./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_12.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 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:19:50,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:19:50,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:19:50,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:19:50,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:19:50,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:19:50,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:19:50,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:19:50,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:19:50,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:19:50,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:19:50,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:19:50,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:19:50,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:19:50,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:19:50,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:19:50,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:19:50,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:19:50,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:19:50,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:19:50,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:19:50,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:19:50,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:19:50,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:19:50,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:19:50,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:19:50,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:19:50,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:19:50,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:19:50,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:19:50,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:19:50,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:19:50,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:19:50,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:19:50,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:19:50,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:19:50,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:19:50,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:19:50,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:19:50,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:19:50,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:19:50,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:19:50,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:19:50,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:19:50,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:19:50,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:19:50,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:19:50,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:19:50,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:19:50,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:19:50,714 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:19:50,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:19:50,715 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:19:50,715 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:19:50,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:19:50,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:19:50,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:19:50,716 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:19:50,716 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:19:50,716 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:19:50,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:19:50,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:19:50,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:19:50,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:19:50,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:19:50,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:19:50,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:19:50,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:19:50,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:19:50,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:19:50,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:19:50,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:19:50,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:19:50,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2021-12-22 00:19:50,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:19:50,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:19:50,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:19:50,957 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:19:50,958 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:19:50,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_12.c [2021-12-22 00:19:51,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10d46de3/639a3e9a17e44820aec631fb05959c52/FLAGcc3c8925a [2021-12-22 00:19:51,349 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:19:51,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c [2021-12-22 00:19:51,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10d46de3/639a3e9a17e44820aec631fb05959c52/FLAGcc3c8925a [2021-12-22 00:19:51,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10d46de3/639a3e9a17e44820aec631fb05959c52 [2021-12-22 00:19:51,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:19:51,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:19:51,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:19:51,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:19:51,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:19:51,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:19:51" (1/1) ... [2021-12-22 00:19:51,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b106b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:51, skipping insertion in model container [2021-12-22 00:19:51,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:19:51" (1/1) ... [2021-12-22 00:19:51,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:19:51,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:19:51,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-12-22 00:19:51,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:19:51,999 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:19:52,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-12-22 00:19:52,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:19:52,028 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:19:52,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52 WrapperNode [2021-12-22 00:19:52,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:19:52,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:19:52,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:19:52,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:19:52,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,056 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 160 [2021-12-22 00:19:52,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:19:52,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:19:52,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:19:52,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:19:52,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:19:52,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:19:52,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:19:52,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:19:52,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (1/1) ... [2021-12-22 00:19:52,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:19:52,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:19:52,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 00:19:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:19:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:19:52,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:19:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 00:19:52,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 00:19:52,225 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:19:52,226 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:19:52,462 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:19:52,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:19:52,468 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 00:19:52,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:19:52 BoogieIcfgContainer [2021-12-22 00:19:52,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:19:52,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:19:52,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:19:52,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:19:52,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:19:51" (1/3) ... [2021-12-22 00:19:52,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6633bac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:19:52, skipping insertion in model container [2021-12-22 00:19:52,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:19:52" (2/3) ... [2021-12-22 00:19:52,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6633bac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:19:52, skipping insertion in model container [2021-12-22 00:19:52,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:19:52" (3/3) ... [2021-12-22 00:19:52,478 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2021-12-22 00:19:52,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:19:52,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 00:19:52,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:19:52,547 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 00:19:52,547 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 00:19:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 46 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:52,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 00:19:52,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:52,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 00:19:52,565 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:52,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash 28704555, now seen corresponding path program 1 times [2021-12-22 00:19:52,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:52,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026256726] [2021-12-22 00:19:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:52,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:52,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:52,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026256726] [2021-12-22 00:19:52,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026256726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:52,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:52,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:19:52,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031786099] [2021-12-22 00:19:52,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:52,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 00:19:52,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:52,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 00:19:52,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 00:19:52,753 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 46 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:52,771 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2021-12-22 00:19:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 00:19:52,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-22 00:19:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:52,780 INFO L225 Difference]: With dead ends: 47 [2021-12-22 00:19:52,780 INFO L226 Difference]: Without dead ends: 45 [2021-12-22 00:19:52,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 00:19:52,788 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:52,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-22 00:19:52,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-22 00:19:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 44 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 80 transitions. [2021-12-22 00:19:52,822 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 80 transitions. Word has length 5 [2021-12-22 00:19:52,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:52,823 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 80 transitions. [2021-12-22 00:19:52,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 80 transitions. [2021-12-22 00:19:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 00:19:52,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:52,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 00:19:52,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 00:19:52,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:52,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash 889699051, now seen corresponding path program 1 times [2021-12-22 00:19:52,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:52,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062284680] [2021-12-22 00:19:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:52,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:52,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:52,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062284680] [2021-12-22 00:19:52,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062284680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:52,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:52,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:19:52,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112918] [2021-12-22 00:19:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:52,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:52,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:52,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:52,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:52,907 INFO L87 Difference]: Start difference. First operand 45 states and 80 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:52,916 INFO L93 Difference]: Finished difference Result 44 states and 79 transitions. [2021-12-22 00:19:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:52,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-22 00:19:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:52,918 INFO L225 Difference]: With dead ends: 44 [2021-12-22 00:19:52,918 INFO L226 Difference]: Without dead ends: 42 [2021-12-22 00:19:52,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:52,919 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:52,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:52,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-22 00:19:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-12-22 00:19:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 41 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 77 transitions. [2021-12-22 00:19:52,925 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 77 transitions. Word has length 6 [2021-12-22 00:19:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:52,925 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 77 transitions. [2021-12-22 00:19:52,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 77 transitions. [2021-12-22 00:19:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 00:19:52,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:52,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:52,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 00:19:52,927 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:52,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1341605783, now seen corresponding path program 1 times [2021-12-22 00:19:52,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:52,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051526661] [2021-12-22 00:19:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:52,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:52,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:52,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051526661] [2021-12-22 00:19:52,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051526661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:52,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:52,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:52,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66820623] [2021-12-22 00:19:52,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:52,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:52,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:52,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:52,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:52,992 INFO L87 Difference]: Start difference. First operand 42 states and 77 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,021 INFO L93 Difference]: Finished difference Result 81 states and 149 transitions. [2021-12-22 00:19:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-22 00:19:53,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,026 INFO L225 Difference]: With dead ends: 81 [2021-12-22 00:19:53,026 INFO L226 Difference]: Without dead ends: 81 [2021-12-22 00:19:53,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,028 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 58 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-22 00:19:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2021-12-22 00:19:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 102 transitions. [2021-12-22 00:19:53,044 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 102 transitions. Word has length 19 [2021-12-22 00:19:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,045 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 102 transitions. [2021-12-22 00:19:53,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 102 transitions. [2021-12-22 00:19:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 00:19:53,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:53,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 00:19:53,047 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash 61742105, now seen corresponding path program 1 times [2021-12-22 00:19:53,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526663651] [2021-12-22 00:19:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526663651] [2021-12-22 00:19:53,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526663651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506208434] [2021-12-22 00:19:53,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,120 INFO L87 Difference]: Start difference. First operand 55 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,149 INFO L93 Difference]: Finished difference Result 81 states and 147 transitions. [2021-12-22 00:19:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-22 00:19:53,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,151 INFO L225 Difference]: With dead ends: 81 [2021-12-22 00:19:53,151 INFO L226 Difference]: Without dead ends: 81 [2021-12-22 00:19:53,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,153 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 58 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 171 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-22 00:19:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-12-22 00:19:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.8717948717948718) internal successors, (146), 78 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 146 transitions. [2021-12-22 00:19:53,166 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 146 transitions. Word has length 19 [2021-12-22 00:19:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,167 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 146 transitions. [2021-12-22 00:19:53,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 146 transitions. [2021-12-22 00:19:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 00:19:53,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:53,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 00:19:53,169 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1359680987, now seen corresponding path program 1 times [2021-12-22 00:19:53,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360325526] [2021-12-22 00:19:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360325526] [2021-12-22 00:19:53,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360325526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800149096] [2021-12-22 00:19:53,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,215 INFO L87 Difference]: Start difference. First operand 79 states and 146 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,236 INFO L93 Difference]: Finished difference Result 84 states and 149 transitions. [2021-12-22 00:19:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 00:19:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,237 INFO L225 Difference]: With dead ends: 84 [2021-12-22 00:19:53,238 INFO L226 Difference]: Without dead ends: 84 [2021-12-22 00:19:53,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,240 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 60 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-22 00:19:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-12-22 00:19:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.8271604938271604) internal successors, (148), 81 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 148 transitions. [2021-12-22 00:19:53,250 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 148 transitions. Word has length 20 [2021-12-22 00:19:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,251 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 148 transitions. [2021-12-22 00:19:53,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 148 transitions. [2021-12-22 00:19:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 00:19:53,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:53,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 00:19:53,253 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1914217955, now seen corresponding path program 1 times [2021-12-22 00:19:53,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293783855] [2021-12-22 00:19:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293783855] [2021-12-22 00:19:53,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293783855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496899632] [2021-12-22 00:19:53,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,285 INFO L87 Difference]: Start difference. First operand 82 states and 148 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,296 INFO L93 Difference]: Finished difference Result 155 states and 282 transitions. [2021-12-22 00:19:53,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 00:19:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,297 INFO L225 Difference]: With dead ends: 155 [2021-12-22 00:19:53,298 INFO L226 Difference]: Without dead ends: 155 [2021-12-22 00:19:53,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,299 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 55 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-22 00:19:53,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2021-12-22 00:19:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.8240740740740742) internal successors, (197), 108 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 197 transitions. [2021-12-22 00:19:53,306 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 197 transitions. Word has length 20 [2021-12-22 00:19:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,306 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 197 transitions. [2021-12-22 00:19:53,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 197 transitions. [2021-12-22 00:19:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 00:19:53,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:53,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 00:19:53,308 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash 634354277, now seen corresponding path program 1 times [2021-12-22 00:19:53,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884315113] [2021-12-22 00:19:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884315113] [2021-12-22 00:19:53,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884315113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326088759] [2021-12-22 00:19:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,358 INFO L87 Difference]: Start difference. First operand 109 states and 197 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,383 INFO L93 Difference]: Finished difference Result 157 states and 280 transitions. [2021-12-22 00:19:53,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 00:19:53,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,389 INFO L225 Difference]: With dead ends: 157 [2021-12-22 00:19:53,389 INFO L226 Difference]: Without dead ends: 157 [2021-12-22 00:19:53,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,390 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-22 00:19:53,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2021-12-22 00:19:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.8116883116883118) internal successors, (279), 154 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 279 transitions. [2021-12-22 00:19:53,405 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 279 transitions. Word has length 20 [2021-12-22 00:19:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,405 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 279 transitions. [2021-12-22 00:19:53,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 279 transitions. [2021-12-22 00:19:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 00:19:53,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:53,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 00:19:53,407 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash -788572498, now seen corresponding path program 1 times [2021-12-22 00:19:53,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894857560] [2021-12-22 00:19:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894857560] [2021-12-22 00:19:53,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894857560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275678561] [2021-12-22 00:19:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,437 INFO L87 Difference]: Start difference. First operand 155 states and 279 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,446 INFO L93 Difference]: Finished difference Result 159 states and 280 transitions. [2021-12-22 00:19:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-22 00:19:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,447 INFO L225 Difference]: With dead ends: 159 [2021-12-22 00:19:53,447 INFO L226 Difference]: Without dead ends: 159 [2021-12-22 00:19:53,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,448 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 59 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-22 00:19:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2021-12-22 00:19:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.7884615384615385) internal successors, (279), 156 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2021-12-22 00:19:53,455 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 21 [2021-12-22 00:19:53,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,455 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2021-12-22 00:19:53,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2021-12-22 00:19:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 00:19:53,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:53,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 00:19:53,457 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1809640852, now seen corresponding path program 1 times [2021-12-22 00:19:53,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117379115] [2021-12-22 00:19:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117379115] [2021-12-22 00:19:53,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117379115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033293871] [2021-12-22 00:19:53,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,485 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,501 INFO L93 Difference]: Finished difference Result 303 states and 532 transitions. [2021-12-22 00:19:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-22 00:19:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,504 INFO L225 Difference]: With dead ends: 303 [2021-12-22 00:19:53,504 INFO L226 Difference]: Without dead ends: 303 [2021-12-22 00:19:53,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,505 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-22 00:19:53,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2021-12-22 00:19:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.77) internal successors, (531), 300 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 531 transitions. [2021-12-22 00:19:53,524 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 531 transitions. Word has length 21 [2021-12-22 00:19:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,524 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 531 transitions. [2021-12-22 00:19:53,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 531 transitions. [2021-12-22 00:19:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 00:19:53,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:19:53,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 00:19:53,529 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash -529777174, now seen corresponding path program 1 times [2021-12-22 00:19:53,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281875885] [2021-12-22 00:19:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281875885] [2021-12-22 00:19:53,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281875885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535951528] [2021-12-22 00:19:53,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,565 INFO L87 Difference]: Start difference. First operand 301 states and 531 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,576 INFO L93 Difference]: Finished difference Result 383 states and 680 transitions. [2021-12-22 00:19:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-22 00:19:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,578 INFO L225 Difference]: With dead ends: 383 [2021-12-22 00:19:53,578 INFO L226 Difference]: Without dead ends: 383 [2021-12-22 00:19:53,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,579 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 52 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 206 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-12-22 00:19:53,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 301. [2021-12-22 00:19:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.7566666666666666) internal successors, (527), 300 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 527 transitions. [2021-12-22 00:19:53,589 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 527 transitions. Word has length 21 [2021-12-22 00:19:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,589 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 527 transitions. [2021-12-22 00:19:53,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,590 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 527 transitions. [2021-12-22 00:19:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 00:19:53,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,591 INFO L514 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] [2021-12-22 00:19:53,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 00:19:53,591 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash -264078182, now seen corresponding path program 1 times [2021-12-22 00:19:53,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119443244] [2021-12-22 00:19:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119443244] [2021-12-22 00:19:53,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119443244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346556606] [2021-12-22 00:19:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,616 INFO L87 Difference]: Start difference. First operand 301 states and 527 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,625 INFO L93 Difference]: Finished difference Result 563 states and 992 transitions. [2021-12-22 00:19:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 00:19:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,628 INFO L225 Difference]: With dead ends: 563 [2021-12-22 00:19:53,628 INFO L226 Difference]: Without dead ends: 563 [2021-12-22 00:19:53,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,629 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 49 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 145 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-12-22 00:19:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 417. [2021-12-22 00:19:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.7283653846153846) internal successors, (719), 416 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 719 transitions. [2021-12-22 00:19:53,638 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 719 transitions. Word has length 22 [2021-12-22 00:19:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,639 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 719 transitions. [2021-12-22 00:19:53,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 719 transitions. [2021-12-22 00:19:53,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 00:19:53,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,640 INFO L514 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] [2021-12-22 00:19:53,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 00:19:53,640 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1543941860, now seen corresponding path program 1 times [2021-12-22 00:19:53,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365251082] [2021-12-22 00:19:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365251082] [2021-12-22 00:19:53,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365251082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81139427] [2021-12-22 00:19:53,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,664 INFO L87 Difference]: Start difference. First operand 417 states and 719 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,674 INFO L93 Difference]: Finished difference Result 587 states and 1004 transitions. [2021-12-22 00:19:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 00:19:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,677 INFO L225 Difference]: With dead ends: 587 [2021-12-22 00:19:53,677 INFO L226 Difference]: Without dead ends: 587 [2021-12-22 00:19:53,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,678 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 55 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-12-22 00:19:53,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2021-12-22 00:19:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.7174657534246576) internal successors, (1003), 584 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1003 transitions. [2021-12-22 00:19:53,689 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1003 transitions. Word has length 22 [2021-12-22 00:19:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,690 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 1003 transitions. [2021-12-22 00:19:53,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1003 transitions. [2021-12-22 00:19:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 00:19:53,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,691 INFO L514 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] [2021-12-22 00:19:53,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 00:19:53,691 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,692 INFO L85 PathProgramCache]: Analyzing trace with hash 403724673, now seen corresponding path program 1 times [2021-12-22 00:19:53,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389459785] [2021-12-22 00:19:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389459785] [2021-12-22 00:19:53,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389459785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665332923] [2021-12-22 00:19:53,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,732 INFO L87 Difference]: Start difference. First operand 585 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,742 INFO L93 Difference]: Finished difference Result 599 states and 1012 transitions. [2021-12-22 00:19:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 00:19:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,745 INFO L225 Difference]: With dead ends: 599 [2021-12-22 00:19:53,745 INFO L226 Difference]: Without dead ends: 599 [2021-12-22 00:19:53,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,746 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 57 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 180 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-22 00:19:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2021-12-22 00:19:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.6963087248322148) internal successors, (1011), 596 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1011 transitions. [2021-12-22 00:19:53,758 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1011 transitions. Word has length 23 [2021-12-22 00:19:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,759 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 1011 transitions. [2021-12-22 00:19:53,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1011 transitions. [2021-12-22 00:19:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 00:19:53,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,760 INFO L514 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] [2021-12-22 00:19:53,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 00:19:53,760 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,761 INFO L85 PathProgramCache]: Analyzing trace with hash -617343681, now seen corresponding path program 1 times [2021-12-22 00:19:53,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574785043] [2021-12-22 00:19:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574785043] [2021-12-22 00:19:53,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574785043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419363029] [2021-12-22 00:19:53,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,791 INFO L87 Difference]: Start difference. First operand 597 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,802 INFO L93 Difference]: Finished difference Result 1095 states and 1868 transitions. [2021-12-22 00:19:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 00:19:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,806 INFO L225 Difference]: With dead ends: 1095 [2021-12-22 00:19:53,806 INFO L226 Difference]: Without dead ends: 1095 [2021-12-22 00:19:53,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,807 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 143 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2021-12-22 00:19:53,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 837. [2021-12-22 00:19:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 1.6590909090909092) internal successors, (1387), 836 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1387 transitions. [2021-12-22 00:19:53,824 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1387 transitions. Word has length 23 [2021-12-22 00:19:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,825 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1387 transitions. [2021-12-22 00:19:53,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1387 transitions. [2021-12-22 00:19:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 00:19:53,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,826 INFO L514 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] [2021-12-22 00:19:53,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 00:19:53,827 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1897207359, now seen corresponding path program 1 times [2021-12-22 00:19:53,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633194783] [2021-12-22 00:19:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633194783] [2021-12-22 00:19:53,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633194783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486015904] [2021-12-22 00:19:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,849 INFO L87 Difference]: Start difference. First operand 837 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,863 INFO L93 Difference]: Finished difference Result 1159 states and 1908 transitions. [2021-12-22 00:19:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 00:19:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,867 INFO L225 Difference]: With dead ends: 1159 [2021-12-22 00:19:53,867 INFO L226 Difference]: Without dead ends: 1159 [2021-12-22 00:19:53,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,868 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 54 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-12-22 00:19:53,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2021-12-22 00:19:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.6496539792387543) internal successors, (1907), 1156 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1907 transitions. [2021-12-22 00:19:53,887 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1907 transitions. Word has length 23 [2021-12-22 00:19:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,887 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1907 transitions. [2021-12-22 00:19:53,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1907 transitions. [2021-12-22 00:19:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 00:19:53,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,889 INFO L514 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] [2021-12-22 00:19:53,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 00:19:53,889 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1957570863, now seen corresponding path program 1 times [2021-12-22 00:19:53,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889322217] [2021-12-22 00:19:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889322217] [2021-12-22 00:19:53,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889322217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070357498] [2021-12-22 00:19:53,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,910 INFO L87 Difference]: Start difference. First operand 1157 states and 1907 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,922 INFO L93 Difference]: Finished difference Result 1175 states and 1908 transitions. [2021-12-22 00:19:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-22 00:19:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,926 INFO L225 Difference]: With dead ends: 1175 [2021-12-22 00:19:53,927 INFO L226 Difference]: Without dead ends: 1175 [2021-12-22 00:19:53,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,927 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 56 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2021-12-22 00:19:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2021-12-22 00:19:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 1.6271331058020477) internal successors, (1907), 1172 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1907 transitions. [2021-12-22 00:19:53,947 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1907 transitions. Word has length 24 [2021-12-22 00:19:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:53,948 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1907 transitions. [2021-12-22 00:19:53,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1907 transitions. [2021-12-22 00:19:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 00:19:53,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:53,949 INFO L514 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] [2021-12-22 00:19:53,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 00:19:53,950 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1316328079, now seen corresponding path program 1 times [2021-12-22 00:19:53,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:53,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164103625] [2021-12-22 00:19:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:53,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:53,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:53,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164103625] [2021-12-22 00:19:53,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164103625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:53,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:53,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:53,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049758972] [2021-12-22 00:19:53,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:53,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:53,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,970 INFO L87 Difference]: Start difference. First operand 1173 states and 1907 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:53,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:53,985 INFO L93 Difference]: Finished difference Result 2119 states and 3476 transitions. [2021-12-22 00:19:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-22 00:19:53,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:53,992 INFO L225 Difference]: With dead ends: 2119 [2021-12-22 00:19:53,992 INFO L226 Difference]: Without dead ends: 2119 [2021-12-22 00:19:53,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:53,993 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 43 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:53,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 141 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2021-12-22 00:19:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1669. [2021-12-22 00:19:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 1.5845323741007193) internal successors, (2643), 1668 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2643 transitions. [2021-12-22 00:19:54,024 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2643 transitions. Word has length 24 [2021-12-22 00:19:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:54,024 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 2643 transitions. [2021-12-22 00:19:54,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2643 transitions. [2021-12-22 00:19:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 00:19:54,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:54,026 INFO L514 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] [2021-12-22 00:19:54,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 00:19:54,027 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash 36464401, now seen corresponding path program 1 times [2021-12-22 00:19:54,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:54,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631540761] [2021-12-22 00:19:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:54,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:54,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:54,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631540761] [2021-12-22 00:19:54,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631540761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:54,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:54,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:54,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499236658] [2021-12-22 00:19:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:54,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:54,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:54,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,060 INFO L87 Difference]: Start difference. First operand 1669 states and 2643 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:54,075 INFO L93 Difference]: Finished difference Result 2279 states and 3588 transitions. [2021-12-22 00:19:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:54,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-22 00:19:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:54,082 INFO L225 Difference]: With dead ends: 2279 [2021-12-22 00:19:54,082 INFO L226 Difference]: Without dead ends: 2279 [2021-12-22 00:19:54,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,083 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 53 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:54,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2021-12-22 00:19:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2277. [2021-12-22 00:19:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2276 states have (on average 1.5760105448154658) internal successors, (3587), 2276 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3587 transitions. [2021-12-22 00:19:54,119 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3587 transitions. Word has length 24 [2021-12-22 00:19:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:54,119 INFO L470 AbstractCegarLoop]: Abstraction has 2277 states and 3587 transitions. [2021-12-22 00:19:54,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3587 transitions. [2021-12-22 00:19:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 00:19:54,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:54,121 INFO L514 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] [2021-12-22 00:19:54,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 00:19:54,122 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:54,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2143288106, now seen corresponding path program 1 times [2021-12-22 00:19:54,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:54,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387301589] [2021-12-22 00:19:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:54,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:54,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:54,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387301589] [2021-12-22 00:19:54,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387301589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:54,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:54,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:54,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967733168] [2021-12-22 00:19:54,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:54,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:54,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,145 INFO L87 Difference]: Start difference. First operand 2277 states and 3587 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:54,160 INFO L93 Difference]: Finished difference Result 2311 states and 3588 transitions. [2021-12-22 00:19:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:54,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-22 00:19:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:54,167 INFO L225 Difference]: With dead ends: 2311 [2021-12-22 00:19:54,167 INFO L226 Difference]: Without dead ends: 2311 [2021-12-22 00:19:54,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,168 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 55 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:54,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2021-12-22 00:19:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2309. [2021-12-22 00:19:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 1.5541594454072791) internal successors, (3587), 2308 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3587 transitions. [2021-12-22 00:19:54,206 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3587 transitions. Word has length 25 [2021-12-22 00:19:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:54,206 INFO L470 AbstractCegarLoop]: Abstraction has 2309 states and 3587 transitions. [2021-12-22 00:19:54,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3587 transitions. [2021-12-22 00:19:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 00:19:54,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:54,209 INFO L514 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] [2021-12-22 00:19:54,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 00:19:54,209 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:54,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1130610836, now seen corresponding path program 1 times [2021-12-22 00:19:54,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:54,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69382853] [2021-12-22 00:19:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:54,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:54,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69382853] [2021-12-22 00:19:54,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69382853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:54,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:54,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:54,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058834659] [2021-12-22 00:19:54,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:54,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:54,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:54,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,243 INFO L87 Difference]: Start difference. First operand 2309 states and 3587 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:54,266 INFO L93 Difference]: Finished difference Result 4103 states and 6436 transitions. [2021-12-22 00:19:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:54,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-22 00:19:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:54,279 INFO L225 Difference]: With dead ends: 4103 [2021-12-22 00:19:54,279 INFO L226 Difference]: Without dead ends: 4103 [2021-12-22 00:19:54,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,281 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 40 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:54,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 139 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2021-12-22 00:19:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 3333. [2021-12-22 00:19:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3332 states have (on average 1.508703481392557) internal successors, (5027), 3332 states have internal predecessors, (5027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 5027 transitions. [2021-12-22 00:19:54,359 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 5027 transitions. Word has length 25 [2021-12-22 00:19:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:54,359 INFO L470 AbstractCegarLoop]: Abstraction has 3333 states and 5027 transitions. [2021-12-22 00:19:54,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 5027 transitions. [2021-12-22 00:19:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 00:19:54,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:54,363 INFO L514 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] [2021-12-22 00:19:54,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 00:19:54,363 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:54,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:54,363 INFO L85 PathProgramCache]: Analyzing trace with hash -149252842, now seen corresponding path program 1 times [2021-12-22 00:19:54,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:54,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448614941] [2021-12-22 00:19:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:54,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:54,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:54,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448614941] [2021-12-22 00:19:54,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448614941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:54,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:54,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:54,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211077244] [2021-12-22 00:19:54,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:54,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:54,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:54,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,391 INFO L87 Difference]: Start difference. First operand 3333 states and 5027 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:54,414 INFO L93 Difference]: Finished difference Result 4487 states and 6724 transitions. [2021-12-22 00:19:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:54,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-22 00:19:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:54,427 INFO L225 Difference]: With dead ends: 4487 [2021-12-22 00:19:54,427 INFO L226 Difference]: Without dead ends: 4487 [2021-12-22 00:19:54,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,429 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 52 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:54,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 177 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2021-12-22 00:19:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4485. [2021-12-22 00:19:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4484 states have (on average 1.4993309545049063) internal successors, (6723), 4484 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6723 transitions. [2021-12-22 00:19:54,500 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6723 transitions. Word has length 25 [2021-12-22 00:19:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:54,501 INFO L470 AbstractCegarLoop]: Abstraction has 4485 states and 6723 transitions. [2021-12-22 00:19:54,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6723 transitions. [2021-12-22 00:19:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 00:19:54,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:54,507 INFO L514 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] [2021-12-22 00:19:54,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 00:19:54,507 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash 689412294, now seen corresponding path program 1 times [2021-12-22 00:19:54,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:54,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989396901] [2021-12-22 00:19:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:54,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:54,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:54,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989396901] [2021-12-22 00:19:54,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989396901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:54,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:54,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:54,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056264247] [2021-12-22 00:19:54,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:54,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:54,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,530 INFO L87 Difference]: Start difference. First operand 4485 states and 6723 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:54,581 INFO L93 Difference]: Finished difference Result 4551 states and 6724 transitions. [2021-12-22 00:19:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:54,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 00:19:54,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:54,605 INFO L225 Difference]: With dead ends: 4551 [2021-12-22 00:19:54,605 INFO L226 Difference]: Without dead ends: 4551 [2021-12-22 00:19:54,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,607 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 54 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:54,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 168 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2021-12-22 00:19:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4549. [2021-12-22 00:19:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4549 states, 4548 states have (on average 1.4782321899736148) internal successors, (6723), 4548 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 6723 transitions. [2021-12-22 00:19:54,670 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 6723 transitions. Word has length 26 [2021-12-22 00:19:54,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:54,670 INFO L470 AbstractCegarLoop]: Abstraction has 4549 states and 6723 transitions. [2021-12-22 00:19:54,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 6723 transitions. [2021-12-22 00:19:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 00:19:54,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:54,674 INFO L514 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] [2021-12-22 00:19:54,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 00:19:54,675 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:54,676 INFO L85 PathProgramCache]: Analyzing trace with hash -331656060, now seen corresponding path program 1 times [2021-12-22 00:19:54,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:54,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199946367] [2021-12-22 00:19:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:54,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:54,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:54,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199946367] [2021-12-22 00:19:54,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199946367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:54,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:54,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:54,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617947412] [2021-12-22 00:19:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:54,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:54,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:54,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:54,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,700 INFO L87 Difference]: Start difference. First operand 4549 states and 6723 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:54,731 INFO L93 Difference]: Finished difference Result 7943 states and 11844 transitions. [2021-12-22 00:19:54,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:54,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 00:19:54,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:54,745 INFO L225 Difference]: With dead ends: 7943 [2021-12-22 00:19:54,745 INFO L226 Difference]: Without dead ends: 7943 [2021-12-22 00:19:54,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,746 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 37 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:54,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 137 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2021-12-22 00:19:54,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 6661. [2021-12-22 00:19:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 6660 states have (on average 1.4322822822822823) internal successors, (9539), 6660 states have internal predecessors, (9539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 9539 transitions. [2021-12-22 00:19:54,881 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 9539 transitions. Word has length 26 [2021-12-22 00:19:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:54,881 INFO L470 AbstractCegarLoop]: Abstraction has 6661 states and 9539 transitions. [2021-12-22 00:19:54,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 9539 transitions. [2021-12-22 00:19:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 00:19:54,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:54,890 INFO L514 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] [2021-12-22 00:19:54,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 00:19:54,891 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1611519738, now seen corresponding path program 1 times [2021-12-22 00:19:54,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:54,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090140297] [2021-12-22 00:19:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:54,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:54,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:54,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090140297] [2021-12-22 00:19:54,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090140297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:54,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:54,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:54,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879176496] [2021-12-22 00:19:54,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:54,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:54,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,916 INFO L87 Difference]: Start difference. First operand 6661 states and 9539 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:54,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:54,948 INFO L93 Difference]: Finished difference Result 8839 states and 12548 transitions. [2021-12-22 00:19:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:54,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 00:19:54,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:54,961 INFO L225 Difference]: With dead ends: 8839 [2021-12-22 00:19:54,961 INFO L226 Difference]: Without dead ends: 8839 [2021-12-22 00:19:54,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:54,963 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 51 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:54,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 178 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2021-12-22 00:19:55,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8837. [2021-12-22 00:19:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8837 states, 8836 states have (on average 1.4199864191942055) internal successors, (12547), 8836 states have internal predecessors, (12547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 12547 transitions. [2021-12-22 00:19:55,108 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 12547 transitions. Word has length 26 [2021-12-22 00:19:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:55,108 INFO L470 AbstractCegarLoop]: Abstraction has 8837 states and 12547 transitions. [2021-12-22 00:19:55,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 12547 transitions. [2021-12-22 00:19:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:19:55,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:55,117 INFO L514 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] [2021-12-22 00:19:55,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 00:19:55,117 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:55,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1691188181, now seen corresponding path program 1 times [2021-12-22 00:19:55,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:55,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349176952] [2021-12-22 00:19:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:55,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:55,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:55,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349176952] [2021-12-22 00:19:55,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349176952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:55,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:55,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:55,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254139719] [2021-12-22 00:19:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:55,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:55,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:55,144 INFO L87 Difference]: Start difference. First operand 8837 states and 12547 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:55,214 INFO L93 Difference]: Finished difference Result 8967 states and 12548 transitions. [2021-12-22 00:19:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:19:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:55,226 INFO L225 Difference]: With dead ends: 8967 [2021-12-22 00:19:55,226 INFO L226 Difference]: Without dead ends: 8967 [2021-12-22 00:19:55,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:55,226 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 53 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:55,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 164 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8967 states. [2021-12-22 00:19:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8967 to 8965. [2021-12-22 00:19:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8965 states, 8964 states have (on average 1.3997099509147701) internal successors, (12547), 8964 states have internal predecessors, (12547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8965 states to 8965 states and 12547 transitions. [2021-12-22 00:19:55,367 INFO L78 Accepts]: Start accepts. Automaton has 8965 states and 12547 transitions. Word has length 27 [2021-12-22 00:19:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:55,367 INFO L470 AbstractCegarLoop]: Abstraction has 8965 states and 12547 transitions. [2021-12-22 00:19:55,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8965 states and 12547 transitions. [2021-12-22 00:19:55,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:19:55,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:55,377 INFO L514 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] [2021-12-22 00:19:55,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 00:19:55,377 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1582710761, now seen corresponding path program 1 times [2021-12-22 00:19:55,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:55,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885955292] [2021-12-22 00:19:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:55,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:55,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:55,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885955292] [2021-12-22 00:19:55,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885955292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:55,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:55,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:55,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563628313] [2021-12-22 00:19:55,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:55,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:55,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:55,410 INFO L87 Difference]: Start difference. First operand 8965 states and 12547 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:55,457 INFO L93 Difference]: Finished difference Result 15367 states and 21636 transitions. [2021-12-22 00:19:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:55,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:19:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:55,486 INFO L225 Difference]: With dead ends: 15367 [2021-12-22 00:19:55,486 INFO L226 Difference]: Without dead ends: 15367 [2021-12-22 00:19:55,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:55,487 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 34 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:55,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 135 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2021-12-22 00:19:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 13317. [2021-12-22 00:19:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13317 states, 13316 states have (on average 1.3555872634424753) internal successors, (18051), 13316 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13317 states to 13317 states and 18051 transitions. [2021-12-22 00:19:55,726 INFO L78 Accepts]: Start accepts. Automaton has 13317 states and 18051 transitions. Word has length 27 [2021-12-22 00:19:55,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:55,727 INFO L470 AbstractCegarLoop]: Abstraction has 13317 states and 18051 transitions. [2021-12-22 00:19:55,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13317 states and 18051 transitions. [2021-12-22 00:19:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:19:55,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:55,741 INFO L514 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] [2021-12-22 00:19:55,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 00:19:55,742 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:55,743 INFO L85 PathProgramCache]: Analyzing trace with hash 302847083, now seen corresponding path program 1 times [2021-12-22 00:19:55,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:55,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319833744] [2021-12-22 00:19:55,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:55,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:55,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:55,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319833744] [2021-12-22 00:19:55,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319833744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:55,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:55,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:55,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928868880] [2021-12-22 00:19:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:55,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:55,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:55,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:55,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:55,772 INFO L87 Difference]: Start difference. First operand 13317 states and 18051 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:55,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:55,864 INFO L93 Difference]: Finished difference Result 17415 states and 23300 transitions. [2021-12-22 00:19:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:55,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:19:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:55,884 INFO L225 Difference]: With dead ends: 17415 [2021-12-22 00:19:55,884 INFO L226 Difference]: Without dead ends: 17415 [2021-12-22 00:19:55,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:55,885 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 50 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:55,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 179 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2021-12-22 00:19:56,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17413. [2021-12-22 00:19:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17413 states, 17412 states have (on average 1.3381001608086378) internal successors, (23299), 17412 states have internal predecessors, (23299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 23299 transitions. [2021-12-22 00:19:56,121 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 23299 transitions. Word has length 27 [2021-12-22 00:19:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:56,121 INFO L470 AbstractCegarLoop]: Abstraction has 17413 states and 23299 transitions. [2021-12-22 00:19:56,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 23299 transitions. [2021-12-22 00:19:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:19:56,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:56,205 INFO L514 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] [2021-12-22 00:19:56,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 00:19:56,205 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1819608763, now seen corresponding path program 1 times [2021-12-22 00:19:56,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:56,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803572466] [2021-12-22 00:19:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:56,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:56,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:56,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803572466] [2021-12-22 00:19:56,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803572466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:56,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:56,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:56,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678831159] [2021-12-22 00:19:56,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:56,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:56,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:56,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:56,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:56,233 INFO L87 Difference]: Start difference. First operand 17413 states and 23299 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:56,283 INFO L93 Difference]: Finished difference Result 17671 states and 23300 transitions. [2021-12-22 00:19:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:56,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 00:19:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:56,313 INFO L225 Difference]: With dead ends: 17671 [2021-12-22 00:19:56,314 INFO L226 Difference]: Without dead ends: 17671 [2021-12-22 00:19:56,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:56,315 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:56,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2021-12-22 00:19:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 17669. [2021-12-22 00:19:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17669 states, 17668 states have (on average 1.318711795336201) internal successors, (23299), 17668 states have internal predecessors, (23299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17669 states to 17669 states and 23299 transitions. [2021-12-22 00:19:56,633 INFO L78 Accepts]: Start accepts. Automaton has 17669 states and 23299 transitions. Word has length 28 [2021-12-22 00:19:56,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:56,633 INFO L470 AbstractCegarLoop]: Abstraction has 17669 states and 23299 transitions. [2021-12-22 00:19:56,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 17669 states and 23299 transitions. [2021-12-22 00:19:56,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:19:56,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:56,647 INFO L514 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] [2021-12-22 00:19:56,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 00:19:56,647 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:56,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:56,648 INFO L85 PathProgramCache]: Analyzing trace with hash 798540409, now seen corresponding path program 1 times [2021-12-22 00:19:56,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:56,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365250950] [2021-12-22 00:19:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:56,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:56,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:56,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365250950] [2021-12-22 00:19:56,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365250950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:56,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:56,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:56,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477456310] [2021-12-22 00:19:56,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:56,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:56,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:56,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:56,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:56,665 INFO L87 Difference]: Start difference. First operand 17669 states and 23299 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:56,735 INFO L93 Difference]: Finished difference Result 29703 states and 39172 transitions. [2021-12-22 00:19:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:56,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 00:19:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:56,776 INFO L225 Difference]: With dead ends: 29703 [2021-12-22 00:19:56,776 INFO L226 Difference]: Without dead ends: 29703 [2021-12-22 00:19:56,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:56,777 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 31 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:56,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 133 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29703 states. [2021-12-22 00:19:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29703 to 26629. [2021-12-22 00:19:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26629 states, 26628 states have (on average 1.2787667117320114) internal successors, (34051), 26628 states have internal predecessors, (34051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26629 states to 26629 states and 34051 transitions. [2021-12-22 00:19:57,176 INFO L78 Accepts]: Start accepts. Automaton has 26629 states and 34051 transitions. Word has length 28 [2021-12-22 00:19:57,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:57,177 INFO L470 AbstractCegarLoop]: Abstraction has 26629 states and 34051 transitions. [2021-12-22 00:19:57,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:57,177 INFO L276 IsEmpty]: Start isEmpty. Operand 26629 states and 34051 transitions. [2021-12-22 00:19:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:19:57,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:57,201 INFO L514 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] [2021-12-22 00:19:57,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 00:19:57,202 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash -481323269, now seen corresponding path program 1 times [2021-12-22 00:19:57,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:57,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022792108] [2021-12-22 00:19:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:57,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:57,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:57,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022792108] [2021-12-22 00:19:57,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022792108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:57,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:57,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:57,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49892084] [2021-12-22 00:19:57,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:57,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:57,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:57,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:57,220 INFO L87 Difference]: Start difference. First operand 26629 states and 34051 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:57,387 INFO L93 Difference]: Finished difference Result 34311 states and 43012 transitions. [2021-12-22 00:19:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:57,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 00:19:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:57,424 INFO L225 Difference]: With dead ends: 34311 [2021-12-22 00:19:57,424 INFO L226 Difference]: Without dead ends: 34311 [2021-12-22 00:19:57,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:57,426 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:57,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34311 states. [2021-12-22 00:19:57,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34311 to 34309. [2021-12-22 00:19:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34309 states, 34308 states have (on average 1.2536726128016789) internal successors, (43011), 34308 states have internal predecessors, (43011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34309 states to 34309 states and 43011 transitions. [2021-12-22 00:19:57,913 INFO L78 Accepts]: Start accepts. Automaton has 34309 states and 43011 transitions. Word has length 28 [2021-12-22 00:19:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:57,914 INFO L470 AbstractCegarLoop]: Abstraction has 34309 states and 43011 transitions. [2021-12-22 00:19:57,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 34309 states and 43011 transitions. [2021-12-22 00:19:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 00:19:57,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:57,936 INFO L514 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] [2021-12-22 00:19:57,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 00:19:57,936 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1014835328, now seen corresponding path program 1 times [2021-12-22 00:19:57,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:57,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697539353] [2021-12-22 00:19:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:57,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:57,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:57,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697539353] [2021-12-22 00:19:57,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697539353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:57,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:57,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:57,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699847371] [2021-12-22 00:19:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:57,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:57,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:57,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:57,956 INFO L87 Difference]: Start difference. First operand 34309 states and 43011 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:58,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:58,210 INFO L93 Difference]: Finished difference Result 34823 states and 43012 transitions. [2021-12-22 00:19:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:58,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-22 00:19:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:58,245 INFO L225 Difference]: With dead ends: 34823 [2021-12-22 00:19:58,245 INFO L226 Difference]: Without dead ends: 34823 [2021-12-22 00:19:58,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:58,246 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 51 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:58,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34823 states. [2021-12-22 00:19:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34823 to 34821. [2021-12-22 00:19:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34821 states, 34820 states have (on average 1.23523836875359) internal successors, (43011), 34820 states have internal predecessors, (43011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 43011 transitions. [2021-12-22 00:19:58,643 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 43011 transitions. Word has length 29 [2021-12-22 00:19:58,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:58,643 INFO L470 AbstractCegarLoop]: Abstraction has 34821 states and 43011 transitions. [2021-12-22 00:19:58,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 43011 transitions. [2021-12-22 00:19:58,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 00:19:58,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:58,661 INFO L514 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] [2021-12-22 00:19:58,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 00:19:58,662 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:58,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:58,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2035903682, now seen corresponding path program 1 times [2021-12-22 00:19:58,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:58,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938778107] [2021-12-22 00:19:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:58,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:58,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:58,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938778107] [2021-12-22 00:19:58,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938778107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:58,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:58,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:58,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236951465] [2021-12-22 00:19:58,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:58,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:58,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:58,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:58,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:58,682 INFO L87 Difference]: Start difference. First operand 34821 states and 43011 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:58,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:19:58,825 INFO L93 Difference]: Finished difference Result 67591 states and 79876 transitions. [2021-12-22 00:19:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:19:58,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-22 00:19:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:19:58,886 INFO L225 Difference]: With dead ends: 67591 [2021-12-22 00:19:58,886 INFO L226 Difference]: Without dead ends: 67591 [2021-12-22 00:19:58,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:58,887 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 49 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:19:58,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:19:58,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67591 states. [2021-12-22 00:19:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67591 to 67589. [2021-12-22 00:19:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67589 states, 67588 states have (on average 1.1817926259099247) internal successors, (79875), 67588 states have internal predecessors, (79875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 79875 transitions. [2021-12-22 00:19:59,738 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 79875 transitions. Word has length 29 [2021-12-22 00:19:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:19:59,739 INFO L470 AbstractCegarLoop]: Abstraction has 67589 states and 79875 transitions. [2021-12-22 00:19:59,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:19:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 79875 transitions. [2021-12-22 00:19:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 00:19:59,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:19:59,947 INFO L514 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] [2021-12-22 00:19:59,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 00:19:59,947 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:19:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:19:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash -756040004, now seen corresponding path program 1 times [2021-12-22 00:19:59,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:19:59,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906888428] [2021-12-22 00:19:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:19:59,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:19:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:19:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:19:59,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:19:59,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906888428] [2021-12-22 00:19:59,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906888428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:19:59,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:19:59,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:19:59,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110452105] [2021-12-22 00:19:59,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:19:59,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:19:59,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:19:59,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:19:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:19:59,966 INFO L87 Difference]: Start difference. First operand 67589 states and 79875 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:20:00,096 INFO L93 Difference]: Finished difference Result 71687 states and 84996 transitions. [2021-12-22 00:20:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:20:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-22 00:20:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:20:00,168 INFO L225 Difference]: With dead ends: 71687 [2021-12-22 00:20:00,168 INFO L226 Difference]: Without dead ends: 71687 [2021-12-22 00:20:00,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:20:00,171 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 28 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:20:00,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 166 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:20:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71687 states. [2021-12-22 00:20:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71687 to 67589. [2021-12-22 00:20:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67589 states, 67588 states have (on average 1.166642007456945) internal successors, (78851), 67588 states have internal predecessors, (78851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 78851 transitions. [2021-12-22 00:20:00,932 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 78851 transitions. Word has length 29 [2021-12-22 00:20:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:20:00,932 INFO L470 AbstractCegarLoop]: Abstraction has 67589 states and 78851 transitions. [2021-12-22 00:20:00,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 78851 transitions. [2021-12-22 00:20:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 00:20:01,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:20:01,172 INFO L514 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] [2021-12-22 00:20:01,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-22 00:20:01,172 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:20:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:20:01,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1311711408, now seen corresponding path program 1 times [2021-12-22 00:20:01,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:20:01,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872594328] [2021-12-22 00:20:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:20:01,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:20:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:20:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:20:01,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:20:01,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872594328] [2021-12-22 00:20:01,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872594328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:20:01,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:20:01,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:20:01,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596108809] [2021-12-22 00:20:01,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:20:01,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:20:01,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:20:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:20:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:20:01,206 INFO L87 Difference]: Start difference. First operand 67589 states and 78851 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:01,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:20:01,431 INFO L93 Difference]: Finished difference Result 109573 states and 124931 transitions. [2021-12-22 00:20:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:20:01,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-22 00:20:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:20:01,546 INFO L225 Difference]: With dead ends: 109573 [2021-12-22 00:20:01,546 INFO L226 Difference]: Without dead ends: 109573 [2021-12-22 00:20:01,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:20:01,547 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 24 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:20:01,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:20:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2021-12-22 00:20:02,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 105477. [2021-12-22 00:20:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105477 states, 105476 states have (on average 1.1456160643179492) internal successors, (120835), 105476 states have internal predecessors, (120835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105477 states to 105477 states and 120835 transitions. [2021-12-22 00:20:03,017 INFO L78 Accepts]: Start accepts. Automaton has 105477 states and 120835 transitions. Word has length 30 [2021-12-22 00:20:03,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:20:03,017 INFO L470 AbstractCegarLoop]: Abstraction has 105477 states and 120835 transitions. [2021-12-22 00:20:03,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 105477 states and 120835 transitions. [2021-12-22 00:20:03,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 00:20:03,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:20:03,076 INFO L514 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] [2021-12-22 00:20:03,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 00:20:03,076 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 00:20:03,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:20:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash 31847730, now seen corresponding path program 1 times [2021-12-22 00:20:03,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:20:03,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594978359] [2021-12-22 00:20:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:20:03,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:20:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:20:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:20:03,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:20:03,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594978359] [2021-12-22 00:20:03,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594978359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:20:03,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:20:03,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:20:03,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920315521] [2021-12-22 00:20:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:20:03,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:20:03,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:20:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:20:03,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:20:03,103 INFO L87 Difference]: Start difference. First operand 105477 states and 120835 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:20:03,387 INFO L93 Difference]: Finished difference Result 132099 states and 145410 transitions. [2021-12-22 00:20:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:20:03,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-22 00:20:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:20:03,388 INFO L225 Difference]: With dead ends: 132099 [2021-12-22 00:20:03,388 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 00:20:03,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:20:03,388 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:20:03,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:20:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 00:20:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 00:20:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:03,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 00:20:03,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-12-22 00:20:03,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:20:03,389 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 00:20:03,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:20:03,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 00:20:03,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 00:20:03,392 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-22 00:20:03,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-22 00:20:03,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 00:20:03,396 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:20:03,397 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 00:20:03,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:20:03 BoogieIcfgContainer [2021-12-22 00:20:03,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 00:20:03,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 00:20:03,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 00:20:03,400 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 00:20:03,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:19:52" (3/4) ... [2021-12-22 00:20:03,403 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 00:20:03,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-22 00:20:03,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 00:20:03,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-22 00:20:03,414 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 00:20:03,445 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 00:20:03,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 00:20:03,446 INFO L158 Benchmark]: Toolchain (without parser) took 11656.41ms. Allocated memory was 96.5MB in the beginning and 8.5GB in the end (delta: 8.4GB). Free memory was 65.5MB in the beginning and 7.2GB in the end (delta: -7.1GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2021-12-22 00:20:03,446 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:20:03,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.20ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 65.2MB in the beginning and 112.1MB in the end (delta: -46.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 00:20:03,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.43ms. Allocated memory is still 136.3MB. Free memory was 111.9MB in the beginning and 110.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 00:20:03,447 INFO L158 Benchmark]: Boogie Preprocessor took 19.92ms. Allocated memory is still 136.3MB. Free memory was 110.0MB in the beginning and 108.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 00:20:03,447 INFO L158 Benchmark]: RCFGBuilder took 392.70ms. Allocated memory is still 136.3MB. Free memory was 108.6MB in the beginning and 94.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-22 00:20:03,447 INFO L158 Benchmark]: TraceAbstraction took 10927.90ms. Allocated memory was 136.3MB in the beginning and 8.5GB in the end (delta: 8.3GB). Free memory was 93.9MB in the beginning and 7.2GB in the end (delta: -7.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-12-22 00:20:03,447 INFO L158 Benchmark]: Witness Printer took 45.56ms. Allocated memory is still 8.5GB. Free memory was 7.2GB in the beginning and 7.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 00:20:03,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.20ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 65.2MB in the beginning and 112.1MB in the end (delta: -46.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.43ms. Allocated memory is still 136.3MB. Free memory was 111.9MB in the beginning and 110.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.92ms. Allocated memory is still 136.3MB. Free memory was 110.0MB in the beginning and 108.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.70ms. Allocated memory is still 136.3MB. Free memory was 108.6MB in the beginning and 94.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10927.90ms. Allocated memory was 136.3MB in the beginning and 8.5GB in the end (delta: 8.3GB). Free memory was 93.9MB in the beginning and 7.2GB in the end (delta: -7.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 45.56ms. Allocated memory is still 8.5GB. Free memory was 7.2GB in the beginning and 7.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 191]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 35, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.7s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1699 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1699 mSDsluCounter, 5554 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2170 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 3384 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105477occurred in iteration=34, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.1s AutomataMinimizationTime, 35 MinimizatonAttempts, 16418 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 787 ConstructedInterpolants, 0 QuantifiedInterpolants, 1719 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-22 00:20:03,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE