./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 35987657 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/ntdrivers-simplified/floppy_simpl3.cil-2.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 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:55:51,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:55:51,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:55:51,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:55:51,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:55:51,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:55:51,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:55:51,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:55:51,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:55:51,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:55:51,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:55:51,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:55:51,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:55:51,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:55:51,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:55:51,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:55:51,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:55:51,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:55:51,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:55:51,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:55:51,488 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:55:51,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:55:51,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:55:51,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:55:51,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:55:51,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:55:51,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:55:51,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:55:51,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:55:51,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:55:51,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:55:51,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:55:51,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:55:51,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:55:51,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:55:51,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:55:51,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:55:51,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:55:51,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:55:51,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:55:51,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:55:51,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:55:51,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 17:55:51,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:55:51,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:55:51,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:55:51,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:55:51,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:55:51,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:55:51,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:55:51,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:55:51,542 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:55:51,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:55:51,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:55:51,543 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:55:51,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:55:51,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:55:51,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:55:51,544 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:55:51,544 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:55:51,544 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:55:51,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:55:51,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:55:51,545 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:55:51,545 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:55:51,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:55:51,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:55:51,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:55:51,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:55:51,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:55:51,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:55:51,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 17:55:51,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 17:55:51,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa [2022-07-21 17:55:51,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:55:51,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:55:51,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:55:51,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:55:51,909 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:55:51,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2022-07-21 17:55:51,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaa9ce517/57dcdc4deaab4fc6b33f1562daeb65db/FLAG431328575 [2022-07-21 17:55:52,527 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:55:52,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2022-07-21 17:55:52,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaa9ce517/57dcdc4deaab4fc6b33f1562daeb65db/FLAG431328575 [2022-07-21 17:55:52,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaa9ce517/57dcdc4deaab4fc6b33f1562daeb65db [2022-07-21 17:55:52,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:55:52,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:55:52,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:55:52,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:55:52,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:55:52,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:55:52" (1/1) ... [2022-07-21 17:55:52,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ceec0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:52, skipping insertion in model container [2022-07-21 17:55:52,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:55:52" (1/1) ... [2022-07-21 17:55:52,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:55:52,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:55:53,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2022-07-21 17:55:53,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:55:53,157 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 17:55:53,170 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2022-07-21 17:55:53,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:55:53,259 INFO L208 MainTranslator]: Completed translation [2022-07-21 17:55:53,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53 WrapperNode [2022-07-21 17:55:53,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:55:53,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 17:55:53,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 17:55:53,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 17:55:53,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,332 INFO L137 Inliner]: procedures = 38, calls = 62, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 916 [2022-07-21 17:55:53,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 17:55:53,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 17:55:53,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 17:55:53,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 17:55:53,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 17:55:53,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 17:55:53,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 17:55:53,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 17:55:53,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (1/1) ... [2022-07-21 17:55:53,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:55:53,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:53,425 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) [2022-07-21 17:55:53,449 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 [2022-07-21 17:55:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 17:55:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-21 17:55:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-21 17:55:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-07-21 17:55:53,466 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-07-21 17:55:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-07-21 17:55:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-07-21 17:55:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-21 17:55:53,467 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-21 17:55:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 17:55:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-21 17:55:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-21 17:55:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 17:55:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 17:55:53,621 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 17:55:53,623 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 17:55:53,629 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,731 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-07-21 17:55:53,731 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-07-21 17:55:53,732 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,741 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-21 17:55:53,742 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-21 17:55:53,752 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,755 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,759 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,763 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,764 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,767 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,769 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,770 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:53,774 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:54,259 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume !false; [2022-07-21 17:55:54,260 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume false; [2022-07-21 17:55:54,260 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !false; [2022-07-21 17:55:54,260 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume false; [2022-07-21 17:55:54,260 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2022-07-21 17:55:54,260 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2022-07-21 17:55:54,260 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2022-07-21 17:55:54,261 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2022-07-21 17:55:54,261 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume !false; [2022-07-21 17:55:54,261 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume false; [2022-07-21 17:55:54,261 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-07-21 17:55:54,261 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-07-21 17:55:54,261 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2022-07-21 17:55:54,262 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2022-07-21 17:55:54,262 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume !false; [2022-07-21 17:55:54,262 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##118: assume false; [2022-07-21 17:55:54,262 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume false; [2022-07-21 17:55:54,262 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume !false; [2022-07-21 17:55:54,265 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:55:54,300 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-07-21 17:55:54,301 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-07-21 17:55:54,312 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 17:55:54,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 17:55:54,323 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 17:55:54,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:55:54 BoogieIcfgContainer [2022-07-21 17:55:54,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 17:55:54,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 17:55:54,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 17:55:54,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 17:55:54,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:55:52" (1/3) ... [2022-07-21 17:55:54,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b027da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:55:54, skipping insertion in model container [2022-07-21 17:55:54,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:55:53" (2/3) ... [2022-07-21 17:55:54,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b027da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:55:54, skipping insertion in model container [2022-07-21 17:55:54,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:55:54" (3/3) ... [2022-07-21 17:55:54,337 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2022-07-21 17:55:54,351 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 17:55:54,351 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 17:55:54,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 17:55:54,421 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24eea46d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57765e5e [2022-07-21 17:55:54,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 17:55:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-21 17:55:54,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 17:55:54,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:54,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:54,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:54,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash -379437591, now seen corresponding path program 1 times [2022-07-21 17:55:54,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:54,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954552128] [2022-07-21 17:55:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:54,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:54,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:54,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954552128] [2022-07-21 17:55:54,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954552128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:54,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:54,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:54,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048679241] [2022-07-21 17:55:54,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:54,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:54,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:54,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:54,668 INFO L87 Difference]: Start difference. First operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-07-21 17:55:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:54,721 INFO L93 Difference]: Finished difference Result 237 states and 338 transitions. [2022-07-21 17:55:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:54,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-07-21 17:55:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:54,734 INFO L225 Difference]: With dead ends: 237 [2022-07-21 17:55:54,734 INFO L226 Difference]: Without dead ends: 235 [2022-07-21 17:55:54,736 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 [2022-07-21 17:55:54,739 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 194 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:54,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:54,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-07-21 17:55:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2022-07-21 17:55:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 211 states have internal predecessors, (279), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 17:55:54,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 335 transitions. [2022-07-21 17:55:54,801 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 335 transitions. Word has length 8 [2022-07-21 17:55:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:54,801 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 335 transitions. [2022-07-21 17:55:54,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-07-21 17:55:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 335 transitions. [2022-07-21 17:55:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 17:55:54,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:54,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:54,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 17:55:54,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:54,807 INFO L85 PathProgramCache]: Analyzing trace with hash 229440230, now seen corresponding path program 1 times [2022-07-21 17:55:54,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:54,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250925375] [2022-07-21 17:55:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:54,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:54,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:54,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250925375] [2022-07-21 17:55:54,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250925375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:54,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:54,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:55:54,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329372103] [2022-07-21 17:55:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:54,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:54,852 INFO L87 Difference]: Start difference. First operand 234 states and 335 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-07-21 17:55:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:54,897 INFO L93 Difference]: Finished difference Result 233 states and 334 transitions. [2022-07-21 17:55:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:54,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-07-21 17:55:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:54,900 INFO L225 Difference]: With dead ends: 233 [2022-07-21 17:55:54,900 INFO L226 Difference]: Without dead ends: 229 [2022-07-21 17:55:54,900 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 [2022-07-21 17:55:54,901 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 214 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:54,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 392 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-21 17:55:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-07-21 17:55:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 206 states have internal predecessors, (266), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 17:55:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2022-07-21 17:55:54,916 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 11 [2022-07-21 17:55:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:54,916 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2022-07-21 17:55:54,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-07-21 17:55:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2022-07-21 17:55:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 17:55:54,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:54,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:54,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 17:55:54,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 23733269, now seen corresponding path program 1 times [2022-07-21 17:55:54,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:54,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147898378] [2022-07-21 17:55:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:54,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:54,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147898378] [2022-07-21 17:55:54,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147898378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:54,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:54,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:54,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259872539] [2022-07-21 17:55:54,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:54,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:54,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:54,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:54,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:54,985 INFO L87 Difference]: Start difference. First operand 229 states and 322 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:55,074 INFO L93 Difference]: Finished difference Result 344 states and 482 transitions. [2022-07-21 17:55:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:55,075 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-21 17:55:55,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:55,077 INFO L225 Difference]: With dead ends: 344 [2022-07-21 17:55:55,078 INFO L226 Difference]: Without dead ends: 343 [2022-07-21 17:55:55,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:55,079 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 251 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:55,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 583 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-21 17:55:55,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 326. [2022-07-21 17:55:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 285 states have internal predecessors, (383), 37 states have call successors, (37), 9 states have call predecessors, (37), 7 states have return successors, (40), 32 states have call predecessors, (40), 27 states have call successors, (40) [2022-07-21 17:55:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 460 transitions. [2022-07-21 17:55:55,100 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 460 transitions. Word has length 18 [2022-07-21 17:55:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:55,101 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 460 transitions. [2022-07-21 17:55:55,101 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 460 transitions. [2022-07-21 17:55:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 17:55:55,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:55,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:55,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 17:55:55,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:55,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1035240094, now seen corresponding path program 1 times [2022-07-21 17:55:55,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:55,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568116115] [2022-07-21 17:55:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:55,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:55,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:55,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568116115] [2022-07-21 17:55:55,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568116115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:55,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:55,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207574206] [2022-07-21 17:55:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:55,176 INFO L87 Difference]: Start difference. First operand 326 states and 460 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:55,204 INFO L93 Difference]: Finished difference Result 512 states and 717 transitions. [2022-07-21 17:55:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:55,204 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-21 17:55:55,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:55,210 INFO L225 Difference]: With dead ends: 512 [2022-07-21 17:55:55,210 INFO L226 Difference]: Without dead ends: 512 [2022-07-21 17:55:55,211 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 [2022-07-21 17:55:55,213 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 273 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:55,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 479 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:55,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-21 17:55:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2022-07-21 17:55:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 423 states have (on average 1.3617021276595744) internal successors, (576), 424 states have internal predecessors, (576), 47 states have call successors, (47), 17 states have call predecessors, (47), 14 states have return successors, (61), 44 states have call predecessors, (61), 39 states have call successors, (61) [2022-07-21 17:55:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 684 transitions. [2022-07-21 17:55:55,244 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 684 transitions. Word has length 19 [2022-07-21 17:55:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:55,244 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 684 transitions. [2022-07-21 17:55:55,245 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 684 transitions. [2022-07-21 17:55:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 17:55:55,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:55,246 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, 1, 1] [2022-07-21 17:55:55,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 17:55:55,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:55,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1224032788, now seen corresponding path program 1 times [2022-07-21 17:55:55,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:55,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103957373] [2022-07-21 17:55:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:55,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:55,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:55,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103957373] [2022-07-21 17:55:55,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103957373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:55,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:55,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:55,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946151418] [2022-07-21 17:55:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:55,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:55,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:55,318 INFO L87 Difference]: Start difference. First operand 485 states and 684 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:55,345 INFO L93 Difference]: Finished difference Result 556 states and 772 transitions. [2022-07-21 17:55:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-21 17:55:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:55,349 INFO L225 Difference]: With dead ends: 556 [2022-07-21 17:55:55,349 INFO L226 Difference]: Without dead ends: 556 [2022-07-21 17:55:55,350 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 [2022-07-21 17:55:55,350 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 277 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:55,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 384 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:55,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-07-21 17:55:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 523. [2022-07-21 17:55:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 455 states have (on average 1.3604395604395605) internal successors, (619), 462 states have internal predecessors, (619), 49 states have call successors, (49), 20 states have call predecessors, (49), 18 states have return successors, (65), 42 states have call predecessors, (65), 42 states have call successors, (65) [2022-07-21 17:55:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 733 transitions. [2022-07-21 17:55:55,372 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 733 transitions. Word has length 22 [2022-07-21 17:55:55,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:55,373 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 733 transitions. [2022-07-21 17:55:55,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 733 transitions. [2022-07-21 17:55:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 17:55:55,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:55,379 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:55,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 17:55:55,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash -222747689, now seen corresponding path program 1 times [2022-07-21 17:55:55,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:55,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618275961] [2022-07-21 17:55:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:55,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:55,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:55,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618275961] [2022-07-21 17:55:55,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618275961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:55,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:55,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751709128] [2022-07-21 17:55:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:55,456 INFO L87 Difference]: Start difference. First operand 523 states and 733 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:55,529 INFO L93 Difference]: Finished difference Result 803 states and 1126 transitions. [2022-07-21 17:55:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-21 17:55:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:55,533 INFO L225 Difference]: With dead ends: 803 [2022-07-21 17:55:55,533 INFO L226 Difference]: Without dead ends: 803 [2022-07-21 17:55:55,534 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 [2022-07-21 17:55:55,534 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 120 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 662 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-07-21 17:55:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 614. [2022-07-21 17:55:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 540 states have (on average 1.3685185185185185) internal successors, (739), 550 states have internal predecessors, (739), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-21 17:55:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 862 transitions. [2022-07-21 17:55:55,554 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 862 transitions. Word has length 27 [2022-07-21 17:55:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:55,554 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 862 transitions. [2022-07-21 17:55:55,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 862 transitions. [2022-07-21 17:55:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 17:55:55,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:55,556 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:55,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 17:55:55,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1446649383, now seen corresponding path program 1 times [2022-07-21 17:55:55,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:55,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172686481] [2022-07-21 17:55:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:55,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:55,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:55,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172686481] [2022-07-21 17:55:55,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172686481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:55,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:55,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942315960] [2022-07-21 17:55:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:55,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:55,622 INFO L87 Difference]: Start difference. First operand 614 states and 862 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:55,811 INFO L93 Difference]: Finished difference Result 639 states and 882 transitions. [2022-07-21 17:55:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:55:55,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-21 17:55:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:55,814 INFO L225 Difference]: With dead ends: 639 [2022-07-21 17:55:55,814 INFO L226 Difference]: Without dead ends: 639 [2022-07-21 17:55:55,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:55,815 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 513 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:55,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 527 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-21 17:55:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 605. [2022-07-21 17:55:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 531 states have (on average 1.3521657250470809) internal successors, (718), 541 states have internal predecessors, (718), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-21 17:55:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 841 transitions. [2022-07-21 17:55:55,831 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 841 transitions. Word has length 28 [2022-07-21 17:55:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:55,832 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 841 transitions. [2022-07-21 17:55:55,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 841 transitions. [2022-07-21 17:55:55,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 17:55:55,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:55,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:55,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 17:55:55,835 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:55,835 INFO L85 PathProgramCache]: Analyzing trace with hash -266296252, now seen corresponding path program 1 times [2022-07-21 17:55:55,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:55,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026523511] [2022-07-21 17:55:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:55,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:55,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:55,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026523511] [2022-07-21 17:55:55,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026523511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:55,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:55,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:55,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225301242] [2022-07-21 17:55:55,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:55,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:55,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:55,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:55,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:55,871 INFO L87 Difference]: Start difference. First operand 605 states and 841 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:56,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:56,007 INFO L93 Difference]: Finished difference Result 645 states and 893 transitions. [2022-07-21 17:55:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:56,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-07-21 17:55:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:56,011 INFO L225 Difference]: With dead ends: 645 [2022-07-21 17:55:56,011 INFO L226 Difference]: Without dead ends: 645 [2022-07-21 17:55:56,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:56,012 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 64 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:56,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 735 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-07-21 17:55:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 626. [2022-07-21 17:55:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 552 states have (on average 1.3496376811594204) internal successors, (745), 561 states have internal predecessors, (745), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-21 17:55:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 868 transitions. [2022-07-21 17:55:56,028 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 868 transitions. Word has length 29 [2022-07-21 17:55:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:56,028 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 868 transitions. [2022-07-21 17:55:56,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 868 transitions. [2022-07-21 17:55:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 17:55:56,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:56,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:56,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 17:55:56,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:56,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash 786936120, now seen corresponding path program 1 times [2022-07-21 17:55:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:56,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337578407] [2022-07-21 17:55:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:56,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337578407] [2022-07-21 17:55:56,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337578407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:56,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:56,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6057828] [2022-07-21 17:55:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:56,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:56,124 INFO L87 Difference]: Start difference. First operand 626 states and 868 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:56,298 INFO L93 Difference]: Finished difference Result 645 states and 892 transitions. [2022-07-21 17:55:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:56,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-21 17:55:56,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:56,302 INFO L225 Difference]: With dead ends: 645 [2022-07-21 17:55:56,302 INFO L226 Difference]: Without dead ends: 645 [2022-07-21 17:55:56,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:56,304 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 393 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:56,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 701 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-07-21 17:55:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 626. [2022-07-21 17:55:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 552 states have (on average 1.3478260869565217) internal successors, (744), 561 states have internal predecessors, (744), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-21 17:55:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 867 transitions. [2022-07-21 17:55:56,320 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 867 transitions. Word has length 30 [2022-07-21 17:55:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:56,320 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 867 transitions. [2022-07-21 17:55:56,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 867 transitions. [2022-07-21 17:55:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 17:55:56,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:56,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:56,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 17:55:56,322 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1995000776, now seen corresponding path program 1 times [2022-07-21 17:55:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:56,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645293348] [2022-07-21 17:55:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:56,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:56,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645293348] [2022-07-21 17:55:56,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645293348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:56,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:56,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:56,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038339264] [2022-07-21 17:55:56,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:56,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:56,352 INFO L87 Difference]: Start difference. First operand 626 states and 867 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:56,399 INFO L93 Difference]: Finished difference Result 638 states and 883 transitions. [2022-07-21 17:55:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-21 17:55:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:56,403 INFO L225 Difference]: With dead ends: 638 [2022-07-21 17:55:56,403 INFO L226 Difference]: Without dead ends: 638 [2022-07-21 17:55:56,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:56,404 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 16 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:56,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 547 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:56,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-07-21 17:55:56,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 637. [2022-07-21 17:55:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 563 states have (on average 1.3463587921847247) internal successors, (758), 571 states have internal predecessors, (758), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-21 17:55:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 881 transitions. [2022-07-21 17:55:56,417 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 881 transitions. Word has length 30 [2022-07-21 17:55:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:56,418 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 881 transitions. [2022-07-21 17:55:56,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 881 transitions. [2022-07-21 17:55:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-21 17:55:56,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:56,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:56,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 17:55:56,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2060099377, now seen corresponding path program 1 times [2022-07-21 17:55:56,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:56,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255787355] [2022-07-21 17:55:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:56,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:56,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:56,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:56,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255787355] [2022-07-21 17:55:56,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255787355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:56,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:56,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:56,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646488358] [2022-07-21 17:55:56,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:56,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:56,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:56,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:56,501 INFO L87 Difference]: Start difference. First operand 637 states and 881 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:56,711 INFO L93 Difference]: Finished difference Result 656 states and 905 transitions. [2022-07-21 17:55:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:56,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-07-21 17:55:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:56,719 INFO L225 Difference]: With dead ends: 656 [2022-07-21 17:55:56,719 INFO L226 Difference]: Without dead ends: 656 [2022-07-21 17:55:56,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:56,721 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 374 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:56,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 911 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:56,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-21 17:55:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 637. [2022-07-21 17:55:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 563 states have (on average 1.344582593250444) internal successors, (757), 571 states have internal predecessors, (757), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-21 17:55:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 880 transitions. [2022-07-21 17:55:56,759 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 880 transitions. Word has length 31 [2022-07-21 17:55:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:56,759 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 880 transitions. [2022-07-21 17:55:56,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 880 transitions. [2022-07-21 17:55:56,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 17:55:56,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:56,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:56,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 17:55:56,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:56,761 INFO L85 PathProgramCache]: Analyzing trace with hash -477345279, now seen corresponding path program 1 times [2022-07-21 17:55:56,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:56,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746381106] [2022-07-21 17:55:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:56,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 17:55:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:56,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:56,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746381106] [2022-07-21 17:55:56,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746381106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:56,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:56,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:55:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882790188] [2022-07-21 17:55:56,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:56,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:56,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:56,796 INFO L87 Difference]: Start difference. First operand 637 states and 880 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:56,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:56,919 INFO L93 Difference]: Finished difference Result 665 states and 914 transitions. [2022-07-21 17:55:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:56,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-07-21 17:55:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:56,922 INFO L225 Difference]: With dead ends: 665 [2022-07-21 17:55:56,922 INFO L226 Difference]: Without dead ends: 652 [2022-07-21 17:55:56,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:56,923 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 52 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:56,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1069 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-07-21 17:55:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 635. [2022-07-21 17:55:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 562 states have (on average 1.3434163701067616) internal successors, (755), 570 states have internal predecessors, (755), 50 states have call successors, (50), 23 states have call predecessors, (50), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2022-07-21 17:55:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 876 transitions. [2022-07-21 17:55:56,951 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 876 transitions. Word has length 32 [2022-07-21 17:55:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:56,954 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 876 transitions. [2022-07-21 17:55:56,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 876 transitions. [2022-07-21 17:55:56,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 17:55:56,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:56,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:56,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 17:55:56,956 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1919528188, now seen corresponding path program 1 times [2022-07-21 17:55:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:56,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105530183] [2022-07-21 17:55:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:56,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105530183] [2022-07-21 17:55:56,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105530183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:56,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:56,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:55:56,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150551396] [2022-07-21 17:55:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:55:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:55:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:55:56,991 INFO L87 Difference]: Start difference. First operand 635 states and 876 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:57,039 INFO L93 Difference]: Finished difference Result 643 states and 887 transitions. [2022-07-21 17:55:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:55:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-21 17:55:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:57,047 INFO L225 Difference]: With dead ends: 643 [2022-07-21 17:55:57,047 INFO L226 Difference]: Without dead ends: 643 [2022-07-21 17:55:57,047 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 [2022-07-21 17:55:57,050 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 5 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:57,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 558 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-07-21 17:55:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2022-07-21 17:55:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 570 states have (on average 1.343859649122807) internal successors, (766), 578 states have internal predecessors, (766), 50 states have call successors, (50), 23 states have call predecessors, (50), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2022-07-21 17:55:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 887 transitions. [2022-07-21 17:55:57,072 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 887 transitions. Word has length 34 [2022-07-21 17:55:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:57,072 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 887 transitions. [2022-07-21 17:55:57,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:55:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 887 transitions. [2022-07-21 17:55:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 17:55:57,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:57,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:57,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 17:55:57,075 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash 197237323, now seen corresponding path program 1 times [2022-07-21 17:55:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:57,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712694346] [2022-07-21 17:55:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:57,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:57,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:57,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:57,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712694346] [2022-07-21 17:55:57,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712694346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:57,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:57,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:55:57,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695418885] [2022-07-21 17:55:57,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:57,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:55:57,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:57,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:55:57,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:57,141 INFO L87 Difference]: Start difference. First operand 643 states and 887 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:57,356 INFO L93 Difference]: Finished difference Result 468 states and 616 transitions. [2022-07-21 17:55:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:55:57,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-07-21 17:55:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:57,359 INFO L225 Difference]: With dead ends: 468 [2022-07-21 17:55:57,359 INFO L226 Difference]: Without dead ends: 468 [2022-07-21 17:55:57,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:57,361 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 382 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:57,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 824 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-07-21 17:55:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 427. [2022-07-21 17:55:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 375 states have (on average 1.312) internal successors, (492), 383 states have internal predecessors, (492), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-21 17:55:57,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 566 transitions. [2022-07-21 17:55:57,373 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 566 transitions. Word has length 38 [2022-07-21 17:55:57,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:57,374 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 566 transitions. [2022-07-21 17:55:57,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 566 transitions. [2022-07-21 17:55:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 17:55:57,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:57,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:57,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 17:55:57,377 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1089851695, now seen corresponding path program 1 times [2022-07-21 17:55:57,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:57,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111546955] [2022-07-21 17:55:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:57,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:57,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111546955] [2022-07-21 17:55:57,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111546955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:57,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:57,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:57,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654242139] [2022-07-21 17:55:57,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:57,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:57,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:57,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:57,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:57,510 INFO L87 Difference]: Start difference. First operand 427 states and 566 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:57,664 INFO L93 Difference]: Finished difference Result 422 states and 554 transitions. [2022-07-21 17:55:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-21 17:55:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:57,667 INFO L225 Difference]: With dead ends: 422 [2022-07-21 17:55:57,667 INFO L226 Difference]: Without dead ends: 422 [2022-07-21 17:55:57,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:57,669 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 74 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:57,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1575 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:57,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-21 17:55:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 410. [2022-07-21 17:55:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 359 states have (on average 1.3008356545961002) internal successors, (467), 366 states have internal predecessors, (467), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-21 17:55:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 540 transitions. [2022-07-21 17:55:57,679 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 540 transitions. Word has length 41 [2022-07-21 17:55:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:57,680 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 540 transitions. [2022-07-21 17:55:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 540 transitions. [2022-07-21 17:55:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 17:55:57,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:57,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 17:55:57,681 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash 738484898, now seen corresponding path program 1 times [2022-07-21 17:55:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:57,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661935694] [2022-07-21 17:55:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:57,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:57,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661935694] [2022-07-21 17:55:57,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661935694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:57,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:57,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:55:57,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077720465] [2022-07-21 17:55:57,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:57,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:55:57,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:55:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:55:57,737 INFO L87 Difference]: Start difference. First operand 410 states and 540 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:58,024 INFO L93 Difference]: Finished difference Result 447 states and 582 transitions. [2022-07-21 17:55:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 17:55:58,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-21 17:55:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:58,026 INFO L225 Difference]: With dead ends: 447 [2022-07-21 17:55:58,026 INFO L226 Difference]: Without dead ends: 447 [2022-07-21 17:55:58,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-07-21 17:55:58,027 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 357 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:58,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1128 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-07-21 17:55:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 410. [2022-07-21 17:55:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 359 states have (on average 1.2952646239554317) internal successors, (465), 366 states have internal predecessors, (465), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-21 17:55:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 538 transitions. [2022-07-21 17:55:58,038 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 538 transitions. Word has length 40 [2022-07-21 17:55:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:58,039 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 538 transitions. [2022-07-21 17:55:58,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 538 transitions. [2022-07-21 17:55:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 17:55:58,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:58,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:58,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 17:55:58,040 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1982956471, now seen corresponding path program 1 times [2022-07-21 17:55:58,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:58,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140841223] [2022-07-21 17:55:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:58,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:55:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:58,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140841223] [2022-07-21 17:55:58,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140841223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:58,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:58,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:58,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001411896] [2022-07-21 17:55:58,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:58,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:58,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:58,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:58,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:58,093 INFO L87 Difference]: Start difference. First operand 410 states and 538 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:58,209 INFO L93 Difference]: Finished difference Result 436 states and 566 transitions. [2022-07-21 17:55:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:55:58,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-21 17:55:58,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:58,212 INFO L225 Difference]: With dead ends: 436 [2022-07-21 17:55:58,212 INFO L226 Difference]: Without dead ends: 404 [2022-07-21 17:55:58,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:58,213 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 74 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:58,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1314 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-21 17:55:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2022-07-21 17:55:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 351 states have internal predecessors, (446), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (37), 27 states have call predecessors, (37), 26 states have call successors, (37) [2022-07-21 17:55:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 515 transitions. [2022-07-21 17:55:58,222 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 515 transitions. Word has length 41 [2022-07-21 17:55:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:58,222 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 515 transitions. [2022-07-21 17:55:58,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 515 transitions. [2022-07-21 17:55:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 17:55:58,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:58,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:58,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 17:55:58,224 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:58,224 INFO L85 PathProgramCache]: Analyzing trace with hash -13657420, now seen corresponding path program 1 times [2022-07-21 17:55:58,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:58,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126769029] [2022-07-21 17:55:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:55:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:58,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:58,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126769029] [2022-07-21 17:55:58,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126769029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:58,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:58,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326920731] [2022-07-21 17:55:58,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:58,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:58,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:58,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:58,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:58,311 INFO L87 Difference]: Start difference. First operand 392 states and 515 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:58,558 INFO L93 Difference]: Finished difference Result 404 states and 528 transitions. [2022-07-21 17:55:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:55:58,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-07-21 17:55:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:58,561 INFO L225 Difference]: With dead ends: 404 [2022-07-21 17:55:58,561 INFO L226 Difference]: Without dead ends: 404 [2022-07-21 17:55:58,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:58,562 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 315 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:58,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 899 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-21 17:55:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2022-07-21 17:55:58,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 345 states have (on average 1.289855072463768) internal successors, (445), 351 states have internal predecessors, (445), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (37), 27 states have call predecessors, (37), 26 states have call successors, (37) [2022-07-21 17:55:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 514 transitions. [2022-07-21 17:55:58,574 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 514 transitions. Word has length 43 [2022-07-21 17:55:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:58,574 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 514 transitions. [2022-07-21 17:55:58,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 514 transitions. [2022-07-21 17:55:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 17:55:58,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:58,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:58,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 17:55:58,576 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1480101209, now seen corresponding path program 1 times [2022-07-21 17:55:58,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:58,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298362723] [2022-07-21 17:55:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:58,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:58,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298362723] [2022-07-21 17:55:58,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298362723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:58,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:58,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755161291] [2022-07-21 17:55:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:58,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:58,655 INFO L87 Difference]: Start difference. First operand 392 states and 514 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:58,915 INFO L93 Difference]: Finished difference Result 411 states and 538 transitions. [2022-07-21 17:55:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:55:58,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-21 17:55:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:58,918 INFO L225 Difference]: With dead ends: 411 [2022-07-21 17:55:58,918 INFO L226 Difference]: Without dead ends: 411 [2022-07-21 17:55:58,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:58,919 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 334 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:58,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 902 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-07-21 17:55:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 384. [2022-07-21 17:55:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 338 states have (on average 1.2810650887573964) internal successors, (433), 344 states have internal predecessors, (433), 32 states have call successors, (32), 14 states have call predecessors, (32), 13 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2022-07-21 17:55:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 501 transitions. [2022-07-21 17:55:58,931 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 501 transitions. Word has length 42 [2022-07-21 17:55:58,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:58,931 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 501 transitions. [2022-07-21 17:55:58,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 501 transitions. [2022-07-21 17:55:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 17:55:58,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:58,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:58,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 17:55:58,932 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:58,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:58,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2093894745, now seen corresponding path program 1 times [2022-07-21 17:55:58,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:58,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699704653] [2022-07-21 17:55:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:58,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:58,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:58,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699704653] [2022-07-21 17:55:58,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699704653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:58,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:58,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:55:58,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454497453] [2022-07-21 17:55:58,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:58,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:55:58,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:58,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:55:58,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:55:58,972 INFO L87 Difference]: Start difference. First operand 384 states and 501 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:59,107 INFO L93 Difference]: Finished difference Result 397 states and 512 transitions. [2022-07-21 17:55:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:55:59,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-21 17:55:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:59,109 INFO L225 Difference]: With dead ends: 397 [2022-07-21 17:55:59,110 INFO L226 Difference]: Without dead ends: 397 [2022-07-21 17:55:59,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:55:59,111 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 80 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:59,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 687 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:59,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-07-21 17:55:59,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 381. [2022-07-21 17:55:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 336 states have (on average 1.2738095238095237) internal successors, (428), 341 states have internal predecessors, (428), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2022-07-21 17:55:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 495 transitions. [2022-07-21 17:55:59,123 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 495 transitions. Word has length 42 [2022-07-21 17:55:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:59,123 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 495 transitions. [2022-07-21 17:55:59,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:59,124 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 495 transitions. [2022-07-21 17:55:59,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 17:55:59,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:59,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:59,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 17:55:59,126 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:59,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:59,126 INFO L85 PathProgramCache]: Analyzing trace with hash -34042315, now seen corresponding path program 1 times [2022-07-21 17:55:59,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:59,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887130341] [2022-07-21 17:55:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:59,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:59,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:59,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887130341] [2022-07-21 17:55:59,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887130341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:59,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:59,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221451649] [2022-07-21 17:55:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:59,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:59,203 INFO L87 Difference]: Start difference. First operand 381 states and 495 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:59,407 INFO L93 Difference]: Finished difference Result 423 states and 547 transitions. [2022-07-21 17:55:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:55:59,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-07-21 17:55:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:59,409 INFO L225 Difference]: With dead ends: 423 [2022-07-21 17:55:59,409 INFO L226 Difference]: Without dead ends: 422 [2022-07-21 17:55:59,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:55:59,410 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 227 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:59,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1530 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-21 17:55:59,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 396. [2022-07-21 17:55:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 350 states have (on average 1.262857142857143) internal successors, (442), 355 states have internal predecessors, (442), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (42), 27 states have call predecessors, (42), 26 states have call successors, (42) [2022-07-21 17:55:59,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 515 transitions. [2022-07-21 17:55:59,420 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 515 transitions. Word has length 43 [2022-07-21 17:55:59,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:59,420 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 515 transitions. [2022-07-21 17:55:59,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:59,420 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 515 transitions. [2022-07-21 17:55:59,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 17:55:59,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:59,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 17:55:59,422 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash -33765485, now seen corresponding path program 1 times [2022-07-21 17:55:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:59,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084679503] [2022-07-21 17:55:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:59,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084679503] [2022-07-21 17:55:59,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084679503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:59,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:59,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:55:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954770843] [2022-07-21 17:55:59,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:59,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:55:59,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:59,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:55:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:55:59,481 INFO L87 Difference]: Start difference. First operand 396 states and 515 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:59,734 INFO L93 Difference]: Finished difference Result 419 states and 540 transitions. [2022-07-21 17:55:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:55:59,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-07-21 17:55:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:59,737 INFO L225 Difference]: With dead ends: 419 [2022-07-21 17:55:59,737 INFO L226 Difference]: Without dead ends: 409 [2022-07-21 17:55:59,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:55:59,739 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 49 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:59,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1649 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:59,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-21 17:55:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 393. [2022-07-21 17:55:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 347 states have (on average 1.2651296829971181) internal successors, (439), 353 states have internal predecessors, (439), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (41), 26 states have call predecessors, (41), 26 states have call successors, (41) [2022-07-21 17:55:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 511 transitions. [2022-07-21 17:55:59,748 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 511 transitions. Word has length 43 [2022-07-21 17:55:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:59,748 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 511 transitions. [2022-07-21 17:55:59,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:55:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 511 transitions. [2022-07-21 17:55:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 17:55:59,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:59,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:59,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 17:55:59,751 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:55:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1181888463, now seen corresponding path program 1 times [2022-07-21 17:55:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:59,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743016831] [2022-07-21 17:55:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:55:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:59,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:59,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743016831] [2022-07-21 17:55:59,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743016831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:55:59,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:55:59,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:55:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195899843] [2022-07-21 17:55:59,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:55:59,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:55:59,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:59,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:55:59,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:55:59,812 INFO L87 Difference]: Start difference. First operand 393 states and 511 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:00,047 INFO L93 Difference]: Finished difference Result 409 states and 526 transitions. [2022-07-21 17:56:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-21 17:56:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:00,049 INFO L225 Difference]: With dead ends: 409 [2022-07-21 17:56:00,050 INFO L226 Difference]: Without dead ends: 397 [2022-07-21 17:56:00,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:00,050 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 384 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:00,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 837 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-07-21 17:56:00,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 377. [2022-07-21 17:56:00,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 333 states have (on average 1.2702702702702702) internal successors, (423), 338 states have internal predecessors, (423), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2022-07-21 17:56:00,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 488 transitions. [2022-07-21 17:56:00,058 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 488 transitions. Word has length 44 [2022-07-21 17:56:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:00,059 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 488 transitions. [2022-07-21 17:56:00,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 488 transitions. [2022-07-21 17:56:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 17:56:00,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:00,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:00,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 17:56:00,060 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:00,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1424622961, now seen corresponding path program 1 times [2022-07-21 17:56:00,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:00,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390857014] [2022-07-21 17:56:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:00,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390857014] [2022-07-21 17:56:00,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390857014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:00,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:00,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:56:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285543654] [2022-07-21 17:56:00,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:00,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:56:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:56:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:56:00,115 INFO L87 Difference]: Start difference. First operand 377 states and 488 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:00,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:00,255 INFO L93 Difference]: Finished difference Result 468 states and 599 transitions. [2022-07-21 17:56:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:56:00,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-07-21 17:56:00,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:00,258 INFO L225 Difference]: With dead ends: 468 [2022-07-21 17:56:00,258 INFO L226 Difference]: Without dead ends: 468 [2022-07-21 17:56:00,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:56:00,259 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 160 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:00,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 747 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-07-21 17:56:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 430. [2022-07-21 17:56:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 381 states have (on average 1.2703412073490814) internal successors, (484), 385 states have internal predecessors, (484), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2022-07-21 17:56:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 557 transitions. [2022-07-21 17:56:00,269 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 557 transitions. Word has length 46 [2022-07-21 17:56:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:00,269 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 557 transitions. [2022-07-21 17:56:00,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 557 transitions. [2022-07-21 17:56:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 17:56:00,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:00,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:00,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 17:56:00,271 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1973534822, now seen corresponding path program 1 times [2022-07-21 17:56:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:00,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694748376] [2022-07-21 17:56:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:00,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:00,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694748376] [2022-07-21 17:56:00,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694748376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:00,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:00,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:00,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927523701] [2022-07-21 17:56:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:00,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:00,344 INFO L87 Difference]: Start difference. First operand 430 states and 557 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:00,543 INFO L93 Difference]: Finished difference Result 471 states and 604 transitions. [2022-07-21 17:56:00,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-07-21 17:56:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:00,547 INFO L225 Difference]: With dead ends: 471 [2022-07-21 17:56:00,547 INFO L226 Difference]: Without dead ends: 471 [2022-07-21 17:56:00,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:00,548 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 52 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:00,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1610 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-07-21 17:56:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 430. [2022-07-21 17:56:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 381 states have (on average 1.2650918635170603) internal successors, (482), 385 states have internal predecessors, (482), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2022-07-21 17:56:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 555 transitions. [2022-07-21 17:56:00,566 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 555 transitions. Word has length 48 [2022-07-21 17:56:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:00,566 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 555 transitions. [2022-07-21 17:56:00,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 555 transitions. [2022-07-21 17:56:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 17:56:00,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:00,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:00,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 17:56:00,569 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:00,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1518352747, now seen corresponding path program 1 times [2022-07-21 17:56:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:00,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611896014] [2022-07-21 17:56:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:00,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:00,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611896014] [2022-07-21 17:56:00,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611896014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:00,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:00,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714397188] [2022-07-21 17:56:00,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:00,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:00,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:00,633 INFO L87 Difference]: Start difference. First operand 430 states and 555 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:00,901 INFO L93 Difference]: Finished difference Result 454 states and 581 transitions. [2022-07-21 17:56:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:00,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-07-21 17:56:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:00,904 INFO L225 Difference]: With dead ends: 454 [2022-07-21 17:56:00,904 INFO L226 Difference]: Without dead ends: 438 [2022-07-21 17:56:00,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:56:00,905 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 53 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:00,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1844 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-21 17:56:00,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 426. [2022-07-21 17:56:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 378 states have (on average 1.2645502645502646) internal successors, (478), 382 states have internal predecessors, (478), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (40), 28 states have call predecessors, (40), 27 states have call successors, (40) [2022-07-21 17:56:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 549 transitions. [2022-07-21 17:56:00,914 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 549 transitions. Word has length 48 [2022-07-21 17:56:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:00,914 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 549 transitions. [2022-07-21 17:56:00,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 549 transitions. [2022-07-21 17:56:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-21 17:56:00,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:00,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 17:56:00,916 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:00,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:00,917 INFO L85 PathProgramCache]: Analyzing trace with hash 882823039, now seen corresponding path program 1 times [2022-07-21 17:56:00,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:00,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973257550] [2022-07-21 17:56:00,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:00,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:00,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:00,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973257550] [2022-07-21 17:56:00,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973257550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:00,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:00,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:00,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478420841] [2022-07-21 17:56:00,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:00,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:00,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:00,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:00,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:00,979 INFO L87 Difference]: Start difference. First operand 426 states and 549 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:01,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:01,203 INFO L93 Difference]: Finished difference Result 450 states and 575 transitions. [2022-07-21 17:56:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:01,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-21 17:56:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:01,205 INFO L225 Difference]: With dead ends: 450 [2022-07-21 17:56:01,205 INFO L226 Difference]: Without dead ends: 433 [2022-07-21 17:56:01,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:56:01,206 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 53 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:01,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1806 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:01,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-21 17:56:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 421. [2022-07-21 17:56:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 374 states have (on average 1.2647058823529411) internal successors, (473), 378 states have internal predecessors, (473), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (39), 27 states have call predecessors, (39), 26 states have call successors, (39) [2022-07-21 17:56:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 542 transitions. [2022-07-21 17:56:01,214 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 542 transitions. Word has length 49 [2022-07-21 17:56:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:01,215 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 542 transitions. [2022-07-21 17:56:01,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:01,215 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 542 transitions. [2022-07-21 17:56:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-21 17:56:01,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:01,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:01,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 17:56:01,216 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:01,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:01,217 INFO L85 PathProgramCache]: Analyzing trace with hash 163830842, now seen corresponding path program 1 times [2022-07-21 17:56:01,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:01,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399291065] [2022-07-21 17:56:01,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:01,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:01,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:01,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399291065] [2022-07-21 17:56:01,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399291065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:01,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:01,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:01,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800502298] [2022-07-21 17:56:01,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:01,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:01,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:01,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:01,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:01,273 INFO L87 Difference]: Start difference. First operand 421 states and 542 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:01,492 INFO L93 Difference]: Finished difference Result 445 states and 568 transitions. [2022-07-21 17:56:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:01,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-21 17:56:01,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:01,494 INFO L225 Difference]: With dead ends: 445 [2022-07-21 17:56:01,495 INFO L226 Difference]: Without dead ends: 429 [2022-07-21 17:56:01,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:56:01,495 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 53 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:01,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1760 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-21 17:56:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2022-07-21 17:56:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 371 states have (on average 1.2641509433962264) internal successors, (469), 375 states have internal predecessors, (469), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2022-07-21 17:56:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 536 transitions. [2022-07-21 17:56:01,504 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 536 transitions. Word has length 49 [2022-07-21 17:56:01,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:01,505 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 536 transitions. [2022-07-21 17:56:01,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:01,505 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 536 transitions. [2022-07-21 17:56:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 17:56:01,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:01,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:01,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 17:56:01,507 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:01,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:01,508 INFO L85 PathProgramCache]: Analyzing trace with hash -48892372, now seen corresponding path program 1 times [2022-07-21 17:56:01,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:01,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768519259] [2022-07-21 17:56:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:01,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:01,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:01,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768519259] [2022-07-21 17:56:01,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768519259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:01,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:01,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57489799] [2022-07-21 17:56:01,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:01,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:01,594 INFO L87 Difference]: Start difference. First operand 417 states and 536 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:01,778 INFO L93 Difference]: Finished difference Result 561 states and 736 transitions. [2022-07-21 17:56:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:01,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-07-21 17:56:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:01,781 INFO L225 Difference]: With dead ends: 561 [2022-07-21 17:56:01,781 INFO L226 Difference]: Without dead ends: 561 [2022-07-21 17:56:01,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:01,782 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 104 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:01,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1794 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-21 17:56:01,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 417. [2022-07-21 17:56:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 371 states have (on average 1.261455525606469) internal successors, (468), 375 states have internal predecessors, (468), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2022-07-21 17:56:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 535 transitions. [2022-07-21 17:56:01,793 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 535 transitions. Word has length 51 [2022-07-21 17:56:01,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:01,793 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 535 transitions. [2022-07-21 17:56:01,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 535 transitions. [2022-07-21 17:56:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 17:56:01,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:01,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:01,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 17:56:01,795 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:01,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1190154103, now seen corresponding path program 1 times [2022-07-21 17:56:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:01,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804566648] [2022-07-21 17:56:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:01,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 17:56:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:01,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804566648] [2022-07-21 17:56:01,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804566648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:01,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:01,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:01,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469290946] [2022-07-21 17:56:01,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:01,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:01,878 INFO L87 Difference]: Start difference. First operand 417 states and 535 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,092 INFO L93 Difference]: Finished difference Result 441 states and 561 transitions. [2022-07-21 17:56:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:02,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-07-21 17:56:02,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,095 INFO L225 Difference]: With dead ends: 441 [2022-07-21 17:56:02,095 INFO L226 Difference]: Without dead ends: 407 [2022-07-21 17:56:02,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:56:02,095 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 61 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:02,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1764 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-21 17:56:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 395. [2022-07-21 17:56:02,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 352 states have (on average 1.2613636363636365) internal successors, (444), 356 states have internal predecessors, (444), 27 states have call successors, (27), 15 states have call predecessors, (27), 15 states have return successors, (36), 24 states have call predecessors, (36), 23 states have call successors, (36) [2022-07-21 17:56:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 507 transitions. [2022-07-21 17:56:02,103 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 507 transitions. Word has length 53 [2022-07-21 17:56:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,104 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 507 transitions. [2022-07-21 17:56:02,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:56:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 507 transitions. [2022-07-21 17:56:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-21 17:56:02,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:02,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 17:56:02,106 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1140585270, now seen corresponding path program 1 times [2022-07-21 17:56:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533836237] [2022-07-21 17:56:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:02,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533836237] [2022-07-21 17:56:02,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533836237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:02,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:02,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:02,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281875329] [2022-07-21 17:56:02,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:02,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:02,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:02,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:02,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:02,178 INFO L87 Difference]: Start difference. First operand 395 states and 507 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,371 INFO L93 Difference]: Finished difference Result 382 states and 481 transitions. [2022-07-21 17:56:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:02,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2022-07-21 17:56:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,373 INFO L225 Difference]: With dead ends: 382 [2022-07-21 17:56:02,373 INFO L226 Difference]: Without dead ends: 382 [2022-07-21 17:56:02,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:02,374 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 132 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:02,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1169 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-21 17:56:02,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 362. [2022-07-21 17:56:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 324 states have (on average 1.2623456790123457) internal successors, (409), 327 states have internal predecessors, (409), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2022-07-21 17:56:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 457 transitions. [2022-07-21 17:56:02,390 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 457 transitions. Word has length 59 [2022-07-21 17:56:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,390 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 457 transitions. [2022-07-21 17:56:02,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 457 transitions. [2022-07-21 17:56:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-21 17:56:02,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:02,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 17:56:02,392 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash 731705651, now seen corresponding path program 1 times [2022-07-21 17:56:02,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092720873] [2022-07-21 17:56:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 17:56:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092720873] [2022-07-21 17:56:02,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092720873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:02,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:02,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374858715] [2022-07-21 17:56:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:02,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:02,477 INFO L87 Difference]: Start difference. First operand 362 states and 457 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,840 INFO L93 Difference]: Finished difference Result 487 states and 595 transitions. [2022-07-21 17:56:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:56:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-07-21 17:56:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,843 INFO L225 Difference]: With dead ends: 487 [2022-07-21 17:56:02,843 INFO L226 Difference]: Without dead ends: 487 [2022-07-21 17:56:02,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-07-21 17:56:02,843 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 355 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:02,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1373 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:56:02,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-07-21 17:56:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 456. [2022-07-21 17:56:02,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 408 states have (on average 1.2475490196078431) internal successors, (509), 413 states have internal predecessors, (509), 26 states have call successors, (26), 20 states have call predecessors, (26), 21 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2022-07-21 17:56:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 562 transitions. [2022-07-21 17:56:02,853 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 562 transitions. Word has length 61 [2022-07-21 17:56:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,853 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 562 transitions. [2022-07-21 17:56:02,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 562 transitions. [2022-07-21 17:56:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 17:56:02,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:02,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 17:56:02,855 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1386771644, now seen corresponding path program 1 times [2022-07-21 17:56:02,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676283422] [2022-07-21 17:56:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 17:56:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:02,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:02,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676283422] [2022-07-21 17:56:02,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676283422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:02,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:02,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:56:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246902906] [2022-07-21 17:56:02,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:02,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:56:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:56:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:02,929 INFO L87 Difference]: Start difference. First operand 456 states and 562 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:56:03,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:03,203 INFO L93 Difference]: Finished difference Result 455 states and 560 transitions. [2022-07-21 17:56:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:03,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2022-07-21 17:56:03,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:03,205 INFO L225 Difference]: With dead ends: 455 [2022-07-21 17:56:03,205 INFO L226 Difference]: Without dead ends: 343 [2022-07-21 17:56:03,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:56:03,206 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 97 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:03,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1606 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-21 17:56:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-07-21 17:56:03,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 304 states have (on average 1.2532894736842106) internal successors, (381), 308 states have internal predecessors, (381), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2022-07-21 17:56:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 425 transitions. [2022-07-21 17:56:03,223 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 425 transitions. Word has length 62 [2022-07-21 17:56:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:03,223 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 425 transitions. [2022-07-21 17:56:03,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:56:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 425 transitions. [2022-07-21 17:56:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 17:56:03,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:03,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 17:56:03,224 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash -643436666, now seen corresponding path program 1 times [2022-07-21 17:56:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:03,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223485991] [2022-07-21 17:56:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:03,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:03,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:03,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223485991] [2022-07-21 17:56:03,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223485991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:03,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:03,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:56:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889538797] [2022-07-21 17:56:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:03,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:56:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:56:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:03,311 INFO L87 Difference]: Start difference. First operand 343 states and 425 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:03,518 INFO L93 Difference]: Finished difference Result 375 states and 461 transitions. [2022-07-21 17:56:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:03,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2022-07-21 17:56:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:03,520 INFO L225 Difference]: With dead ends: 375 [2022-07-21 17:56:03,520 INFO L226 Difference]: Without dead ends: 359 [2022-07-21 17:56:03,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:56:03,521 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 246 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:03,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 990 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:03,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-21 17:56:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 351. [2022-07-21 17:56:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 311 states have (on average 1.247588424437299) internal successors, (388), 315 states have internal predecessors, (388), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 19 states have call successors, (25) [2022-07-21 17:56:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 434 transitions. [2022-07-21 17:56:03,528 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 434 transitions. Word has length 63 [2022-07-21 17:56:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:03,528 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 434 transitions. [2022-07-21 17:56:03,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 434 transitions. [2022-07-21 17:56:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 17:56:03,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:03,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:03,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 17:56:03,529 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:03,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:03,530 INFO L85 PathProgramCache]: Analyzing trace with hash -164766848, now seen corresponding path program 1 times [2022-07-21 17:56:03,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:03,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491246548] [2022-07-21 17:56:03,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:03,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 17:56:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:03,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491246548] [2022-07-21 17:56:03,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491246548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:03,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:03,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:56:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050051128] [2022-07-21 17:56:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:03,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:56:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:03,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:56:03,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:03,610 INFO L87 Difference]: Start difference. First operand 351 states and 434 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:03,803 INFO L93 Difference]: Finished difference Result 375 states and 460 transitions. [2022-07-21 17:56:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:03,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2022-07-21 17:56:03,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:03,805 INFO L225 Difference]: With dead ends: 375 [2022-07-21 17:56:03,805 INFO L226 Difference]: Without dead ends: 359 [2022-07-21 17:56:03,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:56:03,805 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 71 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:03,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1259 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-21 17:56:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 343. [2022-07-21 17:56:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 304 states have (on average 1.25) internal successors, (380), 308 states have internal predecessors, (380), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2022-07-21 17:56:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 424 transitions. [2022-07-21 17:56:03,811 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 424 transitions. Word has length 64 [2022-07-21 17:56:03,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:03,812 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 424 transitions. [2022-07-21 17:56:03,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:03,812 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 424 transitions. [2022-07-21 17:56:03,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 17:56:03,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:03,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:03,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 17:56:03,813 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:03,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:03,813 INFO L85 PathProgramCache]: Analyzing trace with hash 955115294, now seen corresponding path program 1 times [2022-07-21 17:56:03,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:03,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170661187] [2022-07-21 17:56:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:03,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:03,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:03,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170661187] [2022-07-21 17:56:03,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170661187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:03,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:03,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:03,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119420878] [2022-07-21 17:56:03,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:03,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:03,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:03,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:03,892 INFO L87 Difference]: Start difference. First operand 343 states and 424 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,052 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2022-07-21 17:56:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:04,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2022-07-21 17:56:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,054 INFO L225 Difference]: With dead ends: 395 [2022-07-21 17:56:04,054 INFO L226 Difference]: Without dead ends: 370 [2022-07-21 17:56:04,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:56:04,055 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 85 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1133 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-07-21 17:56:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 354. [2022-07-21 17:56:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 314 states have (on average 1.2261146496815287) internal successors, (385), 319 states have internal predecessors, (385), 22 states have call successors, (22), 16 states have call predecessors, (22), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2022-07-21 17:56:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 430 transitions. [2022-07-21 17:56:04,064 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 430 transitions. Word has length 68 [2022-07-21 17:56:04,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,064 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 430 transitions. [2022-07-21 17:56:04,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 430 transitions. [2022-07-21 17:56:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 17:56:04,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:04,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 17:56:04,067 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,068 INFO L85 PathProgramCache]: Analyzing trace with hash 162641819, now seen corresponding path program 1 times [2022-07-21 17:56:04,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579761106] [2022-07-21 17:56:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 17:56:04,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579761106] [2022-07-21 17:56:04,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579761106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:04,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769029665] [2022-07-21 17:56:04,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:04,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:04,162 INFO L87 Difference]: Start difference. First operand 354 states and 430 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:56:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,285 INFO L93 Difference]: Finished difference Result 389 states and 473 transitions. [2022-07-21 17:56:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:56:04,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2022-07-21 17:56:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,287 INFO L225 Difference]: With dead ends: 389 [2022-07-21 17:56:04,287 INFO L226 Difference]: Without dead ends: 389 [2022-07-21 17:56:04,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:04,288 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 77 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1148 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-07-21 17:56:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 262. [2022-07-21 17:56:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 231 states have (on average 1.1818181818181819) internal successors, (273), 235 states have internal predecessors, (273), 16 states have call successors, (16), 12 states have call predecessors, (16), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-07-21 17:56:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 308 transitions. [2022-07-21 17:56:04,293 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 308 transitions. Word has length 71 [2022-07-21 17:56:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,293 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 308 transitions. [2022-07-21 17:56:04,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:56:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 308 transitions. [2022-07-21 17:56:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 17:56:04,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:04,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 17:56:04,295 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1179991342, now seen corresponding path program 1 times [2022-07-21 17:56:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723348469] [2022-07-21 17:56:04,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 17:56:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 17:56:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:04,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723348469] [2022-07-21 17:56:04,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723348469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:04,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447862172] [2022-07-21 17:56:04,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:04,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:04,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:04,362 INFO L87 Difference]: Start difference. First operand 262 states and 308 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,517 INFO L93 Difference]: Finished difference Result 258 states and 301 transitions. [2022-07-21 17:56:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:04,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2022-07-21 17:56:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,519 INFO L225 Difference]: With dead ends: 258 [2022-07-21 17:56:04,519 INFO L226 Difference]: Without dead ends: 256 [2022-07-21 17:56:04,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:56:04,520 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 46 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1043 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-21 17:56:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2022-07-21 17:56:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 187 states have internal predecessors, (214), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-21 17:56:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 239 transitions. [2022-07-21 17:56:04,536 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 239 transitions. Word has length 74 [2022-07-21 17:56:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,536 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 239 transitions. [2022-07-21 17:56:04,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 239 transitions. [2022-07-21 17:56:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 17:56:04,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:04,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 17:56:04,539 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash 928752582, now seen corresponding path program 1 times [2022-07-21 17:56:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263119880] [2022-07-21 17:56:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 17:56:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:04,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263119880] [2022-07-21 17:56:04,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263119880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:04,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930404244] [2022-07-21 17:56:04,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:04,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:04,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:04,623 INFO L87 Difference]: Start difference. First operand 208 states and 239 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:04,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,941 INFO L93 Difference]: Finished difference Result 399 states and 460 transitions. [2022-07-21 17:56:04,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:56:04,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2022-07-21 17:56:04,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,943 INFO L225 Difference]: With dead ends: 399 [2022-07-21 17:56:04,943 INFO L226 Difference]: Without dead ends: 359 [2022-07-21 17:56:04,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:56:04,944 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 370 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1362 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:56:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-21 17:56:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 188. [2022-07-21 17:56:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1607142857142858) internal successors, (195), 170 states have internal predecessors, (195), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-21 17:56:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2022-07-21 17:56:04,948 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 74 [2022-07-21 17:56:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,948 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2022-07-21 17:56:04,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2022-07-21 17:56:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-21 17:56:04,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:04,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 17:56:04,950 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1434511596, now seen corresponding path program 1 times [2022-07-21 17:56:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448437933] [2022-07-21 17:56:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 17:56:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:56:05,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:05,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448437933] [2022-07-21 17:56:05,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448437933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:05,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:05,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:05,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324437718] [2022-07-21 17:56:05,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:05,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:05,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:05,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:05,004 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:05,089 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2022-07-21 17:56:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:05,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2022-07-21 17:56:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:05,090 INFO L225 Difference]: With dead ends: 196 [2022-07-21 17:56:05,090 INFO L226 Difference]: Without dead ends: 194 [2022-07-21 17:56:05,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:05,091 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 45 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:05,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 473 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-21 17:56:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2022-07-21 17:56:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1547619047619047) internal successors, (194), 170 states have internal predecessors, (194), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-21 17:56:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 213 transitions. [2022-07-21 17:56:05,095 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 213 transitions. Word has length 80 [2022-07-21 17:56:05,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:05,095 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 213 transitions. [2022-07-21 17:56:05,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 17:56:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 213 transitions. [2022-07-21 17:56:05,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 17:56:05,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:05,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:05,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 17:56:05,097 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:05,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:05,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1155457, now seen corresponding path program 1 times [2022-07-21 17:56:05,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:05,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992062704] [2022-07-21 17:56:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:05,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 17:56:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 17:56:05,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:05,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992062704] [2022-07-21 17:56:05,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992062704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:05,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:05,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:05,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855192535] [2022-07-21 17:56:05,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:05,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:05,160 INFO L87 Difference]: Start difference. First operand 188 states and 213 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:05,255 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2022-07-21 17:56:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:05,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 100 [2022-07-21 17:56:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:05,257 INFO L225 Difference]: With dead ends: 218 [2022-07-21 17:56:05,257 INFO L226 Difference]: Without dead ends: 218 [2022-07-21 17:56:05,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:05,258 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:05,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 643 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-21 17:56:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 190. [2022-07-21 17:56:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 170 states have (on average 1.1529411764705881) internal successors, (196), 172 states have internal predecessors, (196), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-21 17:56:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 215 transitions. [2022-07-21 17:56:05,261 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 215 transitions. Word has length 100 [2022-07-21 17:56:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:05,262 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 215 transitions. [2022-07-21 17:56:05,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 215 transitions. [2022-07-21 17:56:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 17:56:05,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:05,263 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:05,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 17:56:05,264 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash 877885761, now seen corresponding path program 1 times [2022-07-21 17:56:05,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:05,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860959928] [2022-07-21 17:56:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 17:56:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 17:56:05,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:05,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860959928] [2022-07-21 17:56:05,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860959928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:05,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:05,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:56:05,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697820728] [2022-07-21 17:56:05,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:05,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:56:05,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:05,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:56:05,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:05,359 INFO L87 Difference]: Start difference. First operand 190 states and 215 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:05,562 INFO L93 Difference]: Finished difference Result 227 states and 258 transitions. [2022-07-21 17:56:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:05,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 100 [2022-07-21 17:56:05,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:05,563 INFO L225 Difference]: With dead ends: 227 [2022-07-21 17:56:05,563 INFO L226 Difference]: Without dead ends: 194 [2022-07-21 17:56:05,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-07-21 17:56:05,564 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 280 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:05,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 848 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-21 17:56:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2022-07-21 17:56:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1428571428571428) internal successors, (192), 170 states have internal predecessors, (192), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-21 17:56:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 211 transitions. [2022-07-21 17:56:05,568 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 211 transitions. Word has length 100 [2022-07-21 17:56:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:05,569 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 211 transitions. [2022-07-21 17:56:05,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 211 transitions. [2022-07-21 17:56:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 17:56:05,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:05,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:05,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-21 17:56:05,571 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:05,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1148812128, now seen corresponding path program 1 times [2022-07-21 17:56:05,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:05,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858947138] [2022-07-21 17:56:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 17:56:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 17:56:05,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:05,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858947138] [2022-07-21 17:56:05,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858947138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:05,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:05,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:56:05,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869554348] [2022-07-21 17:56:05,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:05,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:56:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:56:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:56:05,715 INFO L87 Difference]: Start difference. First operand 188 states and 211 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:06,086 INFO L93 Difference]: Finished difference Result 293 states and 337 transitions. [2022-07-21 17:56:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 17:56:06,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 101 [2022-07-21 17:56:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:06,088 INFO L225 Difference]: With dead ends: 293 [2022-07-21 17:56:06,088 INFO L226 Difference]: Without dead ends: 262 [2022-07-21 17:56:06,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-07-21 17:56:06,089 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 473 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:06,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1238 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:56:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-21 17:56:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 203. [2022-07-21 17:56:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 182 states have (on average 1.1483516483516483) internal successors, (209), 184 states have internal predecessors, (209), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-21 17:56:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2022-07-21 17:56:06,092 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 101 [2022-07-21 17:56:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:06,093 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2022-07-21 17:56:06,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2022-07-21 17:56:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 17:56:06,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:06,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:06,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 17:56:06,094 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:06,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash 312231464, now seen corresponding path program 1 times [2022-07-21 17:56:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:06,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048466002] [2022-07-21 17:56:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:06,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 17:56:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 17:56:06,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:06,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048466002] [2022-07-21 17:56:06,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048466002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:06,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:06,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:56:06,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083524083] [2022-07-21 17:56:06,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:06,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:56:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:56:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:56:06,252 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:06,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:06,495 INFO L93 Difference]: Finished difference Result 220 states and 248 transitions. [2022-07-21 17:56:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:06,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 102 [2022-07-21 17:56:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:06,496 INFO L225 Difference]: With dead ends: 220 [2022-07-21 17:56:06,496 INFO L226 Difference]: Without dead ends: 217 [2022-07-21 17:56:06,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 17:56:06,497 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 30 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:06,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1568 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-21 17:56:06,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 203. [2022-07-21 17:56:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 182 states have (on average 1.1428571428571428) internal successors, (208), 184 states have internal predecessors, (208), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-21 17:56:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2022-07-21 17:56:06,501 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 102 [2022-07-21 17:56:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:06,501 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2022-07-21 17:56:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2022-07-21 17:56:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 17:56:06,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:06,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:06,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 17:56:06,503 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash -231607862, now seen corresponding path program 1 times [2022-07-21 17:56:06,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:06,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801176691] [2022-07-21 17:56:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:06,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 17:56:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 17:56:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:06,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801176691] [2022-07-21 17:56:06,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801176691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:06,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:06,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:06,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844507504] [2022-07-21 17:56:06,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:06,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:06,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:06,578 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:06,659 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2022-07-21 17:56:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 105 [2022-07-21 17:56:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:06,661 INFO L225 Difference]: With dead ends: 204 [2022-07-21 17:56:06,661 INFO L226 Difference]: Without dead ends: 195 [2022-07-21 17:56:06,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:06,662 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 175 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:06,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 277 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-21 17:56:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2022-07-21 17:56:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 161 states have (on average 1.124223602484472) internal successors, (181), 163 states have internal predecessors, (181), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-21 17:56:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 200 transitions. [2022-07-21 17:56:06,666 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 200 transitions. Word has length 105 [2022-07-21 17:56:06,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:06,667 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 200 transitions. [2022-07-21 17:56:06,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:56:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 200 transitions. [2022-07-21 17:56:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 17:56:06,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:06,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:06,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-21 17:56:06,669 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:06,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1876893126, now seen corresponding path program 1 times [2022-07-21 17:56:06,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:06,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198980424] [2022-07-21 17:56:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 17:56:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 17:56:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 17:56:06,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:06,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198980424] [2022-07-21 17:56:06,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198980424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:06,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:06,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:06,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878857290] [2022-07-21 17:56:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:06,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:06,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:06,762 INFO L87 Difference]: Start difference. First operand 181 states and 200 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 17:56:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:06,879 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2022-07-21 17:56:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:06,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 111 [2022-07-21 17:56:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:06,881 INFO L225 Difference]: With dead ends: 170 [2022-07-21 17:56:06,881 INFO L226 Difference]: Without dead ends: 160 [2022-07-21 17:56:06,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:56:06,882 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 66 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:06,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 614 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-21 17:56:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-21 17:56:06,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 144 states have internal predecessors, (159), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 17:56:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2022-07-21 17:56:06,885 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 111 [2022-07-21 17:56:06,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:06,885 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2022-07-21 17:56:06,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 17:56:06,886 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2022-07-21 17:56:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 17:56:06,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:06,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:06,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-21 17:56:06,887 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:06,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1629424061, now seen corresponding path program 1 times [2022-07-21 17:56:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:06,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063121799] [2022-07-21 17:56:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:06,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 17:56:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 17:56:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 17:56:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:06,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063121799] [2022-07-21 17:56:06,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063121799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:06,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:06,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607010901] [2022-07-21 17:56:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:06,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:06,979 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 17:56:07,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:07,210 INFO L93 Difference]: Finished difference Result 278 states and 303 transitions. [2022-07-21 17:56:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:56:07,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-07-21 17:56:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:07,212 INFO L225 Difference]: With dead ends: 278 [2022-07-21 17:56:07,212 INFO L226 Difference]: Without dead ends: 160 [2022-07-21 17:56:07,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-07-21 17:56:07,215 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 136 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:07,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 744 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:07,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-21 17:56:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-21 17:56:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.1048951048951048) internal successors, (158), 144 states have internal predecessors, (158), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 17:56:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2022-07-21 17:56:07,219 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 112 [2022-07-21 17:56:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:07,219 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2022-07-21 17:56:07,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 17:56:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2022-07-21 17:56:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 17:56:07,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:07,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:07,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 17:56:07,221 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:07,222 INFO L85 PathProgramCache]: Analyzing trace with hash 692377857, now seen corresponding path program 1 times [2022-07-21 17:56:07,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:07,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928150471] [2022-07-21 17:56:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:07,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 17:56:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 17:56:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 17:56:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 17:56:07,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:07,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928150471] [2022-07-21 17:56:07,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928150471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:07,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:07,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 17:56:07,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606521412] [2022-07-21 17:56:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:07,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 17:56:07,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 17:56:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:56:07,361 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 17:56:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:07,660 INFO L93 Difference]: Finished difference Result 170 states and 187 transitions. [2022-07-21 17:56:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:56:07,660 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-07-21 17:56:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:07,661 INFO L225 Difference]: With dead ends: 170 [2022-07-21 17:56:07,661 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 17:56:07,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2022-07-21 17:56:07,662 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 401 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:07,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 604 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 17:56:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 17:56:07,662 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) [2022-07-21 17:56:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 17:56:07,662 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2022-07-21 17:56:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:07,663 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 17:56:07,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 17:56:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 17:56:07,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 17:56:07,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-07-21 17:56:07,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-07-21 17:56:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-21 17:56:07,670 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:07,671 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 17:56:07,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:56:07 BoogieIcfgContainer [2022-07-21 17:56:07,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 17:56:07,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 17:56:07,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 17:56:07,675 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 17:56:07,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:55:54" (3/4) ... [2022-07-21 17:56:07,677 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 17:56:07,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2022-07-21 17:56:07,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2022-07-21 17:56:07,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2022-07-21 17:56:07,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2022-07-21 17:56:07,684 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2022-07-21 17:56:07,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2022-07-21 17:56:07,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-07-21 17:56:07,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-21 17:56:07,700 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-07-21 17:56:07,793 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 17:56:07,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 17:56:07,794 INFO L158 Benchmark]: Toolchain (without parser) took 14943.91ms. Allocated memory was 52.4MB in the beginning and 176.2MB in the end (delta: 123.7MB). Free memory was 27.8MB in the beginning and 106.9MB in the end (delta: -79.0MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2022-07-21 17:56:07,794 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.8MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:56:07,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.56ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 27.6MB in the beginning and 42.1MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 17:56:07,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.32ms. Allocated memory is still 67.1MB. Free memory was 42.1MB in the beginning and 37.3MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 17:56:07,795 INFO L158 Benchmark]: Boogie Preprocessor took 43.90ms. Allocated memory is still 67.1MB. Free memory was 37.3MB in the beginning and 34.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 17:56:07,795 INFO L158 Benchmark]: RCFGBuilder took 950.19ms. Allocated memory is still 67.1MB. Free memory was 34.3MB in the beginning and 37.8MB in the end (delta: -3.5MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-07-21 17:56:07,795 INFO L158 Benchmark]: TraceAbstraction took 13343.59ms. Allocated memory was 67.1MB in the beginning and 176.2MB in the end (delta: 109.1MB). Free memory was 37.2MB in the beginning and 120.5MB in the end (delta: -83.3MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2022-07-21 17:56:07,795 INFO L158 Benchmark]: Witness Printer took 119.28ms. Allocated memory is still 176.2MB. Free memory was 120.5MB in the beginning and 106.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 17:56:07,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.8MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.56ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 27.6MB in the beginning and 42.1MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.32ms. Allocated memory is still 67.1MB. Free memory was 42.1MB in the beginning and 37.3MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.90ms. Allocated memory is still 67.1MB. Free memory was 37.3MB in the beginning and 34.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 950.19ms. Allocated memory is still 67.1MB. Free memory was 34.3MB in the beginning and 37.8MB in the end (delta: -3.5MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13343.59ms. Allocated memory was 67.1MB in the beginning and 176.2MB in the end (delta: 109.1MB). Free memory was 37.2MB in the beginning and 120.5MB in the end (delta: -83.3MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * Witness Printer took 119.28ms. Allocated memory is still 176.2MB. Free memory was 120.5MB in the beginning and 106.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. 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: 65]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 670]: 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 6 procedures, 238 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 48, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8824 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8690 mSDsluCounter, 48758 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36323 mSDsCounter, 1342 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10770 IncrementalHoareTripleChecker+Invalid, 12112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1342 mSolverCounterUnsat, 12435 mSDtfsCounter, 10770 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 587 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=13, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 48 MinimizatonAttempts, 1430 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 2599 NumberOfCodeBlocks, 2599 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 2551 ConstructedInterpolants, 0 QuantifiedInterpolants, 5949 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 140/140 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! [2022-07-21 17:56:07,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE