./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3dbbec33 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_7.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 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 14:01:50,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:01:50,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:01:50,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:01:50,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:01:50,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:01:50,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:01:50,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:01:50,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:01:50,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:01:50,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:01:50,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:01:50,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:01:50,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:01:50,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:01:50,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:01:50,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:01:50,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:01:50,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:01:50,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:01:50,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:01:50,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:01:50,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:01:50,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:01:50,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:01:50,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:01:50,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:01:50,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:01:50,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:01:50,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:01:50,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:01:50,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:01:50,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:01:50,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:01:50,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:01:50,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:01:50,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:01:50,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:01:50,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:01:50,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:01:50,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:01:50,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 14:01:50,518 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:01:50,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:01:50,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:01:50,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:01:50,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 14:01:50,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 14:01:50,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:01:50,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:01:50,523 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:01:50,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:01:50,524 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 14:01:50,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:01:50,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:01:50,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 14:01:50,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:01:50,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 14:01:50,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 14:01:50,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 14:01:50,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 14:01:50,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 14:01:50,526 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 14:01:50,526 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:01:50,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:01:50,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:01:50,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 14:01:50,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:01:50,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:01:50,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 14:01:50,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:01:50,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 14:01:50,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 14:01:50,527 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 14:01:50,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 14:01:50,528 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 14:01:50,528 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 [2023-02-14 14:01:50,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:01:50,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:01:50,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:01:50,770 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:01:50,770 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:01:50,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_7.c [2023-02-14 14:01:51,808 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:01:51,965 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:01:51,966 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_7.c [2023-02-14 14:01:51,970 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0e316ad/a5be654fa6e742e6b13aa3e4d2461638/FLAG02b9bf743 [2023-02-14 14:01:51,985 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0e316ad/a5be654fa6e742e6b13aa3e4d2461638 [2023-02-14 14:01:51,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:01:51,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:01:51,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:01:51,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:01:51,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:01:51,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:01:51" (1/1) ... [2023-02-14 14:01:51,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d03142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:51, skipping insertion in model container [2023-02-14 14:01:51,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:01:51" (1/1) ... [2023-02-14 14:01:51,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:01:52,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:01:52,111 WARN L237 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_7.c[2881,2894] [2023-02-14 14:01:52,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:01:52,127 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:01:52,151 WARN L237 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_7.c[2881,2894] [2023-02-14 14:01:52,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:01:52,161 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:01:52,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52 WrapperNode [2023-02-14 14:01:52,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:01:52,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:01:52,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:01:52,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:01:52,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,187 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2023-02-14 14:01:52,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:01:52,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:01:52,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:01:52,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:01:52,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,209 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:01:52,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:01:52,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:01:52,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:01:52,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (1/1) ... [2023-02-14 14:01:52,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:01:52,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:01:52,240 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) [2023-02-14 14:01:52,256 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 [2023-02-14 14:01:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 14:01:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:01:52,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:01:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 14:01:52,321 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:01:52,322 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:01:52,446 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:01:52,450 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:01:52,450 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 14:01:52,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:01:52 BoogieIcfgContainer [2023-02-14 14:01:52,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:01:52,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 14:01:52,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 14:01:52,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 14:01:52,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:01:51" (1/3) ... [2023-02-14 14:01:52,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b201a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:01:52, skipping insertion in model container [2023-02-14 14:01:52,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:01:52" (2/3) ... [2023-02-14 14:01:52,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b201a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:01:52, skipping insertion in model container [2023-02-14 14:01:52,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:01:52" (3/3) ... [2023-02-14 14:01:52,457 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2023-02-14 14:01:52,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 14:01:52,489 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-02-14 14:01:52,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 14:01:52,537 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@399c3a93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 14:01:52,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-02-14 14:01:52,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 29 states have (on average 1.896551724137931) internal successors, (55), 31 states have internal predecessors, (55), 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) [2023-02-14 14:01:52,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 14:01:52,551 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:52,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 14:01:52,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:52,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:52,560 INFO L85 PathProgramCache]: Analyzing trace with hash 28701835, now seen corresponding path program 1 times [2023-02-14 14:01:52,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:52,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214933516] [2023-02-14 14:01:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:52,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:52,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:52,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214933516] [2023-02-14 14:01:52,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214933516] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:52,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:52,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:01:52,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328061208] [2023-02-14 14:01:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:52,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 14:01:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 14:01:52,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 14:01:52,698 INFO L87 Difference]: Start difference. First operand has 32 states, 29 states have (on average 1.896551724137931) internal successors, (55), 31 states have internal predecessors, (55), 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) [2023-02-14 14:01:52,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:52,712 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2023-02-14 14:01:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 14:01:52,720 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 [2023-02-14 14:01:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:52,731 INFO L225 Difference]: With dead ends: 32 [2023-02-14 14:01:52,732 INFO L226 Difference]: Without dead ends: 30 [2023-02-14 14:01:52,733 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:52,736 INFO L413 NwaCegarLoop]: 52 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, 52 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 [2023-02-14 14:01:52,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-14 14:01:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-14 14:01:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) [2023-02-14 14:01:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2023-02-14 14:01:52,796 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 5 [2023-02-14 14:01:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:52,799 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2023-02-14 14:01:52,800 INFO L496 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) [2023-02-14 14:01:52,800 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2023-02-14 14:01:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 14:01:52,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:52,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 14:01:52,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 14:01:52,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash 889696331, now seen corresponding path program 1 times [2023-02-14 14:01:52,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:52,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508647359] [2023-02-14 14:01:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:52,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508647359] [2023-02-14 14:01:52,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508647359] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:52,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:52,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:01:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070765099] [2023-02-14 14:01:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:52,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:52,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:52,872 INFO L87 Difference]: Start difference. First operand 30 states and 50 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) [2023-02-14 14:01:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:52,891 INFO L93 Difference]: Finished difference Result 29 states and 49 transitions. [2023-02-14 14:01:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:52,891 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 [2023-02-14 14:01:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:52,892 INFO L225 Difference]: With dead ends: 29 [2023-02-14 14:01:52,892 INFO L226 Difference]: Without dead ends: 27 [2023-02-14 14:01:52,893 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:52,893 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 49 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 [2023-02-14 14:01:52,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-14 14:01:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-14 14:01:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 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) [2023-02-14 14:01:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 47 transitions. [2023-02-14 14:01:52,902 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 47 transitions. Word has length 6 [2023-02-14 14:01:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:52,903 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 47 transitions. [2023-02-14 14:01:52,903 INFO L496 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) [2023-02-14 14:01:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 47 transitions. [2023-02-14 14:01:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 14:01:52,903 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:52,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 14:01:52,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash -882170869, now seen corresponding path program 1 times [2023-02-14 14:01:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50991610] [2023-02-14 14:01:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:52,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:52,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:52,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50991610] [2023-02-14 14:01:52,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50991610] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:52,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:52,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719068784] [2023-02-14 14:01:52,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:52,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:52,955 INFO L87 Difference]: Start difference. First operand 27 states and 47 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-02-14 14:01:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:52,969 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2023-02-14 14:01:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:52,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-02-14 14:01:52,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:52,971 INFO L225 Difference]: With dead ends: 51 [2023-02-14 14:01:52,971 INFO L226 Difference]: Without dead ends: 51 [2023-02-14 14:01:52,971 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:52,972 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 33 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 91 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 [2023-02-14 14:01:52,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 91 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:52,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-14 14:01:52,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2023-02-14 14:01:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 34 states have internal predecessors, (62), 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) [2023-02-14 14:01:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2023-02-14 14:01:52,978 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 14 [2023-02-14 14:01:52,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:52,978 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2023-02-14 14:01:52,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-02-14 14:01:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2023-02-14 14:01:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 14:01:52,979 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:52,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 14:01:52,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1275197879, now seen corresponding path program 1 times [2023-02-14 14:01:52,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:52,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644430737] [2023-02-14 14:01:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644430737] [2023-02-14 14:01:53,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644430737] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8020389] [2023-02-14 14:01:53,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,051 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-02-14 14:01:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,078 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2023-02-14 14:01:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-02-14 14:01:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,080 INFO L225 Difference]: With dead ends: 51 [2023-02-14 14:01:53,080 INFO L226 Difference]: Without dead ends: 51 [2023-02-14 14:01:53,080 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,081 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 101 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 [2023-02-14 14:01:53,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 101 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-14 14:01:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-02-14 14:01:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7916666666666667) internal successors, (86), 48 states have internal predecessors, (86), 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) [2023-02-14 14:01:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2023-02-14 14:01:53,094 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 14 [2023-02-14 14:01:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,094 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2023-02-14 14:01:53,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-02-14 14:01:53,094 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2023-02-14 14:01:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 14:01:53,098 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 14:01:53,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1577278843, now seen corresponding path program 1 times [2023-02-14 14:01:53,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643037735] [2023-02-14 14:01:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643037735] [2023-02-14 14:01:53,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643037735] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281051571] [2023-02-14 14:01:53,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,151 INFO L87 Difference]: Start difference. First operand 49 states and 86 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-02-14 14:01:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,171 INFO L93 Difference]: Finished difference Result 54 states and 89 transitions. [2023-02-14 14:01:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-02-14 14:01:53,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,173 INFO L225 Difference]: With dead ends: 54 [2023-02-14 14:01:53,174 INFO L226 Difference]: Without dead ends: 54 [2023-02-14 14:01:53,175 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,175 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 112 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 [2023-02-14 14:01:53,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 112 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-14 14:01:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2023-02-14 14:01:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 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) [2023-02-14 14:01:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 88 transitions. [2023-02-14 14:01:53,186 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 88 transitions. Word has length 15 [2023-02-14 14:01:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,187 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 88 transitions. [2023-02-14 14:01:53,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-02-14 14:01:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 88 transitions. [2023-02-14 14:01:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 14:01:53,189 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 14:01:53,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,190 INFO L85 PathProgramCache]: Analyzing trace with hash -876214265, now seen corresponding path program 1 times [2023-02-14 14:01:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297424768] [2023-02-14 14:01:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297424768] [2023-02-14 14:01:53,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297424768] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130058900] [2023-02-14 14:01:53,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,242 INFO L87 Difference]: Start difference. First operand 52 states and 88 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-02-14 14:01:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,260 INFO L93 Difference]: Finished difference Result 95 states and 162 transitions. [2023-02-14 14:01:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-02-14 14:01:53,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,261 INFO L225 Difference]: With dead ends: 95 [2023-02-14 14:01:53,264 INFO L226 Difference]: Without dead ends: 95 [2023-02-14 14:01:53,265 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,266 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 30 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 89 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 [2023-02-14 14:01:53,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 89 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-14 14:01:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2023-02-14 14:01:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 68 states have internal predecessors, (117), 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) [2023-02-14 14:01:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 117 transitions. [2023-02-14 14:01:53,272 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 117 transitions. Word has length 15 [2023-02-14 14:01:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,272 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 117 transitions. [2023-02-14 14:01:53,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-02-14 14:01:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 117 transitions. [2023-02-14 14:01:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 14:01:53,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 14:01:53,273 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1269241275, now seen corresponding path program 1 times [2023-02-14 14:01:53,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837966944] [2023-02-14 14:01:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837966944] [2023-02-14 14:01:53,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837966944] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535417196] [2023-02-14 14:01:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,312 INFO L87 Difference]: Start difference. First operand 69 states and 117 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-02-14 14:01:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,323 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2023-02-14 14:01:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-02-14 14:01:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,327 INFO L225 Difference]: With dead ends: 97 [2023-02-14 14:01:53,327 INFO L226 Difference]: Without dead ends: 97 [2023-02-14 14:01:53,328 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,328 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 102 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 [2023-02-14 14:01:53,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 102 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-14 14:01:53,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2023-02-14 14:01:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 94 states have internal predecessors, (159), 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) [2023-02-14 14:01:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 159 transitions. [2023-02-14 14:01:53,333 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 159 transitions. Word has length 15 [2023-02-14 14:01:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,333 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 159 transitions. [2023-02-14 14:01:53,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-02-14 14:01:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 159 transitions. [2023-02-14 14:01:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 14:01:53,334 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 14:01:53,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1392623778, now seen corresponding path program 1 times [2023-02-14 14:01:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303696656] [2023-02-14 14:01:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303696656] [2023-02-14 14:01:53,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303696656] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376557688] [2023-02-14 14:01:53,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,372 INFO L87 Difference]: Start difference. First operand 95 states and 159 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-02-14 14:01:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,385 INFO L93 Difference]: Finished difference Result 99 states and 160 transitions. [2023-02-14 14:01:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-02-14 14:01:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,386 INFO L225 Difference]: With dead ends: 99 [2023-02-14 14:01:53,386 INFO L226 Difference]: Without dead ends: 99 [2023-02-14 14:01:53,387 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,388 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 34 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 108 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 [2023-02-14 14:01:53,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 108 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-14 14:01:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2023-02-14 14:01:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.65625) internal successors, (159), 96 states have internal predecessors, (159), 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) [2023-02-14 14:01:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2023-02-14 14:01:53,401 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 16 [2023-02-14 14:01:53,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,402 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2023-02-14 14:01:53,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-02-14 14:01:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2023-02-14 14:01:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 14:01:53,402 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 14:01:53,402 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,403 INFO L85 PathProgramCache]: Analyzing trace with hash -691559200, now seen corresponding path program 1 times [2023-02-14 14:01:53,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294767874] [2023-02-14 14:01:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294767874] [2023-02-14 14:01:53,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294767874] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323447262] [2023-02-14 14:01:53,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,447 INFO L87 Difference]: Start difference. First operand 97 states and 159 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-02-14 14:01:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,455 INFO L93 Difference]: Finished difference Result 183 states and 292 transitions. [2023-02-14 14:01:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-02-14 14:01:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,459 INFO L225 Difference]: With dead ends: 183 [2023-02-14 14:01:53,459 INFO L226 Difference]: Without dead ends: 183 [2023-02-14 14:01:53,459 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,460 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 91 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 [2023-02-14 14:01:53,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 91 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-02-14 14:01:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2023-02-14 14:01:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6166666666666667) internal successors, (291), 180 states have internal predecessors, (291), 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) [2023-02-14 14:01:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2023-02-14 14:01:53,466 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 16 [2023-02-14 14:01:53,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,466 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2023-02-14 14:01:53,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-02-14 14:01:53,466 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2023-02-14 14:01:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 14:01:53,467 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-14 14:01:53,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash -298532190, now seen corresponding path program 1 times [2023-02-14 14:01:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706572051] [2023-02-14 14:01:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706572051] [2023-02-14 14:01:53,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706572051] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444341982] [2023-02-14 14:01:53,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,498 INFO L87 Difference]: Start difference. First operand 181 states and 291 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-02-14 14:01:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,506 INFO L93 Difference]: Finished difference Result 223 states and 360 transitions. [2023-02-14 14:01:53,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-02-14 14:01:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,507 INFO L225 Difference]: With dead ends: 223 [2023-02-14 14:01:53,507 INFO L226 Difference]: Without dead ends: 223 [2023-02-14 14:01:53,507 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,508 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 116 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 [2023-02-14 14:01:53,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 116 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-02-14 14:01:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 181. [2023-02-14 14:01:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 180 states have internal predecessors, (287), 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) [2023-02-14 14:01:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 287 transitions. [2023-02-14 14:01:53,526 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 287 transitions. Word has length 16 [2023-02-14 14:01:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,526 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 287 transitions. [2023-02-14 14:01:53,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-02-14 14:01:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 287 transitions. [2023-02-14 14:01:53,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 14:01:53,527 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-14 14:01:53,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash 36716282, now seen corresponding path program 1 times [2023-02-14 14:01:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450413718] [2023-02-14 14:01:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450413718] [2023-02-14 14:01:53,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450413718] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789204644] [2023-02-14 14:01:53,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,550 INFO L87 Difference]: Start difference. First operand 181 states and 287 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-02-14 14:01:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,560 INFO L93 Difference]: Finished difference Result 323 states and 512 transitions. [2023-02-14 14:01:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-02-14 14:01:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,561 INFO L225 Difference]: With dead ends: 323 [2023-02-14 14:01:53,561 INFO L226 Difference]: Without dead ends: 323 [2023-02-14 14:01:53,561 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,562 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 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 [2023-02-14 14:01:53,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-02-14 14:01:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 257. [2023-02-14 14:01:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.55859375) internal successors, (399), 256 states have internal predecessors, (399), 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) [2023-02-14 14:01:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 399 transitions. [2023-02-14 14:01:53,584 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 399 transitions. Word has length 17 [2023-02-14 14:01:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,584 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 399 transitions. [2023-02-14 14:01:53,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-02-14 14:01:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 399 transitions. [2023-02-14 14:01:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 14:01:53,607 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-14 14:01:53,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash -356310728, now seen corresponding path program 1 times [2023-02-14 14:01:53,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242899925] [2023-02-14 14:01:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242899925] [2023-02-14 14:01:53,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242899925] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845650464] [2023-02-14 14:01:53,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,638 INFO L87 Difference]: Start difference. First operand 257 states and 399 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-02-14 14:01:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,649 INFO L93 Difference]: Finished difference Result 347 states and 524 transitions. [2023-02-14 14:01:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-02-14 14:01:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,650 INFO L225 Difference]: With dead ends: 347 [2023-02-14 14:01:53,650 INFO L226 Difference]: Without dead ends: 347 [2023-02-14 14:01:53,651 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,652 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 104 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 [2023-02-14 14:01:53,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 104 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-02-14 14:01:53,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2023-02-14 14:01:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.5203488372093024) internal successors, (523), 344 states have internal predecessors, (523), 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) [2023-02-14 14:01:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2023-02-14 14:01:53,657 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 17 [2023-02-14 14:01:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,657 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2023-02-14 14:01:53,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-02-14 14:01:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2023-02-14 14:01:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 14:01:53,660 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-14 14:01:53,661 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1138420085, now seen corresponding path program 1 times [2023-02-14 14:01:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769076449] [2023-02-14 14:01:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769076449] [2023-02-14 14:01:53,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769076449] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729517054] [2023-02-14 14:01:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,697 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-02-14 14:01:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,706 INFO L93 Difference]: Finished difference Result 359 states and 532 transitions. [2023-02-14 14:01:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-02-14 14:01:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,708 INFO L225 Difference]: With dead ends: 359 [2023-02-14 14:01:53,708 INFO L226 Difference]: Without dead ends: 359 [2023-02-14 14:01:53,708 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,709 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 32 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 100 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 [2023-02-14 14:01:53,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 100 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-02-14 14:01:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2023-02-14 14:01:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.4915730337078652) internal successors, (531), 356 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) [2023-02-14 14:01:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2023-02-14 14:01:53,719 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 18 [2023-02-14 14:01:53,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,720 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2023-02-14 14:01:53,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-02-14 14:01:53,720 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2023-02-14 14:01:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 14:01:53,721 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-14 14:01:53,722 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1839484663, now seen corresponding path program 1 times [2023-02-14 14:01:53,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663423023] [2023-02-14 14:01:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663423023] [2023-02-14 14:01:53,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663423023] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652912580] [2023-02-14 14:01:53,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,764 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-02-14 14:01:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,775 INFO L93 Difference]: Finished difference Result 615 states and 908 transitions. [2023-02-14 14:01:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-02-14 14:01:53,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,777 INFO L225 Difference]: With dead ends: 615 [2023-02-14 14:01:53,777 INFO L226 Difference]: Without dead ends: 615 [2023-02-14 14:01:53,778 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,778 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 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 [2023-02-14 14:01:53,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-02-14 14:01:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 517. [2023-02-14 14:01:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.447674418604651) internal successors, (747), 516 states have internal predecessors, (747), 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) [2023-02-14 14:01:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 747 transitions. [2023-02-14 14:01:53,786 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 747 transitions. Word has length 18 [2023-02-14 14:01:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,787 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 747 transitions. [2023-02-14 14:01:53,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-02-14 14:01:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 747 transitions. [2023-02-14 14:01:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 14:01:53,788 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-14 14:01:53,788 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1446457653, now seen corresponding path program 1 times [2023-02-14 14:01:53,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730767434] [2023-02-14 14:01:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730767434] [2023-02-14 14:01:53,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730767434] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804706983] [2023-02-14 14:01:53,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,819 INFO L87 Difference]: Start difference. First operand 517 states and 747 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-02-14 14:01:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,828 INFO L93 Difference]: Finished difference Result 679 states and 948 transitions. [2023-02-14 14:01:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-02-14 14:01:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,831 INFO L225 Difference]: With dead ends: 679 [2023-02-14 14:01:53,831 INFO L226 Difference]: Without dead ends: 679 [2023-02-14 14:01:53,832 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,832 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 105 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 [2023-02-14 14:01:53,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-02-14 14:01:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2023-02-14 14:01:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.400887573964497) internal successors, (947), 676 states have internal predecessors, (947), 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) [2023-02-14 14:01:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 947 transitions. [2023-02-14 14:01:53,841 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 947 transitions. Word has length 18 [2023-02-14 14:01:53,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,841 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 947 transitions. [2023-02-14 14:01:53,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-02-14 14:01:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 947 transitions. [2023-02-14 14:01:53,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 14:01:53,842 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-14 14:01:53,843 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1189665389, now seen corresponding path program 1 times [2023-02-14 14:01:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35405201] [2023-02-14 14:01:53,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35405201] [2023-02-14 14:01:53,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35405201] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167447031] [2023-02-14 14:01:53,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,874 INFO L87 Difference]: Start difference. First operand 677 states and 947 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) [2023-02-14 14:01:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,884 INFO L93 Difference]: Finished difference Result 695 states and 948 transitions. [2023-02-14 14:01:53,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,884 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 [2023-02-14 14:01:53,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,886 INFO L225 Difference]: With dead ends: 695 [2023-02-14 14:01:53,886 INFO L226 Difference]: Without dead ends: 695 [2023-02-14 14:01:53,886 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,887 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 31 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 96 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 [2023-02-14 14:01:53,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 96 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-02-14 14:01:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2023-02-14 14:01:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.3684971098265897) internal successors, (947), 692 states have internal predecessors, (947), 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) [2023-02-14 14:01:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 947 transitions. [2023-02-14 14:01:53,895 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 947 transitions. Word has length 19 [2023-02-14 14:01:53,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,896 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 947 transitions. [2023-02-14 14:01:53,896 INFO L496 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) [2023-02-14 14:01:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 947 transitions. [2023-02-14 14:01:53,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 14:01:53,897 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-14 14:01:53,898 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1890729967, now seen corresponding path program 1 times [2023-02-14 14:01:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914698754] [2023-02-14 14:01:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914698754] [2023-02-14 14:01:53,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914698754] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627907811] [2023-02-14 14:01:53,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,930 INFO L87 Difference]: Start difference. First operand 693 states and 947 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) [2023-02-14 14:01:53,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,940 INFO L93 Difference]: Finished difference Result 1159 states and 1556 transitions. [2023-02-14 14:01:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,941 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 [2023-02-14 14:01:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,943 INFO L225 Difference]: With dead ends: 1159 [2023-02-14 14:01:53,943 INFO L226 Difference]: Without dead ends: 1159 [2023-02-14 14:01:53,944 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:53,944 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 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 [2023-02-14 14:01:53,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-02-14 14:01:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1029. [2023-02-14 14:01:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.325875486381323) internal successors, (1363), 1028 states have internal predecessors, (1363), 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) [2023-02-14 14:01:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2023-02-14 14:01:53,958 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 19 [2023-02-14 14:01:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:53,959 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2023-02-14 14:01:53,959 INFO L496 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) [2023-02-14 14:01:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2023-02-14 14:01:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 14:01:53,960 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:53,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:53,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-14 14:01:53,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:53,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:53,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1497702957, now seen corresponding path program 1 times [2023-02-14 14:01:53,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:53,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869327539] [2023-02-14 14:01:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:53,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869327539] [2023-02-14 14:01:53,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869327539] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:53,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:53,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:53,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562294059] [2023-02-14 14:01:53,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:53,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:53,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:53,982 INFO L87 Difference]: Start difference. First operand 1029 states and 1363 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) [2023-02-14 14:01:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:53,994 INFO L93 Difference]: Finished difference Result 1319 states and 1668 transitions. [2023-02-14 14:01:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:53,995 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 [2023-02-14 14:01:53,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:53,998 INFO L225 Difference]: With dead ends: 1319 [2023-02-14 14:01:53,998 INFO L226 Difference]: Without dead ends: 1319 [2023-02-14 14:01:53,999 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:54,000 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 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 [2023-02-14 14:01:54,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:54,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-02-14 14:01:54,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2023-02-14 14:01:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.2667173252279635) internal successors, (1667), 1316 states have internal predecessors, (1667), 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) [2023-02-14 14:01:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1667 transitions. [2023-02-14 14:01:54,015 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1667 transitions. Word has length 19 [2023-02-14 14:01:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:54,016 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1667 transitions. [2023-02-14 14:01:54,017 INFO L496 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) [2023-02-14 14:01:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1667 transitions. [2023-02-14 14:01:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 14:01:54,018 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:54,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:54,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-14 14:01:54,018 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:54,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:54,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1516697142, now seen corresponding path program 1 times [2023-02-14 14:01:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:54,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071826701] [2023-02-14 14:01:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:54,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:54,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:54,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071826701] [2023-02-14 14:01:54,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071826701] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:54,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:54,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:54,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466167785] [2023-02-14 14:01:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:54,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:54,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:54,035 INFO L87 Difference]: Start difference. First operand 1317 states and 1667 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) [2023-02-14 14:01:54,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:54,044 INFO L93 Difference]: Finished difference Result 1351 states and 1668 transitions. [2023-02-14 14:01:54,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:54,044 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 [2023-02-14 14:01:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:54,047 INFO L225 Difference]: With dead ends: 1351 [2023-02-14 14:01:54,047 INFO L226 Difference]: Without dead ends: 1351 [2023-02-14 14:01:54,047 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:54,047 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 92 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 [2023-02-14 14:01:54,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 92 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-02-14 14:01:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2023-02-14 14:01:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.236646884272997) internal successors, (1667), 1348 states have internal predecessors, (1667), 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) [2023-02-14 14:01:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1667 transitions. [2023-02-14 14:01:54,064 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1667 transitions. Word has length 20 [2023-02-14 14:01:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:54,064 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1667 transitions. [2023-02-14 14:01:54,064 INFO L496 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) [2023-02-14 14:01:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1667 transitions. [2023-02-14 14:01:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 14:01:54,075 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:54,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:54,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-14 14:01:54,075 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:54,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:54,076 INFO L85 PathProgramCache]: Analyzing trace with hash -815632564, now seen corresponding path program 1 times [2023-02-14 14:01:54,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:54,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756101937] [2023-02-14 14:01:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:54,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:54,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756101937] [2023-02-14 14:01:54,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756101937] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:54,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:54,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:54,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41746291] [2023-02-14 14:01:54,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:54,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:54,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:54,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:54,088 INFO L87 Difference]: Start difference. First operand 1349 states and 1667 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) [2023-02-14 14:01:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:54,098 INFO L93 Difference]: Finished difference Result 2181 states and 2595 transitions. [2023-02-14 14:01:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:54,098 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 [2023-02-14 14:01:54,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:54,103 INFO L225 Difference]: With dead ends: 2181 [2023-02-14 14:01:54,103 INFO L226 Difference]: Without dead ends: 2181 [2023-02-14 14:01:54,103 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:54,104 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 78 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 [2023-02-14 14:01:54,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 78 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2023-02-14 14:01:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2053. [2023-02-14 14:01:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 1.2022417153996101) internal successors, (2467), 2052 states have internal predecessors, (2467), 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) [2023-02-14 14:01:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2467 transitions. [2023-02-14 14:01:54,126 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2467 transitions. Word has length 20 [2023-02-14 14:01:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:54,126 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 2467 transitions. [2023-02-14 14:01:54,126 INFO L496 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) [2023-02-14 14:01:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2467 transitions. [2023-02-14 14:01:54,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 14:01:54,128 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:54,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:54,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-14 14:01:54,129 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 14:01:54,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1208659574, now seen corresponding path program 1 times [2023-02-14 14:01:54,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:01:54,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33717378] [2023-02-14 14:01:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:54,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:01:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:54,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:01:54,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33717378] [2023-02-14 14:01:54,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33717378] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:54,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:54,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:01:54,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350542057] [2023-02-14 14:01:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:54,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:01:54,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:01:54,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:01:54,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:01:54,142 INFO L87 Difference]: Start difference. First operand 2053 states and 2467 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) [2023-02-14 14:01:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:54,154 INFO L93 Difference]: Finished difference Result 2563 states and 2882 transitions. [2023-02-14 14:01:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:01:54,154 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 [2023-02-14 14:01:54,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:54,154 INFO L225 Difference]: With dead ends: 2563 [2023-02-14 14:01:54,154 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 14:01:54,155 INFO L412 NwaCegarLoop]: 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 [2023-02-14 14:01:54,155 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 105 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 [2023-02-14 14:01:54,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:01:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 14:01:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 14:01:54,156 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) [2023-02-14 14:01:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 14:01:54,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-02-14 14:01:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:54,156 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:01:54,156 INFO L496 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) [2023-02-14 14:01:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 14:01:54,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 14:01:54,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2023-02-14 14:01:54,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2023-02-14 14:01:54,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-14 14:01:54,161 INFO L445 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] [2023-02-14 14:01:54,163 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 14:01:54,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 02:01:54 BoogieIcfgContainer [2023-02-14 14:01:54,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 14:01:54,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 14:01:54,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 14:01:54,165 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 14:01:54,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:01:52" (3/4) ... [2023-02-14 14:01:54,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 14:01:54,173 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-14 14:01:54,174 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 14:01:54,174 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-14 14:01:54,174 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 14:01:54,195 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 14:01:54,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 14:01:54,195 INFO L158 Benchmark]: Toolchain (without parser) took 2207.50ms. Allocated memory was 155.2MB in the beginning and 192.9MB in the end (delta: 37.7MB). Free memory was 123.2MB in the beginning and 121.3MB in the end (delta: 1.9MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-02-14 14:01:54,195 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:01:54,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.67ms. Allocated memory is still 155.2MB. Free memory was 122.7MB in the beginning and 112.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 14:01:54,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.28ms. Allocated memory is still 155.2MB. Free memory was 112.6MB in the beginning and 110.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 14:01:54,196 INFO L158 Benchmark]: Boogie Preprocessor took 23.29ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 109.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 14:01:54,196 INFO L158 Benchmark]: RCFGBuilder took 240.25ms. Allocated memory is still 155.2MB. Free memory was 109.3MB in the beginning and 97.4MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 14:01:54,196 INFO L158 Benchmark]: TraceAbstraction took 1711.31ms. Allocated memory was 155.2MB in the beginning and 192.9MB in the end (delta: 37.7MB). Free memory was 96.7MB in the beginning and 124.4MB in the end (delta: -27.7MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-02-14 14:01:54,197 INFO L158 Benchmark]: Witness Printer took 30.24ms. Allocated memory is still 192.9MB. Free memory was 124.4MB in the beginning and 121.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 14:01:54,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.67ms. Allocated memory is still 155.2MB. Free memory was 122.7MB in the beginning and 112.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.28ms. Allocated memory is still 155.2MB. Free memory was 112.6MB in the beginning and 110.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.29ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 109.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 240.25ms. Allocated memory is still 155.2MB. Free memory was 109.3MB in the beginning and 97.4MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1711.31ms. Allocated memory was 155.2MB in the beginning and 192.9MB in the end (delta: 37.7MB). Free memory was 96.7MB in the beginning and 124.4MB in the end (delta: -27.7MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 30.24ms. Allocated memory is still 192.9MB. Free memory was 124.4MB in the beginning and 121.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 121]: 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, 32 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 583 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 583 mSDsluCounter, 1946 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 725 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 1221 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2053occurred in iteration=20, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 528 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 639 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 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! [2023-02-14 14:01:54,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE