./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_10.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 6423b7e5fbcc52c08e52aff49c79db620dd407c4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:23:20,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:23:20,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:23:20,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:23:20,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:23:20,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:23:20,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:23:20,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:23:20,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:23:20,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:23:20,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:23:20,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:23:20,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:23:20,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:23:20,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:23:20,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:23:20,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:23:20,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:23:20,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:23:20,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:23:20,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:23:20,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:23:20,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:23:20,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:23:20,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:23:20,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:23:20,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:23:20,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:23:20,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:23:20,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:23:20,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:23:20,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:23:20,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:23:20,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:23:20,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:23:20,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:23:20,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:23:20,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:23:20,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:23:20,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:23:20,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:23:20,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:23:20,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:23:20,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:23:20,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:23:20,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:23:20,907 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:23:20,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:23:20,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:23:20,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:23:20,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:23:20,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:23:20,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:23:20,909 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:23:20,910 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:23:20,910 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:23:20,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:23:20,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:23:20,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:23:20,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:23:20,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:23:20,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:23:20,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:23:20,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:23:20,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:20,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:23:20,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:23:20,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:23:20,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:23:20,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:23:20,914 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 -> 6423b7e5fbcc52c08e52aff49c79db620dd407c4 [2020-10-19 18:23:21,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:23:21,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:23:21,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:23:21,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:23:21,293 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:23:21,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_10.c [2020-10-19 18:23:21,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/675d1c2c5/09798be59c734a5fa5ca95b916b8fb07/FLAGa50275303 [2020-10-19 18:23:21,852 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:23:21,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c [2020-10-19 18:23:21,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/675d1c2c5/09798be59c734a5fa5ca95b916b8fb07/FLAGa50275303 [2020-10-19 18:23:22,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/675d1c2c5/09798be59c734a5fa5ca95b916b8fb07 [2020-10-19 18:23:22,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:23:22,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:23:22,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:22,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:23:22,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:23:22,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59994956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22, skipping insertion in model container [2020-10-19 18:23:22,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:23:22,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:23:22,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:22,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:23:22,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:22,514 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:23:22,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22 WrapperNode [2020-10-19 18:23:22,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:22,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:23:22,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:23:22,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:23:22,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (1/1) ... [2020-10-19 18:23:22,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:23:22,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:23:22,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:23:22,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:23:22,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:23:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:23:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:23:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:23:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:23:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:23:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:23:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:23:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:23:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:23:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:23:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:23:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:23:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:23:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:23:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:23:23,027 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:23:23,027 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 18:23:23,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:23 BoogieIcfgContainer [2020-10-19 18:23:23,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:23:23,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:23:23,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:23:23,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:23:23,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:23:22" (1/3) ... [2020-10-19 18:23:23,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cdfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:23, skipping insertion in model container [2020-10-19 18:23:23,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:22" (2/3) ... [2020-10-19 18:23:23,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cdfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:23, skipping insertion in model container [2020-10-19 18:23:23,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:23" (3/3) ... [2020-10-19 18:23:23,044 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-10-19 18:23:23,083 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:23:23,096 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:23:23,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:23:23,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:23:23,176 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:23:23,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:23:23,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:23:23,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:23:23,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:23:23,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:23:23,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:23:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-19 18:23:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:23:23,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:23,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:23,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:23,212 INFO L82 PathProgramCache]: Analyzing trace with hash -853069560, now seen corresponding path program 1 times [2020-10-19 18:23:23,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:23,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122858927] [2020-10-19 18:23:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:23,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122858927] [2020-10-19 18:23:23,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:23,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:23:23,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929292623] [2020-10-19 18:23:23,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:23:23,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:23,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:23:23,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:23,512 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-10-19 18:23:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:23,566 INFO L93 Difference]: Finished difference Result 46 states and 75 transitions. [2020-10-19 18:23:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:23:23,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-19 18:23:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:23,580 INFO L225 Difference]: With dead ends: 46 [2020-10-19 18:23:23,580 INFO L226 Difference]: Without dead ends: 41 [2020-10-19 18:23:23,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-19 18:23:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-19 18:23:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-19 18:23:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 70 transitions. [2020-10-19 18:23:23,627 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 70 transitions. Word has length 9 [2020-10-19 18:23:23,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:23,627 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 70 transitions. [2020-10-19 18:23:23,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:23:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 70 transitions. [2020-10-19 18:23:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:23:23,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:23,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:23,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:23:23,629 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:23,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:23,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1308951589, now seen corresponding path program 1 times [2020-10-19 18:23:23,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:23,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416772214] [2020-10-19 18:23:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:23,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416772214] [2020-10-19 18:23:23,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:23,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:23,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646597253] [2020-10-19 18:23:23,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:23,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:23,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:23,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:23,779 INFO L87 Difference]: Start difference. First operand 41 states and 70 transitions. Second operand 4 states. [2020-10-19 18:23:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:23,995 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-10-19 18:23:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:23,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-19 18:23:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:23,999 INFO L225 Difference]: With dead ends: 73 [2020-10-19 18:23:23,999 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 18:23:24,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:24,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 18:23:24,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2020-10-19 18:23:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-19 18:23:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-10-19 18:23:24,012 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 22 [2020-10-19 18:23:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:24,012 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-10-19 18:23:24,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-10-19 18:23:24,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:23:24,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:24,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:24,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:23:24,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:24,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1974898457, now seen corresponding path program 1 times [2020-10-19 18:23:24,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:24,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366640825] [2020-10-19 18:23:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:24,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366640825] [2020-10-19 18:23:24,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:24,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:24,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748073587] [2020-10-19 18:23:24,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:24,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:24,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:24,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:24,113 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 4 states. [2020-10-19 18:23:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:24,307 INFO L93 Difference]: Finished difference Result 73 states and 128 transitions. [2020-10-19 18:23:24,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:24,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-19 18:23:24,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:24,309 INFO L225 Difference]: With dead ends: 73 [2020-10-19 18:23:24,309 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 18:23:24,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:24,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 18:23:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-19 18:23:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:23:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 127 transitions. [2020-10-19 18:23:24,319 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 127 transitions. Word has length 22 [2020-10-19 18:23:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:24,319 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 127 transitions. [2020-10-19 18:23:24,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 127 transitions. [2020-10-19 18:23:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:23:24,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:24,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:24,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:23:24,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:24,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:24,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1916186131, now seen corresponding path program 1 times [2020-10-19 18:23:24,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:24,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462869081] [2020-10-19 18:23:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:24,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462869081] [2020-10-19 18:23:24,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:24,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:24,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350342772] [2020-10-19 18:23:24,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:24,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:24,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:24,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:24,441 INFO L87 Difference]: Start difference. First operand 72 states and 127 transitions. Second operand 4 states. [2020-10-19 18:23:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:24,610 INFO L93 Difference]: Finished difference Result 76 states and 130 transitions. [2020-10-19 18:23:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:24,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-19 18:23:24,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:24,613 INFO L225 Difference]: With dead ends: 76 [2020-10-19 18:23:24,613 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 18:23:24,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 18:23:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-19 18:23:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-19 18:23:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 129 transitions. [2020-10-19 18:23:24,622 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 129 transitions. Word has length 23 [2020-10-19 18:23:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:24,622 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 129 transitions. [2020-10-19 18:23:24,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 129 transitions. [2020-10-19 18:23:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:23:24,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:24,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:24,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:23:24,625 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1098917487, now seen corresponding path program 1 times [2020-10-19 18:23:24,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:24,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14383966] [2020-10-19 18:23:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:24,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14383966] [2020-10-19 18:23:24,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:24,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:24,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817983567] [2020-10-19 18:23:24,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:24,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:24,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:24,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:24,701 INFO L87 Difference]: Start difference. First operand 75 states and 129 transitions. Second operand 4 states. [2020-10-19 18:23:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:24,858 INFO L93 Difference]: Finished difference Result 137 states and 239 transitions. [2020-10-19 18:23:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:24,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-19 18:23:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:24,861 INFO L225 Difference]: With dead ends: 137 [2020-10-19 18:23:24,861 INFO L226 Difference]: Without dead ends: 137 [2020-10-19 18:23:24,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-19 18:23:24,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-10-19 18:23:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-19 18:23:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 238 transitions. [2020-10-19 18:23:24,873 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 238 transitions. Word has length 23 [2020-10-19 18:23:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:24,873 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 238 transitions. [2020-10-19 18:23:24,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 238 transitions. [2020-10-19 18:23:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:23:24,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:24,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:24,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:23:24,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:24,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2110034737, now seen corresponding path program 1 times [2020-10-19 18:23:24,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:24,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105309153] [2020-10-19 18:23:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:24,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105309153] [2020-10-19 18:23:24,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:24,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:24,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252181798] [2020-10-19 18:23:24,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:24,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:24,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:24,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:24,948 INFO L87 Difference]: Start difference. First operand 136 states and 238 transitions. Second operand 4 states. [2020-10-19 18:23:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:25,095 INFO L93 Difference]: Finished difference Result 173 states and 305 transitions. [2020-10-19 18:23:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:25,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-19 18:23:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:25,098 INFO L225 Difference]: With dead ends: 173 [2020-10-19 18:23:25,098 INFO L226 Difference]: Without dead ends: 173 [2020-10-19 18:23:25,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-19 18:23:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 136. [2020-10-19 18:23:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-19 18:23:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 236 transitions. [2020-10-19 18:23:25,108 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 236 transitions. Word has length 23 [2020-10-19 18:23:25,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:25,109 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 236 transitions. [2020-10-19 18:23:25,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:25,109 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 236 transitions. [2020-10-19 18:23:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:23:25,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:25,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:25,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:23:25,112 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:25,112 INFO L82 PathProgramCache]: Analyzing trace with hash -286678236, now seen corresponding path program 1 times [2020-10-19 18:23:25,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:25,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177039184] [2020-10-19 18:23:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:25,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177039184] [2020-10-19 18:23:25,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:25,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:25,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331176554] [2020-10-19 18:23:25,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:25,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:25,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:25,207 INFO L87 Difference]: Start difference. First operand 136 states and 236 transitions. Second operand 4 states. [2020-10-19 18:23:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:25,358 INFO L93 Difference]: Finished difference Result 249 states and 439 transitions. [2020-10-19 18:23:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:25,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-19 18:23:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:25,361 INFO L225 Difference]: With dead ends: 249 [2020-10-19 18:23:25,361 INFO L226 Difference]: Without dead ends: 249 [2020-10-19 18:23:25,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:25,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-19 18:23:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 184. [2020-10-19 18:23:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 18:23:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 318 transitions. [2020-10-19 18:23:25,372 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 318 transitions. Word has length 24 [2020-10-19 18:23:25,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:25,373 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 318 transitions. [2020-10-19 18:23:25,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:25,373 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 318 transitions. [2020-10-19 18:23:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:23:25,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:25,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:25,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:23:25,376 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:25,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1297795486, now seen corresponding path program 1 times [2020-10-19 18:23:25,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:25,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426032197] [2020-10-19 18:23:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:25,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426032197] [2020-10-19 18:23:25,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:25,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:25,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622361508] [2020-10-19 18:23:25,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:25,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:25,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:25,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:25,432 INFO L87 Difference]: Start difference. First operand 184 states and 318 transitions. Second operand 4 states. [2020-10-19 18:23:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:25,580 INFO L93 Difference]: Finished difference Result 257 states and 441 transitions. [2020-10-19 18:23:25,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:25,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-19 18:23:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:25,583 INFO L225 Difference]: With dead ends: 257 [2020-10-19 18:23:25,583 INFO L226 Difference]: Without dead ends: 257 [2020-10-19 18:23:25,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-19 18:23:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2020-10-19 18:23:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-19 18:23:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 440 transitions. [2020-10-19 18:23:25,595 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 440 transitions. Word has length 24 [2020-10-19 18:23:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:25,596 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 440 transitions. [2020-10-19 18:23:25,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 440 transitions. [2020-10-19 18:23:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:23:25,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:25,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:25,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:23:25,599 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:25,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:25,599 INFO L82 PathProgramCache]: Analyzing trace with hash -290462118, now seen corresponding path program 1 times [2020-10-19 18:23:25,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:25,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582253897] [2020-10-19 18:23:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:25,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582253897] [2020-10-19 18:23:25,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:25,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:25,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151407181] [2020-10-19 18:23:25,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:25,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:25,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:25,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:25,658 INFO L87 Difference]: Start difference. First operand 256 states and 440 transitions. Second operand 4 states. [2020-10-19 18:23:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:25,801 INFO L93 Difference]: Finished difference Result 263 states and 445 transitions. [2020-10-19 18:23:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:25,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-19 18:23:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:25,804 INFO L225 Difference]: With dead ends: 263 [2020-10-19 18:23:25,804 INFO L226 Difference]: Without dead ends: 263 [2020-10-19 18:23:25,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:25,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-19 18:23:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2020-10-19 18:23:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-19 18:23:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 444 transitions. [2020-10-19 18:23:25,812 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 444 transitions. Word has length 25 [2020-10-19 18:23:25,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:25,813 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 444 transitions. [2020-10-19 18:23:25,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:25,813 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 444 transitions. [2020-10-19 18:23:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:23:25,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:25,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:25,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:23:25,815 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:25,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1570325796, now seen corresponding path program 1 times [2020-10-19 18:23:25,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:25,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011991110] [2020-10-19 18:23:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:25,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011991110] [2020-10-19 18:23:25,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:25,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:25,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329694491] [2020-10-19 18:23:25,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:25,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:25,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:25,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:25,867 INFO L87 Difference]: Start difference. First operand 262 states and 444 transitions. Second operand 4 states. [2020-10-19 18:23:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:26,020 INFO L93 Difference]: Finished difference Result 475 states and 813 transitions. [2020-10-19 18:23:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:26,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-19 18:23:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:26,024 INFO L225 Difference]: With dead ends: 475 [2020-10-19 18:23:26,024 INFO L226 Difference]: Without dead ends: 475 [2020-10-19 18:23:26,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:26,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-19 18:23:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 362. [2020-10-19 18:23:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-19 18:23:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 604 transitions. [2020-10-19 18:23:26,035 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 604 transitions. Word has length 25 [2020-10-19 18:23:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:26,036 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 604 transitions. [2020-10-19 18:23:26,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 604 transitions. [2020-10-19 18:23:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:23:26,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:26,038 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] [2020-10-19 18:23:26,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:23:26,038 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:26,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:26,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1713524250, now seen corresponding path program 1 times [2020-10-19 18:23:26,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:26,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801606451] [2020-10-19 18:23:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:26,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801606451] [2020-10-19 18:23:26,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:26,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:26,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124039048] [2020-10-19 18:23:26,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:26,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:26,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:26,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:26,092 INFO L87 Difference]: Start difference. First operand 362 states and 604 transitions. Second operand 4 states. [2020-10-19 18:23:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:26,217 INFO L93 Difference]: Finished difference Result 499 states and 825 transitions. [2020-10-19 18:23:26,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:26,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-19 18:23:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:26,221 INFO L225 Difference]: With dead ends: 499 [2020-10-19 18:23:26,221 INFO L226 Difference]: Without dead ends: 499 [2020-10-19 18:23:26,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-19 18:23:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 498. [2020-10-19 18:23:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-19 18:23:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 824 transitions. [2020-10-19 18:23:26,234 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 824 transitions. Word has length 25 [2020-10-19 18:23:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:26,234 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 824 transitions. [2020-10-19 18:23:26,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 824 transitions. [2020-10-19 18:23:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:23:26,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:26,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:26,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:23:26,237 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:26,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1428820243, now seen corresponding path program 1 times [2020-10-19 18:23:26,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:26,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386071242] [2020-10-19 18:23:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:26,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386071242] [2020-10-19 18:23:26,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:26,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:26,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923054176] [2020-10-19 18:23:26,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:26,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:26,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:26,289 INFO L87 Difference]: Start difference. First operand 498 states and 824 transitions. Second operand 4 states. [2020-10-19 18:23:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:26,412 INFO L93 Difference]: Finished difference Result 507 states and 825 transitions. [2020-10-19 18:23:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:26,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-19 18:23:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:26,415 INFO L225 Difference]: With dead ends: 507 [2020-10-19 18:23:26,416 INFO L226 Difference]: Without dead ends: 507 [2020-10-19 18:23:26,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-19 18:23:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 506. [2020-10-19 18:23:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-19 18:23:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 824 transitions. [2020-10-19 18:23:26,429 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 824 transitions. Word has length 26 [2020-10-19 18:23:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:26,429 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 824 transitions. [2020-10-19 18:23:26,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 824 transitions. [2020-10-19 18:23:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:23:26,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:26,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:26,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:23:26,431 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1586283375, now seen corresponding path program 1 times [2020-10-19 18:23:26,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:26,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870578342] [2020-10-19 18:23:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:26,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870578342] [2020-10-19 18:23:26,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:26,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:26,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807547857] [2020-10-19 18:23:26,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:26,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:26,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:26,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:26,479 INFO L87 Difference]: Start difference. First operand 506 states and 824 transitions. Second operand 4 states. [2020-10-19 18:23:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:26,604 INFO L93 Difference]: Finished difference Result 907 states and 1489 transitions. [2020-10-19 18:23:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:26,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-19 18:23:26,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:26,610 INFO L225 Difference]: With dead ends: 907 [2020-10-19 18:23:26,610 INFO L226 Difference]: Without dead ends: 907 [2020-10-19 18:23:26,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:26,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-10-19 18:23:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 714. [2020-10-19 18:23:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-10-19 18:23:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1136 transitions. [2020-10-19 18:23:26,627 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1136 transitions. Word has length 26 [2020-10-19 18:23:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:26,628 INFO L481 AbstractCegarLoop]: Abstraction has 714 states and 1136 transitions. [2020-10-19 18:23:26,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1136 transitions. [2020-10-19 18:23:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:23:26,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:26,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:26,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:23:26,631 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:26,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:26,631 INFO L82 PathProgramCache]: Analyzing trace with hash 575166125, now seen corresponding path program 1 times [2020-10-19 18:23:26,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:26,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209388625] [2020-10-19 18:23:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:26,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209388625] [2020-10-19 18:23:26,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:26,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:26,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485457949] [2020-10-19 18:23:26,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:26,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:26,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:26,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:26,676 INFO L87 Difference]: Start difference. First operand 714 states and 1136 transitions. Second operand 4 states. [2020-10-19 18:23:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:26,808 INFO L93 Difference]: Finished difference Result 971 states and 1529 transitions. [2020-10-19 18:23:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:26,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-19 18:23:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:26,814 INFO L225 Difference]: With dead ends: 971 [2020-10-19 18:23:26,815 INFO L226 Difference]: Without dead ends: 971 [2020-10-19 18:23:26,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-19 18:23:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 970. [2020-10-19 18:23:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-19 18:23:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1528 transitions. [2020-10-19 18:23:26,838 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1528 transitions. Word has length 26 [2020-10-19 18:23:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:26,839 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1528 transitions. [2020-10-19 18:23:26,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1528 transitions. [2020-10-19 18:23:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:26,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:26,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:26,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:23:26,842 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1936794117, now seen corresponding path program 1 times [2020-10-19 18:23:26,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:26,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490838283] [2020-10-19 18:23:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:26,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490838283] [2020-10-19 18:23:26,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:26,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:26,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361351339] [2020-10-19 18:23:26,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:26,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:26,891 INFO L87 Difference]: Start difference. First operand 970 states and 1528 transitions. Second operand 4 states. [2020-10-19 18:23:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:27,019 INFO L93 Difference]: Finished difference Result 987 states and 1529 transitions. [2020-10-19 18:23:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:27,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:27,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:27,025 INFO L225 Difference]: With dead ends: 987 [2020-10-19 18:23:27,025 INFO L226 Difference]: Without dead ends: 987 [2020-10-19 18:23:27,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:27,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-10-19 18:23:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 986. [2020-10-19 18:23:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-19 18:23:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1528 transitions. [2020-10-19 18:23:27,046 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1528 transitions. Word has length 27 [2020-10-19 18:23:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:27,046 INFO L481 AbstractCegarLoop]: Abstraction has 986 states and 1528 transitions. [2020-10-19 18:23:27,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1528 transitions. [2020-10-19 18:23:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:27,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:27,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:27,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:23:27,049 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash 656930439, now seen corresponding path program 1 times [2020-10-19 18:23:27,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:27,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764961674] [2020-10-19 18:23:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:27,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764961674] [2020-10-19 18:23:27,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:27,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:27,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789816987] [2020-10-19 18:23:27,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:27,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:27,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:27,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:27,097 INFO L87 Difference]: Start difference. First operand 986 states and 1528 transitions. Second operand 4 states. [2020-10-19 18:23:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:27,229 INFO L93 Difference]: Finished difference Result 1739 states and 2713 transitions. [2020-10-19 18:23:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:27,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:27,239 INFO L225 Difference]: With dead ends: 1739 [2020-10-19 18:23:27,239 INFO L226 Difference]: Without dead ends: 1739 [2020-10-19 18:23:27,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2020-10-19 18:23:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1418. [2020-10-19 18:23:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-10-19 18:23:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2136 transitions. [2020-10-19 18:23:27,271 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2136 transitions. Word has length 27 [2020-10-19 18:23:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:27,272 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 2136 transitions. [2020-10-19 18:23:27,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2136 transitions. [2020-10-19 18:23:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:27,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:27,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:27,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:23:27,275 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:27,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:27,276 INFO L82 PathProgramCache]: Analyzing trace with hash -354186811, now seen corresponding path program 1 times [2020-10-19 18:23:27,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:27,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802609257] [2020-10-19 18:23:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:27,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802609257] [2020-10-19 18:23:27,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:27,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:27,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777534514] [2020-10-19 18:23:27,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:27,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:27,322 INFO L87 Difference]: Start difference. First operand 1418 states and 2136 transitions. Second operand 4 states. [2020-10-19 18:23:27,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:27,452 INFO L93 Difference]: Finished difference Result 1899 states and 2825 transitions. [2020-10-19 18:23:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:27,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:27,462 INFO L225 Difference]: With dead ends: 1899 [2020-10-19 18:23:27,463 INFO L226 Difference]: Without dead ends: 1899 [2020-10-19 18:23:27,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-19 18:23:27,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1898. [2020-10-19 18:23:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-10-19 18:23:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2824 transitions. [2020-10-19 18:23:27,514 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2824 transitions. Word has length 27 [2020-10-19 18:23:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:27,514 INFO L481 AbstractCegarLoop]: Abstraction has 1898 states and 2824 transitions. [2020-10-19 18:23:27,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2824 transitions. [2020-10-19 18:23:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:27,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:27,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:27,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:23:27,518 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:27,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:27,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1103332552, now seen corresponding path program 1 times [2020-10-19 18:23:27,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:27,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499384188] [2020-10-19 18:23:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:27,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499384188] [2020-10-19 18:23:27,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:27,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:27,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894162460] [2020-10-19 18:23:27,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:27,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:27,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:27,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:27,569 INFO L87 Difference]: Start difference. First operand 1898 states and 2824 transitions. Second operand 4 states. [2020-10-19 18:23:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:27,705 INFO L93 Difference]: Finished difference Result 1931 states and 2825 transitions. [2020-10-19 18:23:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:27,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-19 18:23:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:27,714 INFO L225 Difference]: With dead ends: 1931 [2020-10-19 18:23:27,715 INFO L226 Difference]: Without dead ends: 1931 [2020-10-19 18:23:27,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2020-10-19 18:23:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1930. [2020-10-19 18:23:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-19 18:23:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2824 transitions. [2020-10-19 18:23:27,775 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2824 transitions. Word has length 28 [2020-10-19 18:23:27,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:27,776 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2824 transitions. [2020-10-19 18:23:27,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2824 transitions. [2020-10-19 18:23:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:27,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:27,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:27,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:23:27,780 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:27,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1911771066, now seen corresponding path program 1 times [2020-10-19 18:23:27,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:27,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987821852] [2020-10-19 18:23:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:27,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987821852] [2020-10-19 18:23:27,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:27,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:27,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530779128] [2020-10-19 18:23:27,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:27,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:27,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:27,822 INFO L87 Difference]: Start difference. First operand 1930 states and 2824 transitions. Second operand 4 states. [2020-10-19 18:23:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:27,985 INFO L93 Difference]: Finished difference Result 3339 states and 4905 transitions. [2020-10-19 18:23:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:27,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-19 18:23:27,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:28,001 INFO L225 Difference]: With dead ends: 3339 [2020-10-19 18:23:28,002 INFO L226 Difference]: Without dead ends: 3339 [2020-10-19 18:23:28,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2020-10-19 18:23:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2826. [2020-10-19 18:23:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-10-19 18:23:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4008 transitions. [2020-10-19 18:23:28,068 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4008 transitions. Word has length 28 [2020-10-19 18:23:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:28,068 INFO L481 AbstractCegarLoop]: Abstraction has 2826 states and 4008 transitions. [2020-10-19 18:23:28,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4008 transitions. [2020-10-19 18:23:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:28,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:28,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:28,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:23:28,073 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:28,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:28,073 INFO L82 PathProgramCache]: Analyzing trace with hash 900653816, now seen corresponding path program 1 times [2020-10-19 18:23:28,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:28,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845571144] [2020-10-19 18:23:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:28,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845571144] [2020-10-19 18:23:28,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:28,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:28,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88848692] [2020-10-19 18:23:28,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:28,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:28,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:28,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:28,116 INFO L87 Difference]: Start difference. First operand 2826 states and 4008 transitions. Second operand 4 states. [2020-10-19 18:23:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:28,270 INFO L93 Difference]: Finished difference Result 3723 states and 5193 transitions. [2020-10-19 18:23:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:28,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-19 18:23:28,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:28,292 INFO L225 Difference]: With dead ends: 3723 [2020-10-19 18:23:28,292 INFO L226 Difference]: Without dead ends: 3723 [2020-10-19 18:23:28,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2020-10-19 18:23:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3722. [2020-10-19 18:23:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-10-19 18:23:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5192 transitions. [2020-10-19 18:23:28,375 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5192 transitions. Word has length 28 [2020-10-19 18:23:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:28,375 INFO L481 AbstractCegarLoop]: Abstraction has 3722 states and 5192 transitions. [2020-10-19 18:23:28,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5192 transitions. [2020-10-19 18:23:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:28,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:28,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:28,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 18:23:28,381 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash -857968208, now seen corresponding path program 1 times [2020-10-19 18:23:28,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:28,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867826241] [2020-10-19 18:23:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:28,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867826241] [2020-10-19 18:23:28,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:28,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:28,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790138899] [2020-10-19 18:23:28,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:28,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:28,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:28,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:28,422 INFO L87 Difference]: Start difference. First operand 3722 states and 5192 transitions. Second operand 4 states. [2020-10-19 18:23:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:28,548 INFO L93 Difference]: Finished difference Result 3787 states and 5193 transitions. [2020-10-19 18:23:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:28,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:28,566 INFO L225 Difference]: With dead ends: 3787 [2020-10-19 18:23:28,566 INFO L226 Difference]: Without dead ends: 3787 [2020-10-19 18:23:28,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2020-10-19 18:23:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3786. [2020-10-19 18:23:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3786 states. [2020-10-19 18:23:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3786 states to 3786 states and 5192 transitions. [2020-10-19 18:23:28,633 INFO L78 Accepts]: Start accepts. Automaton has 3786 states and 5192 transitions. Word has length 29 [2020-10-19 18:23:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:28,633 INFO L481 AbstractCegarLoop]: Abstraction has 3786 states and 5192 transitions. [2020-10-19 18:23:28,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3786 states and 5192 transitions. [2020-10-19 18:23:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:28,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:28,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:28,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 18:23:28,639 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:28,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2137831886, now seen corresponding path program 1 times [2020-10-19 18:23:28,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:28,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160899980] [2020-10-19 18:23:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:28,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160899980] [2020-10-19 18:23:28,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:28,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:28,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999832578] [2020-10-19 18:23:28,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:28,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:28,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:28,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:28,680 INFO L87 Difference]: Start difference. First operand 3786 states and 5192 transitions. Second operand 4 states. [2020-10-19 18:23:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:28,823 INFO L93 Difference]: Finished difference Result 6411 states and 8777 transitions. [2020-10-19 18:23:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:28,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:28,849 INFO L225 Difference]: With dead ends: 6411 [2020-10-19 18:23:28,849 INFO L226 Difference]: Without dead ends: 6411 [2020-10-19 18:23:28,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2020-10-19 18:23:28,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5642. [2020-10-19 18:23:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5642 states. [2020-10-19 18:23:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 7496 transitions. [2020-10-19 18:23:28,936 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 7496 transitions. Word has length 29 [2020-10-19 18:23:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:28,936 INFO L481 AbstractCegarLoop]: Abstraction has 5642 states and 7496 transitions. [2020-10-19 18:23:28,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 7496 transitions. [2020-10-19 18:23:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:28,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:28,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:28,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 18:23:28,945 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:28,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:28,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1146018160, now seen corresponding path program 1 times [2020-10-19 18:23:28,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:28,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826542906] [2020-10-19 18:23:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:28,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826542906] [2020-10-19 18:23:28,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:28,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:28,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92099275] [2020-10-19 18:23:28,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:28,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:28,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:28,984 INFO L87 Difference]: Start difference. First operand 5642 states and 7496 transitions. Second operand 4 states. [2020-10-19 18:23:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:29,118 INFO L93 Difference]: Finished difference Result 7307 states and 9481 transitions. [2020-10-19 18:23:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:29,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-19 18:23:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:29,133 INFO L225 Difference]: With dead ends: 7307 [2020-10-19 18:23:29,133 INFO L226 Difference]: Without dead ends: 7307 [2020-10-19 18:23:29,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7307 states. [2020-10-19 18:23:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7307 to 7306. [2020-10-19 18:23:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2020-10-19 18:23:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9480 transitions. [2020-10-19 18:23:29,232 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9480 transitions. Word has length 29 [2020-10-19 18:23:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:29,233 INFO L481 AbstractCegarLoop]: Abstraction has 7306 states and 9480 transitions. [2020-10-19 18:23:29,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9480 transitions. [2020-10-19 18:23:29,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:29,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:29,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:29,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 18:23:29,243 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:29,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1841597565, now seen corresponding path program 1 times [2020-10-19 18:23:29,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:29,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494649825] [2020-10-19 18:23:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:29,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494649825] [2020-10-19 18:23:29,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:29,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:29,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409756631] [2020-10-19 18:23:29,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:29,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:29,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:29,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:29,311 INFO L87 Difference]: Start difference. First operand 7306 states and 9480 transitions. Second operand 4 states. [2020-10-19 18:23:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:29,443 INFO L93 Difference]: Finished difference Result 7435 states and 9481 transitions. [2020-10-19 18:23:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:29,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:29,458 INFO L225 Difference]: With dead ends: 7435 [2020-10-19 18:23:29,459 INFO L226 Difference]: Without dead ends: 7435 [2020-10-19 18:23:29,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:29,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2020-10-19 18:23:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7434. [2020-10-19 18:23:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7434 states. [2020-10-19 18:23:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7434 states to 7434 states and 9480 transitions. [2020-10-19 18:23:29,623 INFO L78 Accepts]: Start accepts. Automaton has 7434 states and 9480 transitions. Word has length 30 [2020-10-19 18:23:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:29,624 INFO L481 AbstractCegarLoop]: Abstraction has 7434 states and 9480 transitions. [2020-10-19 18:23:29,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 7434 states and 9480 transitions. [2020-10-19 18:23:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:29,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:29,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:29,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 18:23:29,633 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1173506053, now seen corresponding path program 1 times [2020-10-19 18:23:29,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:29,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552367140] [2020-10-19 18:23:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:29,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552367140] [2020-10-19 18:23:29,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:29,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:29,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453893754] [2020-10-19 18:23:29,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:29,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:29,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:29,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:29,685 INFO L87 Difference]: Start difference. First operand 7434 states and 9480 transitions. Second operand 4 states. [2020-10-19 18:23:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:29,818 INFO L93 Difference]: Finished difference Result 12299 states and 15497 transitions. [2020-10-19 18:23:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:29,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:29,840 INFO L225 Difference]: With dead ends: 12299 [2020-10-19 18:23:29,840 INFO L226 Difference]: Without dead ends: 12299 [2020-10-19 18:23:29,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:29,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12299 states. [2020-10-19 18:23:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12299 to 11274. [2020-10-19 18:23:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11274 states. [2020-10-19 18:23:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11274 states to 11274 states and 13960 transitions. [2020-10-19 18:23:29,986 INFO L78 Accepts]: Start accepts. Automaton has 11274 states and 13960 transitions. Word has length 30 [2020-10-19 18:23:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:29,987 INFO L481 AbstractCegarLoop]: Abstraction has 11274 states and 13960 transitions. [2020-10-19 18:23:29,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 11274 states and 13960 transitions. [2020-10-19 18:23:30,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:23:30,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:30,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:30,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 18:23:30,003 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:30,004 INFO L82 PathProgramCache]: Analyzing trace with hash 162388803, now seen corresponding path program 1 times [2020-10-19 18:23:30,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:30,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147148959] [2020-10-19 18:23:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:30,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147148959] [2020-10-19 18:23:30,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:30,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:30,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938246109] [2020-10-19 18:23:30,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:30,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:30,047 INFO L87 Difference]: Start difference. First operand 11274 states and 13960 transitions. Second operand 4 states. [2020-10-19 18:23:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:30,189 INFO L93 Difference]: Finished difference Result 14347 states and 17161 transitions. [2020-10-19 18:23:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:30,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 18:23:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:30,211 INFO L225 Difference]: With dead ends: 14347 [2020-10-19 18:23:30,212 INFO L226 Difference]: Without dead ends: 14347 [2020-10-19 18:23:30,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14347 states. [2020-10-19 18:23:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14347 to 14346. [2020-10-19 18:23:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14346 states. [2020-10-19 18:23:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14346 states to 14346 states and 17160 transitions. [2020-10-19 18:23:30,412 INFO L78 Accepts]: Start accepts. Automaton has 14346 states and 17160 transitions. Word has length 30 [2020-10-19 18:23:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:30,412 INFO L481 AbstractCegarLoop]: Abstraction has 14346 states and 17160 transitions. [2020-10-19 18:23:30,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 14346 states and 17160 transitions. [2020-10-19 18:23:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:30,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:30,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:30,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 18:23:30,436 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:30,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:30,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2025641307, now seen corresponding path program 1 times [2020-10-19 18:23:30,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:30,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869808687] [2020-10-19 18:23:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:30,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869808687] [2020-10-19 18:23:30,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:30,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:30,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929019734] [2020-10-19 18:23:30,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:30,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:30,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:30,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:30,488 INFO L87 Difference]: Start difference. First operand 14346 states and 17160 transitions. Second operand 4 states. [2020-10-19 18:23:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:30,665 INFO L93 Difference]: Finished difference Result 14603 states and 17161 transitions. [2020-10-19 18:23:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:30,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:30,692 INFO L225 Difference]: With dead ends: 14603 [2020-10-19 18:23:30,692 INFO L226 Difference]: Without dead ends: 14603 [2020-10-19 18:23:30,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14603 states. [2020-10-19 18:23:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14603 to 14602. [2020-10-19 18:23:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14602 states. [2020-10-19 18:23:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14602 states to 14602 states and 17160 transitions. [2020-10-19 18:23:30,879 INFO L78 Accepts]: Start accepts. Automaton has 14602 states and 17160 transitions. Word has length 31 [2020-10-19 18:23:30,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:30,879 INFO L481 AbstractCegarLoop]: Abstraction has 14602 states and 17160 transitions. [2020-10-19 18:23:30,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:30,879 INFO L276 IsEmpty]: Start isEmpty. Operand 14602 states and 17160 transitions. [2020-10-19 18:23:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:30,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:30,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:30,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 18:23:30,897 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:30,897 INFO L82 PathProgramCache]: Analyzing trace with hash 745777629, now seen corresponding path program 1 times [2020-10-19 18:23:30,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:30,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405147398] [2020-10-19 18:23:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:31,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405147398] [2020-10-19 18:23:31,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:31,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:31,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086058968] [2020-10-19 18:23:31,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:31,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:31,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:31,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:31,033 INFO L87 Difference]: Start difference. First operand 14602 states and 17160 transitions. Second operand 4 states. [2020-10-19 18:23:31,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:31,194 INFO L93 Difference]: Finished difference Result 28170 states and 31240 transitions. [2020-10-19 18:23:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:31,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:31,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:31,230 INFO L225 Difference]: With dead ends: 28170 [2020-10-19 18:23:31,231 INFO L226 Difference]: Without dead ends: 14602 [2020-10-19 18:23:31,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14602 states. [2020-10-19 18:23:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14602 to 14602. [2020-10-19 18:23:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14602 states. [2020-10-19 18:23:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14602 states to 14602 states and 16136 transitions. [2020-10-19 18:23:31,423 INFO L78 Accepts]: Start accepts. Automaton has 14602 states and 16136 transitions. Word has length 31 [2020-10-19 18:23:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:31,424 INFO L481 AbstractCegarLoop]: Abstraction has 14602 states and 16136 transitions. [2020-10-19 18:23:31,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 14602 states and 16136 transitions. [2020-10-19 18:23:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:23:31,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:31,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:31,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 18:23:31,437 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1756894879, now seen corresponding path program 1 times [2020-10-19 18:23:31,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:31,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550192688] [2020-10-19 18:23:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:31,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550192688] [2020-10-19 18:23:31,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:31,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:31,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038276459] [2020-10-19 18:23:31,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:31,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:31,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:31,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:31,480 INFO L87 Difference]: Start difference. First operand 14602 states and 16136 transitions. Second operand 4 states. [2020-10-19 18:23:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:31,567 INFO L93 Difference]: Finished difference Result 14599 states and 15622 transitions. [2020-10-19 18:23:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:31,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 18:23:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:31,567 INFO L225 Difference]: With dead ends: 14599 [2020-10-19 18:23:31,568 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:23:31,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:23:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:23:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:23:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:23:31,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-10-19 18:23:31,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:31,569 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:23:31,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:23:31,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:23:31,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 18:23:31,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:23:31 BoogieIcfgContainer [2020-10-19 18:23:31,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:23:31,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:23:31,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:23:31,575 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:23:31,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:23" (3/4) ... [2020-10-19 18:23:31,579 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:23:31,587 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-19 18:23:31,588 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:23:31,588 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:23:31,594 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-19 18:23:31,595 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 18:23:31,595 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:23:31,595 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:23:31,663 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:23:31,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:23:31,666 INFO L168 Benchmark]: Toolchain (without parser) took 9463.00 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 421.0 MB). Free memory was 953.2 MB in the beginning and 1.2 GB in the end (delta: -204.4 MB). Peak memory consumption was 216.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:31,667 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:23:31,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.75 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:31,668 INFO L168 Benchmark]: Boogie Preprocessor took 107.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:31,668 INFO L168 Benchmark]: RCFGBuilder took 405.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:31,669 INFO L168 Benchmark]: TraceAbstraction took 8544.05 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 289.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.8 MB). Peak memory consumption was 213.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:31,672 INFO L168 Benchmark]: Witness Printer took 88.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:31,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.75 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 107.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 405.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8544.05 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 289.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.8 MB). Peak memory consumption was 213.2 MB. Max. memory is 11.5 GB. * Witness Printer took 88.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 50 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.3s, OverallIterations: 29, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2450 SDtfs, 3578 SDslu, 216 SDs, 0 SdLazy, 1705 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14602occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 29 MinimizatonAttempts, 3074 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 758 NumberOfCodeBlocks, 758 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 729 ConstructedInterpolants, 0 QuantifiedInterpolants, 57759 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...