:16:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:57,871 INFO L481 AbstractCegarLoop]: Abstraction has 147466 states and 172040 transitions. [2020-10-20 06:16:57,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 147466 states and 172040 transitions. [2020-10-20 06:16:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 06:16:57,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:57,927 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:57,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-20 06:16:57,928 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:57,928 INFO L82 PathProgramCache]: Analyzing trace with hash -340717006, now seen corresponding path program 1 times [2020-10-20 06:16:57,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:57,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960262877] [2020-10-20 06:16:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:57,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960262877] [2020-10-20 06:16:57,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:57,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:57,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624018892] [2020-10-20 06:16:57,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:57,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:57,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:57,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:57,972 INFO L87 Difference]: Start difference. First operand 147466 states and 172040 transitions. Second operand 4 states. [2020-10-20 06:17:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:00,704 INFO L93 Difference]: Finished difference Result 237578 states and 270344 transitions. [2020-10-20 06:17:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:17:00,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-20 06:17:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:01,012 INFO L225 Difference]: With dead ends: 237578 [2020-10-20 06:17:01,012 INFO L226 Difference]: Without dead ends: 237578 [2020-10-20 06:17:01,012 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 [2020-10-20 06:17:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237578 states. [2020-10-20 06:17:03,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237578 to 229386. [2020-10-20 06:17:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229386 states. [2020-10-20 06:17:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229386 states to 229386 states and 262152 transitions. [2020-10-20 06:17:03,743 INFO L78 Accepts]: Start accepts. Automaton has 229386 states and 262152 transitions. Word has length 37 [2020-10-20 06:17:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:03,743 INFO L481 AbstractCegarLoop]: Abstraction has 229386 states and 262152 transitions. [2020-10-20 06:17:03,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 229386 states and 262152 transitions. [2020-10-20 06:17:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 06:17:06,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:06,643 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] [2020-10-20 06:17:06,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-20 06:17:06,643 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1929064908, now seen corresponding path program 1 times [2020-10-20 06:17:06,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:06,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727264862] [2020-10-20 06:17:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:06,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:06,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727264862] [2020-10-20 06:17:06,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:06,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:17:06,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628894531] [2020-10-20 06:17:06,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:06,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:06,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:06,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:06,682 INFO L87 Difference]: Start difference. First operand 229386 states and 262152 transitions. Second operand 4 states. [2020-10-20 06:17:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:08,072 INFO L93 Difference]: Finished difference Result 286727 states and 315398 transitions. [2020-10-20 06:17:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:17:08,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-20 06:17:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:08,073 INFO L225 Difference]: With dead ends: 286727 [2020-10-20 06:17:08,073 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:17:08,073 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 [2020-10-20 06:17:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:17:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:17:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:17:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:17:08,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-20 06:17:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:08,074 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:17:08,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:17:08,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:17:08,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-20 06:17:08,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:17:08 BoogieIcfgContainer [2020-10-20 06:17:08,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:17:08,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:17:08,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:17:08,080 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:17:08,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:24" (3/4) ... [2020-10-20 06:17:08,085 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:17:08,092 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-20 06:17:08,092 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:17:08,092 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:17:08,100 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-20 06:17:08,101 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 06:17:08,101 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:17:08,102 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:17:08,164 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:17:08,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:17:08,171 INFO L168 Benchmark]: Toolchain (without parser) took 44281.14 ms. Allocated memory was 41.9 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 21.2 MB in the beginning and 485.9 MB in the end (delta: -464.7 MB). Peak memory consumption was 821.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:08,172 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 31.5 MB. Free memory was 8.8 MB in the beginning and 8.8 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:17:08,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.51 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 20.3 MB in the beginning and 20.2 MB in the end (delta: 176.5 kB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:08,172 INFO L168 Benchmark]: Boogie Preprocessor took 41.34 ms. Allocated memory is still 42.5 MB. Free memory was 20.2 MB in the beginning and 18.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:08,173 INFO L168 Benchmark]: RCFGBuilder took 465.89 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 18.0 MB in the beginning and 27.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:08,173 INFO L168 Benchmark]: TraceAbstraction took 43374.14 ms. Allocated memory was 44.6 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 26.7 MB in the beginning and 492.3 MB in the end (delta: -465.6 MB). Peak memory consumption was 818.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:08,174 INFO L168 Benchmark]: Witness Printer took 84.53 ms. Allocated memory is still 1.3 GB. Free memory was 492.3 MB in the beginning and 485.9 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:08,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 31.5 MB. Free memory was 8.8 MB in the beginning and 8.8 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 306.51 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 20.3 MB in the beginning and 20.2 MB in the end (delta: 176.5 kB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 41.34 ms. Allocated memory is still 42.5 MB. Free memory was 20.2 MB in the beginning and 18.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 465.89 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 18.0 MB in the beginning and 27.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 43374.14 ms. Allocated memory was 44.6 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 26.7 MB in the beginning and 492.3 MB in the end (delta: -465.6 MB). Peak memory consumption was 818.4 MB. Max. memory is 14.3 GB. * Witness Printer took 84.53 ms. Allocated memory is still 1.3 GB. Free memory was 492.3 MB in the beginning and 485.9 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.3s, OverallIterations: 37, TraceHistogramMax: 1, AutomataDifference: 18.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4030 SDtfs, 5963 SDslu, 278 SDs, 0 SdLazy, 2828 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229386occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.6s AutomataMinimizationTime, 37 MinimizatonAttempts, 32772 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1131 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1094 ConstructedInterpolants, 0 QuantifiedInterpolants, 99116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 37 InterpolantComputations, 37 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...