./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.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_simpl4.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 b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:55:58,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:55:58,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:55:58,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:55:58,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:55:58,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:55:58,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:55:58,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:55:58,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:55:58,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:55:58,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:55:58,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:55:58,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:55:58,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:55:58,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:55:58,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:55:58,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:55:58,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:55:58,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:55:58,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:55:58,819 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:55:58,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:55:58,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:55:58,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:55:58,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:55:58,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:55:58,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:55:58,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:55:58,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:55:58,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:55:58,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:55:58,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:55:58,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:55:58,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:55:58,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:55:58,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:55:58,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:55:58,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:55:58,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:55:58,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:55:58,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:55:58,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:55:58,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 17:55:58,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:55:58,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:55:58,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:55:58,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:55:58,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:55:58,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:55:58,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:55:58,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:55:58,864 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:55:58,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:55:58,865 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:55:58,865 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:55:58,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:55:58,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:55:58,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:55:58,865 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:55:58,866 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:55:58,866 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:55:58,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:55:58,866 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:55:58,866 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:55:58,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:55:58,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:55:58,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:55:58,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:55:58,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:55:58,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:55:58,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:55:58,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 17:55:58,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 17:55:58,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad [2022-07-21 17:55:59,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:55:59,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:55:59,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:55:59,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:55:59,154 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:55:59,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-07-21 17:55:59,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bd30a77/79286b716bdd440d86287adda8e4a0af/FLAG556868503 [2022-07-21 17:55:59,643 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:55:59,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-07-21 17:55:59,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bd30a77/79286b716bdd440d86287adda8e4a0af/FLAG556868503 [2022-07-21 17:56:00,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bd30a77/79286b716bdd440d86287adda8e4a0af [2022-07-21 17:56:00,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:56:00,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:56:00,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:56:00,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:56:00,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:56:00,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7883c06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00, skipping insertion in model container [2022-07-21 17:56:00,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:56:00,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:56:00,283 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_simpl4.cil-2.c[48585,48598] [2022-07-21 17:56:00,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:56:00,291 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 17:56:00,395 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_simpl4.cil-2.c[48585,48598] [2022-07-21 17:56:00,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:56:00,408 INFO L208 MainTranslator]: Completed translation [2022-07-21 17:56:00,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00 WrapperNode [2022-07-21 17:56:00,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:56:00,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 17:56:00,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 17:56:00,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 17:56:00,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,507 INFO L137 Inliner]: procedures = 41, calls = 76, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 1331 [2022-07-21 17:56:00,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 17:56:00,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 17:56:00,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 17:56:00,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 17:56:00,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 17:56:00,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 17:56:00,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 17:56:00,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 17:56:00,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (1/1) ... [2022-07-21 17:56:00,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:56:00,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:56:00,600 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 17:56:00,608 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 17:56:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 17:56:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-21 17:56:00,627 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-21 17:56:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-07-21 17:56:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-07-21 17:56:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-07-21 17:56:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-07-21 17:56:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-07-21 17:56:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-07-21 17:56:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-21 17:56:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-21 17:56:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 17:56:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-21 17:56:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-21 17:56:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-07-21 17:56:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-07-21 17:56:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 17:56:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 17:56:00,802 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 17:56:00,803 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 17:56:00,808 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:00,897 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-07-21 17:56:00,897 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-07-21 17:56:00,898 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:00,912 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-21 17:56:00,913 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-21 17:56:00,921 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:00,948 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:00,952 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:00,953 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:00,956 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:00,956 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:00,959 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:01,343 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume !false; [2022-07-21 17:56:01,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##180: assume false; [2022-07-21 17:56:01,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##181: assume !false; [2022-07-21 17:56:01,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume !false; [2022-07-21 17:56:01,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume false; [2022-07-21 17:56:01,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2022-07-21 17:56:01,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-07-21 17:56:01,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-07-21 17:56:01,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-07-21 17:56:01,345 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-07-21 17:56:01,345 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##169: assume false; [2022-07-21 17:56:01,345 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##236: assume !false; [2022-07-21 17:56:01,345 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume false; [2022-07-21 17:56:01,345 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2022-07-21 17:56:01,346 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:01,363 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-07-21 17:56:01,363 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-07-21 17:56:01,364 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:01,364 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:01,365 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-21 17:56:01,386 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-07-21 17:56:01,387 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-07-21 17:56:01,387 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-07-21 17:56:01,387 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-07-21 17:56:01,387 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-07-21 17:56:01,387 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-07-21 17:56:01,405 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 17:56:01,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 17:56:01,417 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 17:56:01,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:56:01 BoogieIcfgContainer [2022-07-21 17:56:01,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 17:56:01,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 17:56:01,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 17:56:01,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 17:56:01,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:56:00" (1/3) ... [2022-07-21 17:56:01,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e874ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:56:01, skipping insertion in model container [2022-07-21 17:56:01,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:56:00" (2/3) ... [2022-07-21 17:56:01,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e874ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:56:01, skipping insertion in model container [2022-07-21 17:56:01,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:56:01" (3/3) ... [2022-07-21 17:56:01,426 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2022-07-21 17:56:01,436 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 17:56:01,436 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 17:56:01,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 17:56:01,489 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@4f07ce89, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7efefd95 [2022-07-21 17:56:01,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 17:56:01,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 259 states have (on average 1.5250965250965252) internal successors, (395), 285 states have internal predecessors, (395), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-21 17:56:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 17:56:01,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:01,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:01,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:01,518 INFO L85 PathProgramCache]: Analyzing trace with hash -207662691, now seen corresponding path program 1 times [2022-07-21 17:56:01,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:01,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362894428] [2022-07-21 17:56:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:01,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:01,674 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 17:56:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:01,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362894428] [2022-07-21 17:56:01,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362894428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:01,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:01,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:56:01,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779913898] [2022-07-21 17:56:01,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:01,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:56:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:01,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:56:01,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:56:01,707 INFO L87 Difference]: Start difference. First operand has 319 states, 259 states have (on average 1.5250965250965252) internal successors, (395), 285 states have internal predecessors, (395), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) 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 17:56:01,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:01,792 INFO L93 Difference]: Finished difference Result 318 states and 469 transitions. [2022-07-21 17:56:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:56:01,794 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 17:56:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:01,827 INFO L225 Difference]: With dead ends: 318 [2022-07-21 17:56:01,827 INFO L226 Difference]: Without dead ends: 316 [2022-07-21 17:56:01,828 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 17:56:01,830 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 262 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:01,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 630 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-21 17:56:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-07-21 17:56:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 257 states have (on average 1.5058365758754864) internal successors, (387), 281 states have internal predecessors, (387), 50 states have call successors, (50), 7 states have call predecessors, (50), 6 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-21 17:56:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2022-07-21 17:56:01,904 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 8 [2022-07-21 17:56:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:01,907 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2022-07-21 17:56:01,908 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 17:56:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2022-07-21 17:56:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 17:56:01,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:01,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:01,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 17:56:01,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:01,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1841054047, now seen corresponding path program 1 times [2022-07-21 17:56:01,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:01,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348235864] [2022-07-21 17:56:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:01,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:01,993 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 17:56:01,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:01,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348235864] [2022-07-21 17:56:01,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348235864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:01,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:01,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:56:01,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542377462] [2022-07-21 17:56:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:01,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:56:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:56:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:56:01,996 INFO L87 Difference]: Start difference. First operand 315 states and 466 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:56:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,128 INFO L93 Difference]: Finished difference Result 438 states and 641 transitions. [2022-07-21 17:56:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:56:02,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-21 17:56:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,133 INFO L225 Difference]: With dead ends: 438 [2022-07-21 17:56:02,134 INFO L226 Difference]: Without dead ends: 438 [2022-07-21 17:56:02,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 17:56:02,138 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 370 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:02,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 779 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-21 17:56:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 417. [2022-07-21 17:56:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 358 states have (on average 1.4245810055865922) internal successors, (510), 362 states have internal predecessors, (510), 48 states have call successors, (48), 11 states have call predecessors, (48), 9 states have return successors, (52), 44 states have call predecessors, (52), 37 states have call successors, (52) [2022-07-21 17:56:02,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 610 transitions. [2022-07-21 17:56:02,172 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 610 transitions. Word has length 16 [2022-07-21 17:56:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,173 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 610 transitions. [2022-07-21 17:56:02,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:56:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 610 transitions. [2022-07-21 17:56:02,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 17:56:02,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:02,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 17:56:02,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1499851735, now seen corresponding path program 1 times [2022-07-21 17:56:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326595843] [2022-07-21 17:56:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,242 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 17:56:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:02,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326595843] [2022-07-21 17:56:02,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326595843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:02,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:02,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:56:02,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349449618] [2022-07-21 17:56:02,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:02,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:56:02,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:56:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:56:02,245 INFO L87 Difference]: Start difference. First operand 417 states and 610 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:56:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,282 INFO L93 Difference]: Finished difference Result 416 states and 609 transitions. [2022-07-21 17:56:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:56:02,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-21 17:56:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,286 INFO L225 Difference]: With dead ends: 416 [2022-07-21 17:56:02,286 INFO L226 Difference]: Without dead ends: 411 [2022-07-21 17:56:02,288 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 17:56:02,291 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 272 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:02,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 543 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-07-21 17:56:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2022-07-21 17:56:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 353 states have (on average 1.4022662889518414) internal successors, (495), 356 states have internal predecessors, (495), 48 states have call successors, (48), 11 states have call predecessors, (48), 9 states have return successors, (52), 44 states have call predecessors, (52), 37 states have call successors, (52) [2022-07-21 17:56:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 595 transitions. [2022-07-21 17:56:02,311 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 595 transitions. Word has length 14 [2022-07-21 17:56:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,312 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 595 transitions. [2022-07-21 17:56:02,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:56:02,312 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 595 transitions. [2022-07-21 17:56:02,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 17:56:02,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,313 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 17:56:02,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 17:56:02,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash -866854956, now seen corresponding path program 1 times [2022-07-21 17:56:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758923670] [2022-07-21 17:56:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,351 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 17:56:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:02,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758923670] [2022-07-21 17:56:02,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758923670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:02,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:02,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:56:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94237661] [2022-07-21 17:56:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:02,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:56:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:56:02,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:56:02,354 INFO L87 Difference]: Start difference. First operand 411 states and 595 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 17:56:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,379 INFO L93 Difference]: Finished difference Result 497 states and 703 transitions. [2022-07-21 17:56:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:56:02,379 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 17:56:02,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,381 INFO L225 Difference]: With dead ends: 497 [2022-07-21 17:56:02,381 INFO L226 Difference]: Without dead ends: 497 [2022-07-21 17:56:02,381 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 17:56:02,382 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 407 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:02,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 540 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-21 17:56:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 459. [2022-07-21 17:56:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 394 states have (on average 1.3959390862944163) internal successors, (550), 404 states have internal predecessors, (550), 50 states have call successors, (50), 14 states have call predecessors, (50), 14 states have return successors, (59), 43 states have call predecessors, (59), 41 states have call successors, (59) [2022-07-21 17:56:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 659 transitions. [2022-07-21 17:56:02,396 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 659 transitions. Word has length 19 [2022-07-21 17:56:02,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,396 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 659 transitions. [2022-07-21 17:56:02,396 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 17:56:02,396 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 659 transitions. [2022-07-21 17:56:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 17:56:02,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,397 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 17:56:02,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 17:56:02,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash 122564209, now seen corresponding path program 1 times [2022-07-21 17:56:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838986698] [2022-07-21 17:56:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,431 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 17:56:02,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:02,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838986698] [2022-07-21 17:56:02,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838986698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:02,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:02,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:56:02,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134679370] [2022-07-21 17:56:02,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:02,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:56:02,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:02,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:56:02,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:56:02,433 INFO L87 Difference]: Start difference. First operand 459 states and 659 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 17:56:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,451 INFO L93 Difference]: Finished difference Result 638 states and 904 transitions. [2022-07-21 17:56:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:56:02,451 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 17:56:02,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,454 INFO L225 Difference]: With dead ends: 638 [2022-07-21 17:56:02,454 INFO L226 Difference]: Without dead ends: 638 [2022-07-21 17:56:02,454 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 17:56:02,455 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 394 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 655 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 17:56:02,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 655 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-07-21 17:56:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 613. [2022-07-21 17:56:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 531 states have (on average 1.384180790960452) internal successors, (735), 538 states have internal predecessors, (735), 60 states have call successors, (60), 22 states have call predecessors, (60), 21 states have return successors, (80), 55 states have call predecessors, (80), 53 states have call successors, (80) [2022-07-21 17:56:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 875 transitions. [2022-07-21 17:56:02,497 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 875 transitions. Word has length 22 [2022-07-21 17:56:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,504 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 875 transitions. [2022-07-21 17:56:02,504 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 17:56:02,504 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 875 transitions. [2022-07-21 17:56:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 17:56:02,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,506 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 17:56:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 17:56:02,507 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2116337547, now seen corresponding path program 1 times [2022-07-21 17:56:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769662697] [2022-07-21 17:56:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 17:56:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:56:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,542 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 17:56:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:02,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769662697] [2022-07-21 17:56:02,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769662697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:02,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:02,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:56:02,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771924872] [2022-07-21 17:56:02,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:02,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:56:02,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:02,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:56:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:56:02,544 INFO L87 Difference]: Start difference. First operand 613 states and 875 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:56:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,762 INFO L93 Difference]: Finished difference Result 669 states and 949 transitions. [2022-07-21 17:56:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-07-21 17:56:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,765 INFO L225 Difference]: With dead ends: 669 [2022-07-21 17:56:02,766 INFO L226 Difference]: Without dead ends: 669 [2022-07-21 17:56:02,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:02,766 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 115 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:02,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1246 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-07-21 17:56:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 648. [2022-07-21 17:56:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 564 states have (on average 1.375886524822695) internal successors, (776), 571 states have internal predecessors, (776), 60 states have call successors, (60), 22 states have call predecessors, (60), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2022-07-21 17:56:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 921 transitions. [2022-07-21 17:56:02,782 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 921 transitions. Word has length 29 [2022-07-21 17:56:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,782 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 921 transitions. [2022-07-21 17:56:02,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:56:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 921 transitions. [2022-07-21 17:56:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 17:56:02,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,784 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 17:56:02,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 17:56:02,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash -205375653, now seen corresponding path program 1 times [2022-07-21 17:56:02,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527822819] [2022-07-21 17:56:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,812 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 17:56:02,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:02,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527822819] [2022-07-21 17:56:02,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527822819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:02,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:02,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:56:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957054156] [2022-07-21 17:56:02,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:02,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:56:02,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:56:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:56:02,815 INFO L87 Difference]: Start difference. First operand 648 states and 921 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 17:56:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:02,871 INFO L93 Difference]: Finished difference Result 660 states and 937 transitions. [2022-07-21 17:56:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:56:02,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 17:56:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:02,873 INFO L225 Difference]: With dead ends: 660 [2022-07-21 17:56:02,873 INFO L226 Difference]: Without dead ends: 660 [2022-07-21 17:56:02,874 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 17:56:02,874 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 20 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:02,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 778 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:02,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-07-21 17:56:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 659. [2022-07-21 17:56:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 575 states have (on average 1.373913043478261) internal successors, (790), 581 states have internal predecessors, (790), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2022-07-21 17:56:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 935 transitions. [2022-07-21 17:56:02,887 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 935 transitions. Word has length 28 [2022-07-21 17:56:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:02,887 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 935 transitions. [2022-07-21 17:56:02,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 17:56:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 935 transitions. [2022-07-21 17:56:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 17:56:02,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:02,888 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 17:56:02,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 17:56:02,889 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:02,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash -729865897, now seen corresponding path program 1 times [2022-07-21 17:56:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:02,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586317892] [2022-07-21 17:56:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:02,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 17:56:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:56:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,000 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 17:56:03,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:03,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586317892] [2022-07-21 17:56:03,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586317892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:03,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:03,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:56:03,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451870509] [2022-07-21 17:56:03,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:03,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:56:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:03,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:56:03,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:03,002 INFO L87 Difference]: Start difference. First operand 659 states and 935 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 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 17:56:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:03,339 INFO L93 Difference]: Finished difference Result 680 states and 962 transitions. [2022-07-21 17:56:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:03,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 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 30 [2022-07-21 17:56:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:03,342 INFO L225 Difference]: With dead ends: 680 [2022-07-21 17:56:03,342 INFO L226 Difference]: Without dead ends: 680 [2022-07-21 17:56:03,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:56:03,343 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 608 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:03,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1197 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:56:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-21 17:56:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 659. [2022-07-21 17:56:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 575 states have (on average 1.3721739130434782) internal successors, (789), 581 states have internal predecessors, (789), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2022-07-21 17:56:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 934 transitions. [2022-07-21 17:56:03,354 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 934 transitions. Word has length 30 [2022-07-21 17:56:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:03,355 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 934 transitions. [2022-07-21 17:56:03,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 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 17:56:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 934 transitions. [2022-07-21 17:56:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 17:56:03,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:03,356 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 17:56:03,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 17:56:03,356 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:03,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1222819339, now seen corresponding path program 1 times [2022-07-21 17:56:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:03,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958056462] [2022-07-21 17:56:03,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:03,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 17:56:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:56:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,441 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 17:56:03,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:03,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958056462] [2022-07-21 17:56:03,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958056462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:03,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:03,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:56:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126800240] [2022-07-21 17:56:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:03,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:56:03,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:56:03,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:03,443 INFO L87 Difference]: Start difference. First operand 659 states and 934 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 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 17:56:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:03,709 INFO L93 Difference]: Finished difference Result 680 states and 961 transitions. [2022-07-21 17:56:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 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 32 [2022-07-21 17:56:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:03,712 INFO L225 Difference]: With dead ends: 680 [2022-07-21 17:56:03,712 INFO L226 Difference]: Without dead ends: 680 [2022-07-21 17:56:03,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:56:03,713 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 670 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:03,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 951 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-21 17:56:03,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 659. [2022-07-21 17:56:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 575 states have (on average 1.3704347826086956) internal successors, (788), 581 states have internal predecessors, (788), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2022-07-21 17:56:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 933 transitions. [2022-07-21 17:56:03,725 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 933 transitions. Word has length 32 [2022-07-21 17:56:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:03,725 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 933 transitions. [2022-07-21 17:56:03,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 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 17:56:03,726 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 933 transitions. [2022-07-21 17:56:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-21 17:56:03,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:03,727 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] [2022-07-21 17:56:03,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 17:56:03,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:03,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:03,727 INFO L85 PathProgramCache]: Analyzing trace with hash -663319401, now seen corresponding path program 1 times [2022-07-21 17:56:03,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:03,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3617609] [2022-07-21 17:56:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 17:56:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:56:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:03,771 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 17:56:03,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:03,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3617609] [2022-07-21 17:56:03,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3617609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:03,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:03,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:03,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43177461] [2022-07-21 17:56:03,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:03,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:03,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:03,772 INFO L87 Difference]: Start difference. First operand 659 states and 933 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 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 17:56:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,009 INFO L93 Difference]: Finished difference Result 688 states and 969 transitions. [2022-07-21 17:56:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:56:04,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 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 33 [2022-07-21 17:56:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,012 INFO L225 Difference]: With dead ends: 688 [2022-07-21 17:56:04,012 INFO L226 Difference]: Without dead ends: 676 [2022-07-21 17:56:04,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:04,013 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 395 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1470 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-07-21 17:56:04,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 657. [2022-07-21 17:56:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 574 states have (on average 1.3693379790940767) internal successors, (786), 580 states have internal predecessors, (786), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (84), 54 states have call predecessors, (84), 52 states have call successors, (84) [2022-07-21 17:56:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 929 transitions. [2022-07-21 17:56:04,025 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 929 transitions. Word has length 33 [2022-07-21 17:56:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,026 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 929 transitions. [2022-07-21 17:56:04,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 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 17:56:04,026 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 929 transitions. [2022-07-21 17:56:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 17:56:04,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,027 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 17:56:04,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 17:56:04,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2133265312, now seen corresponding path program 1 times [2022-07-21 17:56:04,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787522506] [2022-07-21 17:56:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 17:56:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 17:56:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,067 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 17:56:04,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787522506] [2022-07-21 17:56:04,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787522506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:04,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325120010] [2022-07-21 17:56:04,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:04,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:04,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:04,069 INFO L87 Difference]: Start difference. First operand 657 states and 929 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 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 17:56:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,307 INFO L93 Difference]: Finished difference Result 686 states and 965 transitions. [2022-07-21 17:56:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:56:04,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 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 32 [2022-07-21 17:56:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,310 INFO L225 Difference]: With dead ends: 686 [2022-07-21 17:56:04,310 INFO L226 Difference]: Without dead ends: 669 [2022-07-21 17:56:04,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:04,310 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 394 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1431 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:04,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-07-21 17:56:04,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 650. [2022-07-21 17:56:04,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 570 states have (on average 1.3701754385964913) internal successors, (781), 576 states have internal predecessors, (781), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (82), 52 states have call predecessors, (82), 50 states have call successors, (82) [2022-07-21 17:56:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 920 transitions. [2022-07-21 17:56:04,323 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 920 transitions. Word has length 32 [2022-07-21 17:56:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,323 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 920 transitions. [2022-07-21 17:56:04,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 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 17:56:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 920 transitions. [2022-07-21 17:56:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 17:56:04,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,324 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 17:56:04,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 17:56:04,324 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash -608614884, now seen corresponding path program 1 times [2022-07-21 17:56:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369577679] [2022-07-21 17:56:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,345 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 17:56:04,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369577679] [2022-07-21 17:56:04,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369577679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:56:04,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881917476] [2022-07-21 17:56:04,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:56:04,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:56:04,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:56:04,347 INFO L87 Difference]: Start difference. First operand 650 states and 920 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 17:56:04,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,359 INFO L93 Difference]: Finished difference Result 666 states and 931 transitions. [2022-07-21 17:56:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:56:04,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 30 [2022-07-21 17:56:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,362 INFO L225 Difference]: With dead ends: 666 [2022-07-21 17:56:04,362 INFO L226 Difference]: Without dead ends: 625 [2022-07-21 17:56:04,362 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 17:56:04,362 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 84 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 880 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-07-21 17:56:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 621. [2022-07-21 17:56:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 545 states have (on average 1.3688073394495412) internal successors, (746), 552 states have internal predecessors, (746), 55 states have call successors, (55), 21 states have call predecessors, (55), 20 states have return successors, (78), 48 states have call predecessors, (78), 48 states have call successors, (78) [2022-07-21 17:56:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 879 transitions. [2022-07-21 17:56:04,373 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 879 transitions. Word has length 30 [2022-07-21 17:56:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,373 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 879 transitions. [2022-07-21 17:56:04,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 17:56:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 879 transitions. [2022-07-21 17:56:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 17:56:04,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,374 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 17:56:04,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 17:56:04,375 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,375 INFO L85 PathProgramCache]: Analyzing trace with hash -444205772, now seen corresponding path program 1 times [2022-07-21 17:56:04,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476753949] [2022-07-21 17:56:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,397 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 17:56:04,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476753949] [2022-07-21 17:56:04,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476753949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:56:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509512057] [2022-07-21 17:56:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:56:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:56:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:56:04,399 INFO L87 Difference]: Start difference. First operand 621 states and 879 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 17:56:04,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,425 INFO L93 Difference]: Finished difference Result 637 states and 896 transitions. [2022-07-21 17:56:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:56:04,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 30 [2022-07-21 17:56:04,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,428 INFO L225 Difference]: With dead ends: 637 [2022-07-21 17:56:04,428 INFO L226 Difference]: Without dead ends: 637 [2022-07-21 17:56:04,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 17:56:04,429 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 27 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1213 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:04,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-21 17:56:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 623. [2022-07-21 17:56:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 547 states have (on average 1.3674588665447898) internal successors, (748), 554 states have internal predecessors, (748), 55 states have call successors, (55), 21 states have call predecessors, (55), 20 states have return successors, (78), 48 states have call predecessors, (78), 48 states have call successors, (78) [2022-07-21 17:56:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 881 transitions. [2022-07-21 17:56:04,439 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 881 transitions. Word has length 30 [2022-07-21 17:56:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,439 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 881 transitions. [2022-07-21 17:56:04,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 17:56:04,439 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 881 transitions. [2022-07-21 17:56:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-21 17:56:04,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,440 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 17:56:04,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 17:56:04,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1157172862, now seen corresponding path program 1 times [2022-07-21 17:56:04,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127946916] [2022-07-21 17:56:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,470 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 17:56:04,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127946916] [2022-07-21 17:56:04,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127946916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:56:04,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184117042] [2022-07-21 17:56:04,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:56:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:56:04,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:56:04,472 INFO L87 Difference]: Start difference. First operand 623 states and 881 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 17:56:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,498 INFO L93 Difference]: Finished difference Result 639 states and 898 transitions. [2022-07-21 17:56:04,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:56:04,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 31 [2022-07-21 17:56:04,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,500 INFO L225 Difference]: With dead ends: 639 [2022-07-21 17:56:04,501 INFO L226 Difference]: Without dead ends: 639 [2022-07-21 17:56:04,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 17:56:04,501 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 28 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1217 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-21 17:56:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 623. [2022-07-21 17:56:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 547 states have (on average 1.3674588665447898) internal successors, (748), 554 states have internal predecessors, (748), 55 states have call successors, (55), 21 states have call predecessors, (55), 20 states have return successors, (78), 48 states have call predecessors, (78), 48 states have call successors, (78) [2022-07-21 17:56:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 881 transitions. [2022-07-21 17:56:04,511 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 881 transitions. Word has length 31 [2022-07-21 17:56:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,512 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 881 transitions. [2022-07-21 17:56:04,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 17:56:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 881 transitions. [2022-07-21 17:56:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 17:56:04,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,513 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 17:56:04,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 17:56:04,513 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash 791167666, now seen corresponding path program 1 times [2022-07-21 17:56:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847758561] [2022-07-21 17:56:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,538 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 17:56:04,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847758561] [2022-07-21 17:56:04,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847758561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:56:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425514711] [2022-07-21 17:56:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:56:04,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:56:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:56:04,540 INFO L87 Difference]: Start difference. First operand 623 states and 881 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 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 17:56:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,732 INFO L93 Difference]: Finished difference Result 881 states and 1243 transitions. [2022-07-21 17:56:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:56:04,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 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 34 [2022-07-21 17:56:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,735 INFO L225 Difference]: With dead ends: 881 [2022-07-21 17:56:04,735 INFO L226 Difference]: Without dead ends: 881 [2022-07-21 17:56:04,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:56:04,736 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 162 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1105 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-07-21 17:56:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 702. [2022-07-21 17:56:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 622 states have (on average 1.3762057877813505) internal successors, (856), 630 states have internal predecessors, (856), 57 states have call successors, (57), 23 states have call predecessors, (57), 22 states have return successors, (80), 49 states have call predecessors, (80), 50 states have call successors, (80) [2022-07-21 17:56:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 993 transitions. [2022-07-21 17:56:04,749 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 993 transitions. Word has length 34 [2022-07-21 17:56:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,749 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 993 transitions. [2022-07-21 17:56:04,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 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 17:56:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 993 transitions. [2022-07-21 17:56:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-21 17:56:04,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,750 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] [2022-07-21 17:56:04,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 17:56:04,750 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1367133224, now seen corresponding path program 1 times [2022-07-21 17:56:04,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130895907] [2022-07-21 17:56:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 17:56:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,775 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 17:56:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130895907] [2022-07-21 17:56:04,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130895907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:56:04,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412423777] [2022-07-21 17:56:04,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:56:04,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:56:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:56:04,777 INFO L87 Difference]: Start difference. First operand 702 states and 993 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 17:56:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:04,900 INFO L93 Difference]: Finished difference Result 730 states and 1027 transitions. [2022-07-21 17:56:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:56:04,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 33 [2022-07-21 17:56:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:04,902 INFO L225 Difference]: With dead ends: 730 [2022-07-21 17:56:04,902 INFO L226 Difference]: Without dead ends: 717 [2022-07-21 17:56:04,902 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 17:56:04,903 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 85 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:04,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1388 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-07-21 17:56:04,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 700. [2022-07-21 17:56:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 621 states have (on average 1.3752012882447664) internal successors, (854), 629 states have internal predecessors, (854), 56 states have call successors, (56), 23 states have call predecessors, (56), 22 states have return successors, (79), 48 states have call predecessors, (79), 49 states have call successors, (79) [2022-07-21 17:56:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 989 transitions. [2022-07-21 17:56:04,913 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 989 transitions. Word has length 33 [2022-07-21 17:56:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:04,913 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 989 transitions. [2022-07-21 17:56:04,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 17:56:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 989 transitions. [2022-07-21 17:56:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:56:04,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:04,914 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] [2022-07-21 17:56:04,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 17:56:04,915 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:04,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1481962220, now seen corresponding path program 1 times [2022-07-21 17:56:04,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:04,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096516442] [2022-07-21 17:56:04,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:04,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:04,957 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 17:56:04,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:04,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096516442] [2022-07-21 17:56:04,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096516442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:04,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:04,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:56:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355920519] [2022-07-21 17:56:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:04,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:56:04,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:56:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:56:04,958 INFO L87 Difference]: Start difference. First operand 700 states and 989 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 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 17:56:05,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:05,242 INFO L93 Difference]: Finished difference Result 729 states and 1012 transitions. [2022-07-21 17:56:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 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 35 [2022-07-21 17:56:05,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:05,245 INFO L225 Difference]: With dead ends: 729 [2022-07-21 17:56:05,245 INFO L226 Difference]: Without dead ends: 729 [2022-07-21 17:56:05,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:05,245 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 721 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:05,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 935 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-07-21 17:56:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 691. [2022-07-21 17:56:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 612 states have (on average 1.3611111111111112) internal successors, (833), 620 states have internal predecessors, (833), 56 states have call successors, (56), 23 states have call predecessors, (56), 22 states have return successors, (79), 48 states have call predecessors, (79), 49 states have call successors, (79) [2022-07-21 17:56:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 968 transitions. [2022-07-21 17:56:05,255 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 968 transitions. Word has length 35 [2022-07-21 17:56:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:05,256 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 968 transitions. [2022-07-21 17:56:05,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 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 17:56:05,256 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 968 transitions. [2022-07-21 17:56:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:56:05,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:05,257 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] [2022-07-21 17:56:05,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 17:56:05,257 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:05,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1698462691, now seen corresponding path program 1 times [2022-07-21 17:56:05,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:05,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650303351] [2022-07-21 17:56:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:05,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:56:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,283 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 17:56:05,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:05,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650303351] [2022-07-21 17:56:05,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650303351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:05,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:05,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:56:05,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610254065] [2022-07-21 17:56:05,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:05,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:56:05,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:56:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:56:05,284 INFO L87 Difference]: Start difference. First operand 691 states and 968 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 17:56:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:05,403 INFO L93 Difference]: Finished difference Result 719 states and 1002 transitions. [2022-07-21 17:56:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:56:05,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 35 [2022-07-21 17:56:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:05,406 INFO L225 Difference]: With dead ends: 719 [2022-07-21 17:56:05,406 INFO L226 Difference]: Without dead ends: 706 [2022-07-21 17:56:05,406 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 17:56:05,406 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 85 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:05,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1375 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-07-21 17:56:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 689. [2022-07-21 17:56:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 611 states have (on average 1.3600654664484453) internal successors, (831), 619 states have internal predecessors, (831), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (78), 47 states have call predecessors, (78), 48 states have call successors, (78) [2022-07-21 17:56:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 964 transitions. [2022-07-21 17:56:05,417 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 964 transitions. Word has length 35 [2022-07-21 17:56:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:05,417 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 964 transitions. [2022-07-21 17:56:05,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 17:56:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 964 transitions. [2022-07-21 17:56:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 17:56:05,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:05,418 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] [2022-07-21 17:56:05,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 17:56:05,418 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1261225060, now seen corresponding path program 1 times [2022-07-21 17:56:05,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:05,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652348345] [2022-07-21 17:56:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,438 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 17:56:05,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:05,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652348345] [2022-07-21 17:56:05,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652348345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:05,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:05,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:56:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730694925] [2022-07-21 17:56:05,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:05,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:56:05,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:56:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:56:05,440 INFO L87 Difference]: Start difference. First operand 689 states and 964 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 17:56:05,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:05,470 INFO L93 Difference]: Finished difference Result 697 states and 975 transitions. [2022-07-21 17:56:05,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:56:05,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 37 [2022-07-21 17:56:05,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:05,473 INFO L225 Difference]: With dead ends: 697 [2022-07-21 17:56:05,473 INFO L226 Difference]: Without dead ends: 697 [2022-07-21 17:56:05,473 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 17:56:05,474 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 5 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:05,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 766 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:56:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-07-21 17:56:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2022-07-21 17:56:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 619 states have (on average 1.3602584814216478) internal successors, (842), 627 states have internal predecessors, (842), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (78), 47 states have call predecessors, (78), 48 states have call successors, (78) [2022-07-21 17:56:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 975 transitions. [2022-07-21 17:56:05,485 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 975 transitions. Word has length 37 [2022-07-21 17:56:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:05,485 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 975 transitions. [2022-07-21 17:56:05,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 17:56:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 975 transitions. [2022-07-21 17:56:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 17:56:05,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:05,486 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 17:56:05,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 17:56:05,487 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:05,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:05,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1320764659, now seen corresponding path program 1 times [2022-07-21 17:56:05,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:05,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815500763] [2022-07-21 17:56:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:05,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 17:56:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,518 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 17:56:05,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:05,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815500763] [2022-07-21 17:56:05,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815500763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:05,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:05,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:05,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914459838] [2022-07-21 17:56:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:05,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:05,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:05,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:05,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:05,520 INFO L87 Difference]: Start difference. First operand 697 states and 975 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 17:56:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:05,691 INFO L93 Difference]: Finished difference Result 719 states and 999 transitions. [2022-07-21 17:56:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 38 [2022-07-21 17:56:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:05,693 INFO L225 Difference]: With dead ends: 719 [2022-07-21 17:56:05,694 INFO L226 Difference]: Without dead ends: 704 [2022-07-21 17:56:05,694 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 17:56:05,694 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 96 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:05,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1693 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-21 17:56:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 697. [2022-07-21 17:56:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 619 states have (on average 1.3408723747980613) internal successors, (830), 627 states have internal predecessors, (830), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (78), 47 states have call predecessors, (78), 48 states have call successors, (78) [2022-07-21 17:56:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 963 transitions. [2022-07-21 17:56:05,705 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 963 transitions. Word has length 38 [2022-07-21 17:56:05,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:05,705 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 963 transitions. [2022-07-21 17:56:05,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 17:56:05,705 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 963 transitions. [2022-07-21 17:56:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 17:56:05,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:05,706 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 17:56:05,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 17:56:05,706 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:05,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash -257120717, now seen corresponding path program 1 times [2022-07-21 17:56:05,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:05,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139703392] [2022-07-21 17:56:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:05,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 17:56:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:05,751 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 17:56:05,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:05,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139703392] [2022-07-21 17:56:05,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139703392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:05,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:05,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:05,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295593712] [2022-07-21 17:56:05,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:05,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:05,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:05,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:05,753 INFO L87 Difference]: Start difference. First operand 697 states and 963 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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 17:56:06,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:06,044 INFO L93 Difference]: Finished difference Result 717 states and 983 transitions. [2022-07-21 17:56:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 17:56:06,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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 38 [2022-07-21 17:56:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:06,047 INFO L225 Difference]: With dead ends: 717 [2022-07-21 17:56:06,047 INFO L226 Difference]: Without dead ends: 717 [2022-07-21 17:56:06,047 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 17:56:06,048 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 525 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:06,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1399 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-07-21 17:56:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 707. [2022-07-21 17:56:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 626 states have (on average 1.3354632587859425) internal successors, (836), 637 states have internal predecessors, (836), 55 states have call successors, (55), 23 states have call predecessors, (55), 25 states have return successors, (82), 47 states have call predecessors, (82), 48 states have call successors, (82) [2022-07-21 17:56:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 973 transitions. [2022-07-21 17:56:06,059 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 973 transitions. Word has length 38 [2022-07-21 17:56:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:06,059 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 973 transitions. [2022-07-21 17:56:06,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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 17:56:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 973 transitions. [2022-07-21 17:56:06,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 17:56:06,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:06,060 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] [2022-07-21 17:56:06,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 17:56:06,060 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1775362044, now seen corresponding path program 1 times [2022-07-21 17:56:06,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:06,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635068065] [2022-07-21 17:56:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 17:56:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,097 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 17:56:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:06,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635068065] [2022-07-21 17:56:06,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635068065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:06,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:06,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:06,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486096438] [2022-07-21 17:56:06,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:06,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:06,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:06,099 INFO L87 Difference]: Start difference. First operand 707 states and 973 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 17:56:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:06,279 INFO L93 Difference]: Finished difference Result 724 states and 990 transitions. [2022-07-21 17:56:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:56:06,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 39 [2022-07-21 17:56:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:06,283 INFO L225 Difference]: With dead ends: 724 [2022-07-21 17:56:06,283 INFO L226 Difference]: Without dead ends: 705 [2022-07-21 17:56:06,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:06,284 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 329 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:06,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1719 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-07-21 17:56:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 699. [2022-07-21 17:56:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 619 states have (on average 1.3344103392568658) internal successors, (826), 630 states have internal predecessors, (826), 54 states have call successors, (54), 23 states have call predecessors, (54), 25 states have return successors, (81), 46 states have call predecessors, (81), 47 states have call successors, (81) [2022-07-21 17:56:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 961 transitions. [2022-07-21 17:56:06,306 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 961 transitions. Word has length 39 [2022-07-21 17:56:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:06,307 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 961 transitions. [2022-07-21 17:56:06,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 17:56:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 961 transitions. [2022-07-21 17:56:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 17:56:06,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:06,308 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] [2022-07-21 17:56:06,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 17:56:06,308 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash 777524033, now seen corresponding path program 1 times [2022-07-21 17:56:06,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:06,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929635975] [2022-07-21 17:56:06,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:06,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,343 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 17:56:06,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:06,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929635975] [2022-07-21 17:56:06,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929635975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:06,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:06,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688651017] [2022-07-21 17:56:06,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:06,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:06,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:06,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:06,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:06,345 INFO L87 Difference]: Start difference. First operand 699 states and 961 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 17:56:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:06,543 INFO L93 Difference]: Finished difference Result 734 states and 1000 transitions. [2022-07-21 17:56:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:06,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 39 [2022-07-21 17:56:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:06,546 INFO L225 Difference]: With dead ends: 734 [2022-07-21 17:56:06,546 INFO L226 Difference]: Without dead ends: 709 [2022-07-21 17:56:06,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:56:06,546 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 343 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:06,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1636 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:06,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-07-21 17:56:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 686. [2022-07-21 17:56:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 607 states have (on average 1.331136738056013) internal successors, (808), 618 states have internal predecessors, (808), 53 states have call successors, (53), 23 states have call predecessors, (53), 25 states have return successors, (80), 45 states have call predecessors, (80), 46 states have call successors, (80) [2022-07-21 17:56:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 941 transitions. [2022-07-21 17:56:06,557 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 941 transitions. Word has length 39 [2022-07-21 17:56:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:06,557 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 941 transitions. [2022-07-21 17:56:06,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 17:56:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 941 transitions. [2022-07-21 17:56:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 17:56:06,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:06,558 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] [2022-07-21 17:56:06,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 17:56:06,558 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1595982943, now seen corresponding path program 1 times [2022-07-21 17:56:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:06,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711216711] [2022-07-21 17:56:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:06,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,600 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 17:56:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:06,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711216711] [2022-07-21 17:56:06,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711216711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:06,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:06,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311965652] [2022-07-21 17:56:06,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:06,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:06,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:06,602 INFO L87 Difference]: Start difference. First operand 686 states and 941 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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 17:56:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:06,814 INFO L93 Difference]: Finished difference Result 692 states and 947 transitions. [2022-07-21 17:56:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:56:06,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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 39 [2022-07-21 17:56:06,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:06,817 INFO L225 Difference]: With dead ends: 692 [2022-07-21 17:56:06,817 INFO L226 Difference]: Without dead ends: 689 [2022-07-21 17:56:06,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 17:56:06,818 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 58 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:06,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1679 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:06,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-07-21 17:56:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 688. [2022-07-21 17:56:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 608 states have (on average 1.330592105263158) internal successors, (809), 620 states have internal predecessors, (809), 53 states have call successors, (53), 23 states have call predecessors, (53), 26 states have return successors, (81), 45 states have call predecessors, (81), 46 states have call successors, (81) [2022-07-21 17:56:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 943 transitions. [2022-07-21 17:56:06,828 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 943 transitions. Word has length 39 [2022-07-21 17:56:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:06,828 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 943 transitions. [2022-07-21 17:56:06,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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 17:56:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 943 transitions. [2022-07-21 17:56:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 17:56:06,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:06,829 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 17:56:06,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 17:56:06,829 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -398634571, now seen corresponding path program 1 times [2022-07-21 17:56:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:06,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604303375] [2022-07-21 17:56:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:06,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:06,859 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 17:56:06,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604303375] [2022-07-21 17:56:06,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604303375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:06,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:06,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:56:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436847287] [2022-07-21 17:56:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:06,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:56:06,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:06,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:56:06,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:56:06,861 INFO L87 Difference]: Start difference. First operand 688 states and 943 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 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 17:56:07,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:07,045 INFO L93 Difference]: Finished difference Result 510 states and 668 transitions. [2022-07-21 17:56:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:07,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 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 17:56:07,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:07,048 INFO L225 Difference]: With dead ends: 510 [2022-07-21 17:56:07,049 INFO L226 Difference]: Without dead ends: 510 [2022-07-21 17:56:07,049 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 17:56:07,050 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 478 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:07,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 937 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:07,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-07-21 17:56:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 469. [2022-07-21 17:56:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 411 states have (on average 1.29683698296837) internal successors, (533), 422 states have internal predecessors, (533), 38 states have call successors, (38), 16 states have call predecessors, (38), 19 states have return successors, (45), 31 states have call predecessors, (45), 31 states have call successors, (45) [2022-07-21 17:56:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 616 transitions. [2022-07-21 17:56:07,059 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 616 transitions. Word has length 41 [2022-07-21 17:56:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:07,060 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 616 transitions. [2022-07-21 17:56:07,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 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 17:56:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 616 transitions. [2022-07-21 17:56:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 17:56:07,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:07,061 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 17:56:07,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 17:56:07,061 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:07,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1554772088, now seen corresponding path program 1 times [2022-07-21 17:56:07,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:07,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894893762] [2022-07-21 17:56:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:07,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 17:56:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,102 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 17:56:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:07,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894893762] [2022-07-21 17:56:07,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894893762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:07,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:07,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:56:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165913908] [2022-07-21 17:56:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:07,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:56:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:56:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:56:07,104 INFO L87 Difference]: Start difference. First operand 469 states and 616 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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 17:56:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:07,262 INFO L93 Difference]: Finished difference Result 599 states and 783 transitions. [2022-07-21 17:56:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:56:07,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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 17:56:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:07,264 INFO L225 Difference]: With dead ends: 599 [2022-07-21 17:56:07,264 INFO L226 Difference]: Without dead ends: 583 [2022-07-21 17:56:07,265 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 17:56:07,265 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 180 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:07,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 951 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-07-21 17:56:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 523. [2022-07-21 17:56:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 459 states have (on average 1.289760348583878) internal successors, (592), 464 states have internal predecessors, (592), 40 states have call successors, (40), 18 states have call predecessors, (40), 23 states have return successors, (57), 41 states have call predecessors, (57), 33 states have call successors, (57) [2022-07-21 17:56:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 689 transitions. [2022-07-21 17:56:07,274 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 689 transitions. Word has length 40 [2022-07-21 17:56:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:07,274 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 689 transitions. [2022-07-21 17:56:07,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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 17:56:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 689 transitions. [2022-07-21 17:56:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 17:56:07,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:07,275 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 17:56:07,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 17:56:07,275 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2126401672, now seen corresponding path program 1 times [2022-07-21 17:56:07,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:07,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252361786] [2022-07-21 17:56:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:07,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 17:56:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,325 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 17:56:07,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:07,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252361786] [2022-07-21 17:56:07,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252361786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:07,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:07,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:07,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5814679] [2022-07-21 17:56:07,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:07,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:07,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:07,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:07,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:07,327 INFO L87 Difference]: Start difference. First operand 523 states and 689 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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 17:56:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:07,559 INFO L93 Difference]: Finished difference Result 515 states and 683 transitions. [2022-07-21 17:56:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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 17:56:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:07,561 INFO L225 Difference]: With dead ends: 515 [2022-07-21 17:56:07,561 INFO L226 Difference]: Without dead ends: 474 [2022-07-21 17:56:07,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:56:07,562 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 447 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:07,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1030 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-07-21 17:56:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 447. [2022-07-21 17:56:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 391 states have (on average 1.3094629156010231) internal successors, (512), 403 states have internal predecessors, (512), 37 states have call successors, (37), 15 states have call predecessors, (37), 18 states have return successors, (45), 29 states have call predecessors, (45), 30 states have call successors, (45) [2022-07-21 17:56:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 594 transitions. [2022-07-21 17:56:07,569 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 594 transitions. Word has length 40 [2022-07-21 17:56:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:07,569 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 594 transitions. [2022-07-21 17:56:07,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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 17:56:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 594 transitions. [2022-07-21 17:56:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 17:56:07,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:07,570 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 17:56:07,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 17:56:07,570 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:07,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1405383092, now seen corresponding path program 1 times [2022-07-21 17:56:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596751663] [2022-07-21 17:56:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 17:56:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,623 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 17:56:07,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:07,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596751663] [2022-07-21 17:56:07,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596751663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:07,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:07,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:56:07,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838930909] [2022-07-21 17:56:07,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:07,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:56:07,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:07,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:56:07,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:07,626 INFO L87 Difference]: Start difference. First operand 447 states and 594 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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 17:56:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:07,876 INFO L93 Difference]: Finished difference Result 492 states and 657 transitions. [2022-07-21 17:56:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:07,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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 17:56:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:07,878 INFO L225 Difference]: With dead ends: 492 [2022-07-21 17:56:07,878 INFO L226 Difference]: Without dead ends: 491 [2022-07-21 17:56:07,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 17:56:07,878 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 282 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:07,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1759 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-07-21 17:56:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 462. [2022-07-21 17:56:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 405 states have (on average 1.2987654320987654) internal successors, (526), 417 states have internal predecessors, (526), 37 states have call successors, (37), 15 states have call predecessors, (37), 19 states have return successors, (53), 30 states have call predecessors, (53), 30 states have call successors, (53) [2022-07-21 17:56:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 616 transitions. [2022-07-21 17:56:07,884 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 616 transitions. Word has length 41 [2022-07-21 17:56:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:07,885 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 616 transitions. [2022-07-21 17:56:07,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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 17:56:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 616 transitions. [2022-07-21 17:56:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 17:56:07,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:07,885 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 17:56:07,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 17:56:07,885 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1405659922, now seen corresponding path program 1 times [2022-07-21 17:56:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:07,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406803317] [2022-07-21 17:56:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 17:56:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:07,948 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 17:56:07,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:07,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406803317] [2022-07-21 17:56:07,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406803317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:07,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:07,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:56:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880805312] [2022-07-21 17:56:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:07,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:56:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:07,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:56:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:07,950 INFO L87 Difference]: Start difference. First operand 462 states and 616 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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 17:56:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:08,194 INFO L93 Difference]: Finished difference Result 479 states and 634 transitions. [2022-07-21 17:56:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:08,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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 17:56:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:08,196 INFO L225 Difference]: With dead ends: 479 [2022-07-21 17:56:08,196 INFO L226 Difference]: Without dead ends: 469 [2022-07-21 17:56:08,196 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 17:56:08,196 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 78 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:08,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1895 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-07-21 17:56:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 459. [2022-07-21 17:56:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 402 states have (on average 1.300995024875622) internal successors, (523), 415 states have internal predecessors, (523), 37 states have call successors, (37), 15 states have call predecessors, (37), 19 states have return successors, (52), 29 states have call predecessors, (52), 30 states have call successors, (52) [2022-07-21 17:56:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 612 transitions. [2022-07-21 17:56:08,202 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 612 transitions. Word has length 41 [2022-07-21 17:56:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:08,202 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 612 transitions. [2022-07-21 17:56:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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 17:56:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 612 transitions. [2022-07-21 17:56:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 17:56:08,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:08,203 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 17:56:08,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 17:56:08,207 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:08,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash 188020548, now seen corresponding path program 1 times [2022-07-21 17:56:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:08,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363716313] [2022-07-21 17:56:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:08,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 17:56:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:08,261 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 17:56:08,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:08,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363716313] [2022-07-21 17:56:08,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363716313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:08,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:08,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:08,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594876439] [2022-07-21 17:56:08,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:08,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:08,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:08,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:08,263 INFO L87 Difference]: Start difference. First operand 459 states and 612 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 17:56:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:08,548 INFO L93 Difference]: Finished difference Result 515 states and 681 transitions. [2022-07-21 17:56:08,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:08,549 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 17:56:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:08,550 INFO L225 Difference]: With dead ends: 515 [2022-07-21 17:56:08,550 INFO L226 Difference]: Without dead ends: 503 [2022-07-21 17:56:08,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:56:08,551 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 600 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:08,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1073 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-07-21 17:56:08,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 445. [2022-07-21 17:56:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 390 states have (on average 1.3076923076923077) internal successors, (510), 402 states have internal predecessors, (510), 36 states have call successors, (36), 15 states have call predecessors, (36), 18 states have return successors, (44), 28 states have call predecessors, (44), 29 states have call successors, (44) [2022-07-21 17:56:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 590 transitions. [2022-07-21 17:56:08,557 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 590 transitions. Word has length 42 [2022-07-21 17:56:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:08,557 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 590 transitions. [2022-07-21 17:56:08,557 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 17:56:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 590 transitions. [2022-07-21 17:56:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 17:56:08,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:08,558 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 17:56:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 17:56:08,558 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:08,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1315082489, now seen corresponding path program 1 times [2022-07-21 17:56:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:08,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526333120] [2022-07-21 17:56:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:08,628 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 17:56:08,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526333120] [2022-07-21 17:56:08,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526333120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:08,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:08,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:08,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624467184] [2022-07-21 17:56:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:08,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:08,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:08,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:08,630 INFO L87 Difference]: Start difference. First operand 445 states and 590 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 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 17:56:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:08,809 INFO L93 Difference]: Finished difference Result 405 states and 531 transitions. [2022-07-21 17:56:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:56:08,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 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 44 [2022-07-21 17:56:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:08,810 INFO L225 Difference]: With dead ends: 405 [2022-07-21 17:56:08,811 INFO L226 Difference]: Without dead ends: 405 [2022-07-21 17:56:08,811 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 17:56:08,811 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 102 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:08,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1714 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-21 17:56:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 399. [2022-07-21 17:56:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 350 states have (on average 1.2885714285714285) internal successors, (451), 358 states have internal predecessors, (451), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (39), 27 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-21 17:56:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 524 transitions. [2022-07-21 17:56:08,816 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 524 transitions. Word has length 44 [2022-07-21 17:56:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:08,817 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 524 transitions. [2022-07-21 17:56:08,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 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 17:56:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 524 transitions. [2022-07-21 17:56:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 17:56:08,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:08,818 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 17:56:08,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 17:56:08,818 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:08,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:08,818 INFO L85 PathProgramCache]: Analyzing trace with hash 817778302, now seen corresponding path program 1 times [2022-07-21 17:56:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:08,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170844361] [2022-07-21 17:56:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:08,888 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 17:56:08,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:08,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170844361] [2022-07-21 17:56:08,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170844361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:08,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:08,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907381774] [2022-07-21 17:56:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:08,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:08,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:08,889 INFO L87 Difference]: Start difference. First operand 399 states and 524 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 17:56:09,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:09,089 INFO L93 Difference]: Finished difference Result 405 states and 529 transitions. [2022-07-21 17:56:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:09,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 46 [2022-07-21 17:56:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:09,091 INFO L225 Difference]: With dead ends: 405 [2022-07-21 17:56:09,091 INFO L226 Difference]: Without dead ends: 405 [2022-07-21 17:56:09,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:09,092 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 390 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:09,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1008 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-21 17:56:09,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 399. [2022-07-21 17:56:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 350 states have (on average 1.282857142857143) internal successors, (449), 358 states have internal predecessors, (449), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (39), 27 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-21 17:56:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 522 transitions. [2022-07-21 17:56:09,097 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 522 transitions. Word has length 46 [2022-07-21 17:56:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:09,097 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 522 transitions. [2022-07-21 17:56:09,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 17:56:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 522 transitions. [2022-07-21 17:56:09,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 17:56:09,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:09,098 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 17:56:09,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 17:56:09,098 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash 351110669, now seen corresponding path program 1 times [2022-07-21 17:56:09,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:09,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50896425] [2022-07-21 17:56:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:09,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 17:56:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,142 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 17:56:09,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:09,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50896425] [2022-07-21 17:56:09,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50896425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:09,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:09,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:56:09,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055973056] [2022-07-21 17:56:09,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:09,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:56:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:09,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:56:09,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:09,144 INFO L87 Difference]: Start difference. First operand 399 states and 522 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 17:56:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:09,382 INFO L93 Difference]: Finished difference Result 414 states and 537 transitions. [2022-07-21 17:56:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:09,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 46 [2022-07-21 17:56:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:09,383 INFO L225 Difference]: With dead ends: 414 [2022-07-21 17:56:09,383 INFO L226 Difference]: Without dead ends: 401 [2022-07-21 17:56:09,384 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 17:56:09,384 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 74 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:09,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1883 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-07-21 17:56:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 395. [2022-07-21 17:56:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 347 states have (on average 1.282420749279539) internal successors, (445), 355 states have internal predecessors, (445), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (38), 26 states have call predecessors, (38), 27 states have call successors, (38) [2022-07-21 17:56:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 516 transitions. [2022-07-21 17:56:09,389 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 516 transitions. Word has length 46 [2022-07-21 17:56:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:09,389 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 516 transitions. [2022-07-21 17:56:09,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 17:56:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 516 transitions. [2022-07-21 17:56:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 17:56:09,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:09,389 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 17:56:09,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 17:56:09,390 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:09,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2034007966, now seen corresponding path program 1 times [2022-07-21 17:56:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:09,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415599282] [2022-07-21 17:56:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:09,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:56:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,426 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 17:56:09,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:09,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415599282] [2022-07-21 17:56:09,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415599282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:09,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:09,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:09,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959249599] [2022-07-21 17:56:09,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:09,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:09,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:09,428 INFO L87 Difference]: Start difference. First operand 395 states and 516 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 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 17:56:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:09,712 INFO L93 Difference]: Finished difference Result 415 states and 537 transitions. [2022-07-21 17:56:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:09,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 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 48 [2022-07-21 17:56:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:09,714 INFO L225 Difference]: With dead ends: 415 [2022-07-21 17:56:09,714 INFO L226 Difference]: Without dead ends: 396 [2022-07-21 17:56:09,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:09,715 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 148 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:09,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1379 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:56:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-21 17:56:09,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 390. [2022-07-21 17:56:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 344 states have (on average 1.2819767441860466) internal successors, (441), 351 states have internal predecessors, (441), 32 states have call successors, (32), 13 states have call predecessors, (32), 13 states have return successors, (37), 26 states have call predecessors, (37), 26 states have call successors, (37) [2022-07-21 17:56:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 510 transitions. [2022-07-21 17:56:09,719 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 510 transitions. Word has length 48 [2022-07-21 17:56:09,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:09,720 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 510 transitions. [2022-07-21 17:56:09,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 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 17:56:09,720 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 510 transitions. [2022-07-21 17:56:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-21 17:56:09,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:09,720 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 17:56:09,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 17:56:09,721 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:09,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1900155685, now seen corresponding path program 1 times [2022-07-21 17:56:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:09,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87364689] [2022-07-21 17:56:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:09,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,757 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 17:56:09,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:09,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87364689] [2022-07-21 17:56:09,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87364689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:09,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:09,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:56:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582931768] [2022-07-21 17:56:09,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:09,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:56:09,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:09,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:56:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:56:09,759 INFO L87 Difference]: Start difference. First operand 390 states and 510 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 17:56:09,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:09,883 INFO L93 Difference]: Finished difference Result 475 states and 614 transitions. [2022-07-21 17:56:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:56:09,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 49 [2022-07-21 17:56:09,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:09,885 INFO L225 Difference]: With dead ends: 475 [2022-07-21 17:56:09,885 INFO L226 Difference]: Without dead ends: 475 [2022-07-21 17:56:09,885 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 17:56:09,885 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 189 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:09,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 849 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:09,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-07-21 17:56:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 443. [2022-07-21 17:56:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 392 states have (on average 1.280612244897959) internal successors, (502), 398 states have internal predecessors, (502), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (43), 30 states have call predecessors, (43), 29 states have call successors, (43) [2022-07-21 17:56:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 579 transitions. [2022-07-21 17:56:09,893 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 579 transitions. Word has length 49 [2022-07-21 17:56:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:09,893 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 579 transitions. [2022-07-21 17:56:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 17:56:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 579 transitions. [2022-07-21 17:56:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 17:56:09,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:09,894 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 17:56:09,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 17:56:09,894 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash 785908469, now seen corresponding path program 1 times [2022-07-21 17:56:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:09,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98472876] [2022-07-21 17:56:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:09,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:09,927 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 17:56:09,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:09,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98472876] [2022-07-21 17:56:09,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98472876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:09,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:09,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:56:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584643238] [2022-07-21 17:56:09,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:09,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:56:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:56:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:56:09,929 INFO L87 Difference]: Start difference. First operand 443 states and 579 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 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 17:56:10,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:10,060 INFO L93 Difference]: Finished difference Result 456 states and 595 transitions. [2022-07-21 17:56:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:56:10,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 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 17:56:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:10,063 INFO L225 Difference]: With dead ends: 456 [2022-07-21 17:56:10,063 INFO L226 Difference]: Without dead ends: 456 [2022-07-21 17:56:10,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 17:56:10,063 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 70 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:10,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1058 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-07-21 17:56:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 445. [2022-07-21 17:56:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 394 states have (on average 1.2791878172588833) internal successors, (504), 400 states have internal predecessors, (504), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (43), 30 states have call predecessors, (43), 29 states have call successors, (43) [2022-07-21 17:56:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 581 transitions. [2022-07-21 17:56:10,069 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 581 transitions. Word has length 48 [2022-07-21 17:56:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:10,069 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 581 transitions. [2022-07-21 17:56:10,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 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 17:56:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 581 transitions. [2022-07-21 17:56:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 17:56:10,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:10,070 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 17:56:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 17:56:10,071 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:10,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1427465013, now seen corresponding path program 1 times [2022-07-21 17:56:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:10,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199381477] [2022-07-21 17:56:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:10,141 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 17:56:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:10,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199381477] [2022-07-21 17:56:10,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199381477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:10,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:10,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:56:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261139339] [2022-07-21 17:56:10,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:10,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:56:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:56:10,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:10,144 INFO L87 Difference]: Start difference. First operand 445 states and 581 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 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 17:56:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:10,357 INFO L93 Difference]: Finished difference Result 433 states and 564 transitions. [2022-07-21 17:56:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:10,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 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 17:56:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:10,359 INFO L225 Difference]: With dead ends: 433 [2022-07-21 17:56:10,359 INFO L226 Difference]: Without dead ends: 419 [2022-07-21 17:56:10,359 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 17:56:10,359 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 55 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:10,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1786 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-07-21 17:56:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2022-07-21 17:56:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 369 states have (on average 1.2628726287262872) internal successors, (466), 373 states have internal predecessors, (466), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2022-07-21 17:56:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 539 transitions. [2022-07-21 17:56:10,365 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 539 transitions. Word has length 48 [2022-07-21 17:56:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:10,365 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 539 transitions. [2022-07-21 17:56:10,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 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 17:56:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 539 transitions. [2022-07-21 17:56:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 17:56:10,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:10,366 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 17:56:10,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 17:56:10,366 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash 827652383, now seen corresponding path program 1 times [2022-07-21 17:56:10,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:10,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954518282] [2022-07-21 17:56:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:10,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:56:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:10,415 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 17:56:10,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:10,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954518282] [2022-07-21 17:56:10,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954518282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:10,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:10,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:10,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011298552] [2022-07-21 17:56:10,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:10,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:10,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:10,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:10,417 INFO L87 Difference]: Start difference. First operand 417 states and 539 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 17:56:10,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:10,636 INFO L93 Difference]: Finished difference Result 446 states and 574 transitions. [2022-07-21 17:56:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:10,636 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 17:56:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:10,637 INFO L225 Difference]: With dead ends: 446 [2022-07-21 17:56:10,638 INFO L226 Difference]: Without dead ends: 446 [2022-07-21 17:56:10,638 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 17:56:10,638 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 81 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:10,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1620 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-07-21 17:56:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 417. [2022-07-21 17:56:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 369 states have (on average 1.2574525745257452) internal successors, (464), 373 states have internal predecessors, (464), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2022-07-21 17:56:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 537 transitions. [2022-07-21 17:56:10,643 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 537 transitions. Word has length 51 [2022-07-21 17:56:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:10,644 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 537 transitions. [2022-07-21 17:56:10,644 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 17:56:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 537 transitions. [2022-07-21 17:56:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 17:56:10,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:10,645 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 17:56:10,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 17:56:10,645 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash 141980076, now seen corresponding path program 1 times [2022-07-21 17:56:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:10,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385252181] [2022-07-21 17:56:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 17:56:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:10,687 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 17:56:10,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:10,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385252181] [2022-07-21 17:56:10,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385252181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:10,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:10,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:10,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126378734] [2022-07-21 17:56:10,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:10,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:10,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:10,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:10,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:10,689 INFO L87 Difference]: Start difference. First operand 417 states and 537 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 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 17:56:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:10,941 INFO L93 Difference]: Finished difference Result 435 states and 556 transitions. [2022-07-21 17:56:10,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:10,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 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 51 [2022-07-21 17:56:10,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:10,943 INFO L225 Difference]: With dead ends: 435 [2022-07-21 17:56:10,943 INFO L226 Difference]: Without dead ends: 419 [2022-07-21 17:56:10,943 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 17:56:10,943 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 82 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:10,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1833 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-07-21 17:56:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 413. [2022-07-21 17:56:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 366 states have (on average 1.2568306010928962) internal successors, (460), 370 states have internal predecessors, (460), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (40), 28 states have call predecessors, (40), 27 states have call successors, (40) [2022-07-21 17:56:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 531 transitions. [2022-07-21 17:56:10,948 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 531 transitions. Word has length 51 [2022-07-21 17:56:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:10,948 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 531 transitions. [2022-07-21 17:56:10,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 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 17:56:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 531 transitions. [2022-07-21 17:56:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 17:56:10,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:10,949 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] [2022-07-21 17:56:10,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 17:56:10,949 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:10,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash -646852178, now seen corresponding path program 1 times [2022-07-21 17:56:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:10,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673532671] [2022-07-21 17:56:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:10,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:56:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:11,007 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 17:56:11,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:11,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673532671] [2022-07-21 17:56:11,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673532671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:11,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:11,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:11,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537582462] [2022-07-21 17:56:11,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:11,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:11,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:11,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:11,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:11,008 INFO L87 Difference]: Start difference. First operand 413 states and 531 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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 17:56:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:11,204 INFO L93 Difference]: Finished difference Result 431 states and 550 transitions. [2022-07-21 17:56:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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 52 [2022-07-21 17:56:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:11,206 INFO L225 Difference]: With dead ends: 431 [2022-07-21 17:56:11,206 INFO L226 Difference]: Without dead ends: 414 [2022-07-21 17:56:11,206 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 17:56:11,206 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 82 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:11,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1859 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-07-21 17:56:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2022-07-21 17:56:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 362 states have (on average 1.2569060773480663) internal successors, (455), 366 states have internal predecessors, (455), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (39), 27 states have call predecessors, (39), 26 states have call successors, (39) [2022-07-21 17:56:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 524 transitions. [2022-07-21 17:56:11,211 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 524 transitions. Word has length 52 [2022-07-21 17:56:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:11,211 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 524 transitions. [2022-07-21 17:56:11,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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 17:56:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 524 transitions. [2022-07-21 17:56:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 17:56:11,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:11,213 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] [2022-07-21 17:56:11,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 17:56:11,214 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash -403973580, now seen corresponding path program 1 times [2022-07-21 17:56:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:11,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140807182] [2022-07-21 17:56:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:11,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:11,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:56:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:11,258 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 17:56:11,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:11,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140807182] [2022-07-21 17:56:11,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140807182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:11,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:11,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:11,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523247587] [2022-07-21 17:56:11,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:11,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:11,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:11,262 INFO L87 Difference]: Start difference. First operand 408 states and 524 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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 17:56:11,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:11,509 INFO L93 Difference]: Finished difference Result 426 states and 543 transitions. [2022-07-21 17:56:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:11,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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 52 [2022-07-21 17:56:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:11,510 INFO L225 Difference]: With dead ends: 426 [2022-07-21 17:56:11,510 INFO L226 Difference]: Without dead ends: 410 [2022-07-21 17:56:11,511 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 17:56:11,511 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 82 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:11,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1749 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-07-21 17:56:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 404. [2022-07-21 17:56:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 359 states have (on average 1.256267409470752) internal successors, (451), 363 states have internal predecessors, (451), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2022-07-21 17:56:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 518 transitions. [2022-07-21 17:56:11,516 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 518 transitions. Word has length 52 [2022-07-21 17:56:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:11,516 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 518 transitions. [2022-07-21 17:56:11,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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 17:56:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 518 transitions. [2022-07-21 17:56:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 17:56:11,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:11,516 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] [2022-07-21 17:56:11,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 17:56:11,517 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash 515113277, now seen corresponding path program 1 times [2022-07-21 17:56:11,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:11,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597343970] [2022-07-21 17:56:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 17:56:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:11,564 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 17:56:11,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:11,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597343970] [2022-07-21 17:56:11,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597343970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:11,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:11,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:56:11,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72616637] [2022-07-21 17:56:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:11,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:56:11,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:11,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:56:11,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:11,566 INFO L87 Difference]: Start difference. First operand 404 states and 518 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 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 17:56:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:11,778 INFO L93 Difference]: Finished difference Result 418 states and 532 transitions. [2022-07-21 17:56:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 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 52 [2022-07-21 17:56:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:11,780 INFO L225 Difference]: With dead ends: 418 [2022-07-21 17:56:11,780 INFO L226 Difference]: Without dead ends: 388 [2022-07-21 17:56:11,780 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 17:56:11,780 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 72 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:11,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1593 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-07-21 17:56:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 382. [2022-07-21 17:56:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 338 states have (on average 1.2603550295857988) internal successors, (426), 342 states have internal predecessors, (426), 28 states have call successors, (28), 15 states have call predecessors, (28), 15 states have return successors, (37), 25 states have call predecessors, (37), 24 states have call successors, (37) [2022-07-21 17:56:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 491 transitions. [2022-07-21 17:56:11,785 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 491 transitions. Word has length 52 [2022-07-21 17:56:11,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:11,785 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 491 transitions. [2022-07-21 17:56:11,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 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 17:56:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 491 transitions. [2022-07-21 17:56:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 17:56:11,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:11,786 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] [2022-07-21 17:56:11,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-21 17:56:11,787 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1195477270, now seen corresponding path program 1 times [2022-07-21 17:56:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:11,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316011927] [2022-07-21 17:56:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:11,836 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 17:56:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:11,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316011927] [2022-07-21 17:56:11,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316011927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:11,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:11,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49099448] [2022-07-21 17:56:11,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:11,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:11,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:11,838 INFO L87 Difference]: Start difference. First operand 382 states and 491 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 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 17:56:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:12,027 INFO L93 Difference]: Finished difference Result 514 states and 678 transitions. [2022-07-21 17:56:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:12,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 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 54 [2022-07-21 17:56:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:12,030 INFO L225 Difference]: With dead ends: 514 [2022-07-21 17:56:12,030 INFO L226 Difference]: Without dead ends: 514 [2022-07-21 17:56:12,030 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 17:56:12,030 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 133 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:12,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1639 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-21 17:56:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 382. [2022-07-21 17:56:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 338 states have (on average 1.257396449704142) internal successors, (425), 342 states have internal predecessors, (425), 28 states have call successors, (28), 15 states have call predecessors, (28), 15 states have return successors, (37), 25 states have call predecessors, (37), 24 states have call successors, (37) [2022-07-21 17:56:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 490 transitions. [2022-07-21 17:56:12,035 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 490 transitions. Word has length 54 [2022-07-21 17:56:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:12,035 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 490 transitions. [2022-07-21 17:56:12,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 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 17:56:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 490 transitions. [2022-07-21 17:56:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 17:56:12,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:12,036 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] [2022-07-21 17:56:12,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 17:56:12,036 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1693203453, now seen corresponding path program 1 times [2022-07-21 17:56:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:12,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735930821] [2022-07-21 17:56:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:12,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 17:56:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,076 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 17:56:12,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:12,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735930821] [2022-07-21 17:56:12,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735930821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:12,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:12,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:12,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261836233] [2022-07-21 17:56:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:12,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:12,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:12,079 INFO L87 Difference]: Start difference. First operand 382 states and 490 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 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 17:56:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:12,307 INFO L93 Difference]: Finished difference Result 400 states and 509 transitions. [2022-07-21 17:56:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:12,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 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 56 [2022-07-21 17:56:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:12,309 INFO L225 Difference]: With dead ends: 400 [2022-07-21 17:56:12,309 INFO L226 Difference]: Without dead ends: 366 [2022-07-21 17:56:12,309 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 17:56:12,309 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 90 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:12,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1547 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-07-21 17:56:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 360. [2022-07-21 17:56:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 319 states have (on average 1.2570532915360502) internal successors, (401), 323 states have internal predecessors, (401), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (35), 23 states have call predecessors, (35), 22 states have call successors, (35) [2022-07-21 17:56:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 462 transitions. [2022-07-21 17:56:12,313 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 462 transitions. Word has length 56 [2022-07-21 17:56:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:12,313 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 462 transitions. [2022-07-21 17:56:12,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 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 17:56:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 462 transitions. [2022-07-21 17:56:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 17:56:12,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:12,314 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 17:56:12,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 17:56:12,314 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash 835021725, now seen corresponding path program 1 times [2022-07-21 17:56:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:12,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149109704] [2022-07-21 17:56:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:56:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,375 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 17:56:12,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:12,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149109704] [2022-07-21 17:56:12,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149109704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:12,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:12,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:12,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216630012] [2022-07-21 17:56:12,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:12,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:12,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:12,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:12,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:12,377 INFO L87 Difference]: Start difference. First operand 360 states and 462 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 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 17:56:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:12,541 INFO L93 Difference]: Finished difference Result 341 states and 429 transitions. [2022-07-21 17:56:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:12,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 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 62 [2022-07-21 17:56:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:12,543 INFO L225 Difference]: With dead ends: 341 [2022-07-21 17:56:12,543 INFO L226 Difference]: Without dead ends: 341 [2022-07-21 17:56:12,543 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 17:56:12,544 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 250 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:12,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 868 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-21 17:56:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 327. [2022-07-21 17:56:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 291 states have (on average 1.2577319587628866) internal successors, (366), 294 states have internal predecessors, (366), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23) [2022-07-21 17:56:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 412 transitions. [2022-07-21 17:56:12,551 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 412 transitions. Word has length 62 [2022-07-21 17:56:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:12,551 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 412 transitions. [2022-07-21 17:56:12,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 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 17:56:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 412 transitions. [2022-07-21 17:56:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 17:56:12,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:12,552 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] [2022-07-21 17:56:12,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-21 17:56:12,552 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:12,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:12,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1659041663, now seen corresponding path program 1 times [2022-07-21 17:56:12,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:12,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753381063] [2022-07-21 17:56:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:12,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:56:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,625 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 17:56:12,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:12,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753381063] [2022-07-21 17:56:12,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753381063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:12,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:12,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:56:12,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900073231] [2022-07-21 17:56:12,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:12,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:56:12,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:56:12,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:12,626 INFO L87 Difference]: Start difference. First operand 327 states and 412 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 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 17:56:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:12,878 INFO L93 Difference]: Finished difference Result 371 states and 466 transitions. [2022-07-21 17:56:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 17:56:12,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 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 66 [2022-07-21 17:56:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:12,879 INFO L225 Difference]: With dead ends: 371 [2022-07-21 17:56:12,879 INFO L226 Difference]: Without dead ends: 355 [2022-07-21 17:56:12,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-21 17:56:12,880 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 352 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:12,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1314 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-21 17:56:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-07-21 17:56:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 298 states have (on average 1.2516778523489933) internal successors, (373), 301 states have internal predecessors, (373), 23 states have call successors, (23), 13 states have call predecessors, (23), 13 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2022-07-21 17:56:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 422 transitions. [2022-07-21 17:56:12,884 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 422 transitions. Word has length 66 [2022-07-21 17:56:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:12,884 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 422 transitions. [2022-07-21 17:56:12,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 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 17:56:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 422 transitions. [2022-07-21 17:56:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 17:56:12,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:12,884 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 17:56:12,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-21 17:56:12,885 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1959206108, now seen corresponding path program 1 times [2022-07-21 17:56:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:12,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347297331] [2022-07-21 17:56:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:56:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 17:56:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:12,937 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 17:56:12,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347297331] [2022-07-21 17:56:12,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347297331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:12,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:12,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:56:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980386607] [2022-07-21 17:56:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:56:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:56:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:56:12,939 INFO L87 Difference]: Start difference. First operand 335 states and 422 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 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 17:56:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:13,256 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2022-07-21 17:56:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:13,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 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 68 [2022-07-21 17:56:13,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:13,258 INFO L225 Difference]: With dead ends: 454 [2022-07-21 17:56:13,258 INFO L226 Difference]: Without dead ends: 454 [2022-07-21 17:56:13,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:56:13,258 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 485 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:13,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1216 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:56:13,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-21 17:56:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 429. [2022-07-21 17:56:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 382 states have (on average 1.2408376963350785) internal successors, (474), 387 states have internal predecessors, (474), 25 states have call successors, (25), 19 states have call predecessors, (25), 21 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2022-07-21 17:56:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 527 transitions. [2022-07-21 17:56:13,263 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 527 transitions. Word has length 68 [2022-07-21 17:56:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:13,266 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 527 transitions. [2022-07-21 17:56:13,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 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 17:56:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 527 transitions. [2022-07-21 17:56:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 17:56:13,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:13,268 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] [2022-07-21 17:56:13,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 17:56:13,268 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 377679953, now seen corresponding path program 1 times [2022-07-21 17:56:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:13,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907902359] [2022-07-21 17:56:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:13,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:56:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 17:56:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:13,328 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 17:56:13,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:13,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907902359] [2022-07-21 17:56:13,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907902359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:13,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:13,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:56:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329181911] [2022-07-21 17:56:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:13,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:56:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:56:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:13,329 INFO L87 Difference]: Start difference. First operand 429 states and 527 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 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 17:56:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:13,572 INFO L93 Difference]: Finished difference Result 459 states and 559 transitions. [2022-07-21 17:56:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 17:56:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 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 67 [2022-07-21 17:56:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:13,574 INFO L225 Difference]: With dead ends: 459 [2022-07-21 17:56:13,574 INFO L226 Difference]: Without dead ends: 443 [2022-07-21 17:56:13,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:56:13,574 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 152 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:13,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1563 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-21 17:56:13,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 421. [2022-07-21 17:56:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 375 states have (on average 1.2426666666666666) internal successors, (466), 380 states have internal predecessors, (466), 25 states have call successors, (25), 19 states have call predecessors, (25), 20 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-21 17:56:13,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 517 transitions. [2022-07-21 17:56:13,579 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 517 transitions. Word has length 67 [2022-07-21 17:56:13,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:13,579 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 517 transitions. [2022-07-21 17:56:13,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 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 17:56:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 517 transitions. [2022-07-21 17:56:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 17:56:13,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:13,580 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] [2022-07-21 17:56:13,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-21 17:56:13,580 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:13,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2019693577, now seen corresponding path program 1 times [2022-07-21 17:56:13,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:13,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590355412] [2022-07-21 17:56:13,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:13,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 17:56:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 17:56:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 17:56:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:13,645 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 17:56:13,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:13,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590355412] [2022-07-21 17:56:13,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590355412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:13,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:13,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:56:13,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163570913] [2022-07-21 17:56:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:13,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:56:13,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:13,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:56:13,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:56:13,647 INFO L87 Difference]: Start difference. First operand 421 states and 517 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 17:56:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:14,066 INFO L93 Difference]: Finished difference Result 420 states and 515 transitions. [2022-07-21 17:56:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:56:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2022-07-21 17:56:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:14,075 INFO L225 Difference]: With dead ends: 420 [2022-07-21 17:56:14,075 INFO L226 Difference]: Without dead ends: 346 [2022-07-21 17:56:14,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-07-21 17:56:14,076 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 193 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:14,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1384 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 17:56:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-21 17:56:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2022-07-21 17:56:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 307 states have (on average 1.247557003257329) internal successors, (383), 311 states have internal predecessors, (383), 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 17:56:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 427 transitions. [2022-07-21 17:56:14,080 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 427 transitions. Word has length 69 [2022-07-21 17:56:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:14,081 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 427 transitions. [2022-07-21 17:56:14,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 17:56:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 427 transitions. [2022-07-21 17:56:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 17:56:14,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:14,082 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] [2022-07-21 17:56:14,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-21 17:56:14,082 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:14,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:14,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2013543144, now seen corresponding path program 1 times [2022-07-21 17:56:14,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:14,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107156168] [2022-07-21 17:56:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:14,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 17:56:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,142 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 17:56:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:14,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107156168] [2022-07-21 17:56:14,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107156168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:14,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:14,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480047681] [2022-07-21 17:56:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:14,143 INFO L87 Difference]: Start difference. First operand 346 states and 427 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 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 17:56:14,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:14,272 INFO L93 Difference]: Finished difference Result 398 states and 491 transitions. [2022-07-21 17:56:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:56:14,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 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 71 [2022-07-21 17:56:14,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:14,275 INFO L225 Difference]: With dead ends: 398 [2022-07-21 17:56:14,275 INFO L226 Difference]: Without dead ends: 373 [2022-07-21 17:56:14,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:56:14,275 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 106 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1087 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 17:56:14,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1087 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-21 17:56:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 357. [2022-07-21 17:56:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 317 states have (on average 1.22397476340694) internal successors, (388), 322 states have internal predecessors, (388), 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 17:56:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 433 transitions. [2022-07-21 17:56:14,280 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 433 transitions. Word has length 71 [2022-07-21 17:56:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:14,280 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 433 transitions. [2022-07-21 17:56:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 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 17:56:14,280 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 433 transitions. [2022-07-21 17:56:14,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 17:56:14,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:14,281 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] [2022-07-21 17:56:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-21 17:56:14,282 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:14,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -291513568, now seen corresponding path program 1 times [2022-07-21 17:56:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:14,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341747532] [2022-07-21 17:56:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:14,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,335 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 17:56:14,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:14,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341747532] [2022-07-21 17:56:14,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341747532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:14,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:14,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 17:56:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413710330] [2022-07-21 17:56:14,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:14,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:56:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:14,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:56:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:56:14,337 INFO L87 Difference]: Start difference. First operand 357 states and 433 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 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 17:56:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:14,433 INFO L93 Difference]: Finished difference Result 392 states and 476 transitions. [2022-07-21 17:56:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:56:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 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 74 [2022-07-21 17:56:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:14,435 INFO L225 Difference]: With dead ends: 392 [2022-07-21 17:56:14,435 INFO L226 Difference]: Without dead ends: 392 [2022-07-21 17:56:14,435 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 17:56:14,436 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 77 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1208 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 17:56:14,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1208 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:14,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-21 17:56:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 265. [2022-07-21 17:56:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 234 states have (on average 1.1794871794871795) internal successors, (276), 238 states have internal predecessors, (276), 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 17:56:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 311 transitions. [2022-07-21 17:56:14,445 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 311 transitions. Word has length 74 [2022-07-21 17:56:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:14,445 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 311 transitions. [2022-07-21 17:56:14,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 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 17:56:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 311 transitions. [2022-07-21 17:56:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 17:56:14,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:14,447 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] [2022-07-21 17:56:14,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-21 17:56:14,447 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1369005511, now seen corresponding path program 1 times [2022-07-21 17:56:14,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:14,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972588553] [2022-07-21 17:56:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 17:56:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 17:56:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,506 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 17:56:14,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:14,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972588553] [2022-07-21 17:56:14,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972588553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:14,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:14,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100751470] [2022-07-21 17:56:14,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:14,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:14,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:14,508 INFO L87 Difference]: Start difference. First operand 265 states and 311 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 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 17:56:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:14,734 INFO L93 Difference]: Finished difference Result 494 states and 579 transitions. [2022-07-21 17:56:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:56:14,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 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 77 [2022-07-21 17:56:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:14,735 INFO L225 Difference]: With dead ends: 494 [2022-07-21 17:56:14,735 INFO L226 Difference]: Without dead ends: 444 [2022-07-21 17:56:14,735 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 17:56:14,735 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 370 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:14,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1259 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-21 17:56:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 191. [2022-07-21 17:56:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 171 states have (on average 1.1578947368421053) internal successors, (198), 173 states have internal predecessors, (198), 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 17:56:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 217 transitions. [2022-07-21 17:56:14,740 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 217 transitions. Word has length 77 [2022-07-21 17:56:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:14,740 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 217 transitions. [2022-07-21 17:56:14,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 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 17:56:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 217 transitions. [2022-07-21 17:56:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 17:56:14,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:14,741 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, 1, 1, 1] [2022-07-21 17:56:14,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-21 17:56:14,741 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:14,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash 586260984, now seen corresponding path program 1 times [2022-07-21 17:56:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:14,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851971464] [2022-07-21 17:56:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 17:56:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,776 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 17:56:14,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:14,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851971464] [2022-07-21 17:56:14,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851971464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:14,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:14,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201177722] [2022-07-21 17:56:14,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:14,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:14,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:14,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:14,778 INFO L87 Difference]: Start difference. First operand 191 states and 217 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, (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 17:56:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:14,858 INFO L93 Difference]: Finished difference Result 199 states and 225 transitions. [2022-07-21 17:56:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:14,858 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, (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 83 [2022-07-21 17:56:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:14,859 INFO L225 Difference]: With dead ends: 199 [2022-07-21 17:56:14,859 INFO L226 Difference]: Without dead ends: 197 [2022-07-21 17:56:14,859 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 17:56:14,859 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 25 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:14,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 605 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-21 17:56:14,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2022-07-21 17:56:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 171 states have (on average 1.152046783625731) internal successors, (197), 173 states have internal predecessors, (197), 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 17:56:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 216 transitions. [2022-07-21 17:56:14,861 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 216 transitions. Word has length 83 [2022-07-21 17:56:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:14,861 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 216 transitions. [2022-07-21 17:56:14,861 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, (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 17:56:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 216 transitions. [2022-07-21 17:56:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 17:56:14,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:14,862 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] [2022-07-21 17:56:14,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-21 17:56:14,862 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash 727590310, now seen corresponding path program 1 times [2022-07-21 17:56:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:14,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238700444] [2022-07-21 17:56:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 17:56:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:14,909 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 17:56:14,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:14,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238700444] [2022-07-21 17:56:14,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238700444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:14,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:14,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:14,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275579886] [2022-07-21 17:56:14,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:14,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:14,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:14,911 INFO L87 Difference]: Start difference. First operand 191 states and 216 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 17:56:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:14,974 INFO L93 Difference]: Finished difference Result 221 states and 250 transitions. [2022-07-21 17:56:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:14,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 103 [2022-07-21 17:56:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:14,975 INFO L225 Difference]: With dead ends: 221 [2022-07-21 17:56:14,975 INFO L226 Difference]: Without dead ends: 221 [2022-07-21 17:56:14,975 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 17:56:14,976 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 67 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:14,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 570 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-21 17:56:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 193. [2022-07-21 17:56:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 173 states have (on average 1.1502890173410405) internal successors, (199), 175 states have internal predecessors, (199), 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 17:56:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 218 transitions. [2022-07-21 17:56:14,978 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 218 transitions. Word has length 103 [2022-07-21 17:56:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:14,978 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 218 transitions. [2022-07-21 17:56:14,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 17:56:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 218 transitions. [2022-07-21 17:56:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 17:56:14,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:14,979 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] [2022-07-21 17:56:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-21 17:56:14,979 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1604320614, now seen corresponding path program 1 times [2022-07-21 17:56:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:14,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989680119] [2022-07-21 17:56:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:14,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 17:56:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,050 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 17:56:15,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:15,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989680119] [2022-07-21 17:56:15,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989680119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:15,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:15,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 17:56:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797449285] [2022-07-21 17:56:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:15,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:56:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:56:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:56:15,051 INFO L87 Difference]: Start difference. First operand 193 states and 218 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 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 17:56:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:15,209 INFO L93 Difference]: Finished difference Result 230 states and 261 transitions. [2022-07-21 17:56:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:15,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 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 103 [2022-07-21 17:56:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:15,210 INFO L225 Difference]: With dead ends: 230 [2022-07-21 17:56:15,210 INFO L226 Difference]: Without dead ends: 197 [2022-07-21 17:56:15,210 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 17:56:15,210 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 303 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:15,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 831 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-21 17:56:15,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2022-07-21 17:56:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 173 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 17:56:15,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2022-07-21 17:56:15,212 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 103 [2022-07-21 17:56:15,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:15,212 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2022-07-21 17:56:15,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 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 17:56:15,213 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2022-07-21 17:56:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 17:56:15,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:15,213 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] [2022-07-21 17:56:15,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-21 17:56:15,213 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:15,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash -247821256, now seen corresponding path program 1 times [2022-07-21 17:56:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:15,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975530037] [2022-07-21 17:56:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:15,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 17:56:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,337 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 17:56:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:15,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975530037] [2022-07-21 17:56:15,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975530037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:15,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:15,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:56:15,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139261536] [2022-07-21 17:56:15,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:15,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:56:15,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:15,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:56:15,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:56:15,338 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 11 states have internal predecessors, (88), 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 17:56:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:15,635 INFO L93 Difference]: Finished difference Result 296 states and 340 transitions. [2022-07-21 17:56:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 17:56:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 11 states have internal predecessors, (88), 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 104 [2022-07-21 17:56:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:15,636 INFO L225 Difference]: With dead ends: 296 [2022-07-21 17:56:15,636 INFO L226 Difference]: Without dead ends: 265 [2022-07-21 17:56:15,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-07-21 17:56:15,637 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 459 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:15,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1533 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-07-21 17:56:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 206. [2022-07-21 17:56:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 185 states have (on average 1.145945945945946) internal successors, (212), 187 states have internal predecessors, (212), 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 17:56:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 232 transitions. [2022-07-21 17:56:15,641 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 232 transitions. Word has length 104 [2022-07-21 17:56:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:15,641 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 232 transitions. [2022-07-21 17:56:15,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 11 states have internal predecessors, (88), 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 17:56:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 232 transitions. [2022-07-21 17:56:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 17:56:15,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:15,642 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, 1, 1, 1] [2022-07-21 17:56:15,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-21 17:56:15,642 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2004323598, now seen corresponding path program 1 times [2022-07-21 17:56:15,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:15,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500750632] [2022-07-21 17:56:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:15,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 17:56:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,734 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 17:56:15,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:15,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500750632] [2022-07-21 17:56:15,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500750632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:15,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:15,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 17:56:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704033489] [2022-07-21 17:56:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 17:56:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 17:56:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:56:15,736 INFO L87 Difference]: Start difference. First operand 206 states and 232 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 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 17:56:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:15,910 INFO L93 Difference]: Finished difference Result 223 states and 251 transitions. [2022-07-21 17:56:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:56:15,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 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 105 [2022-07-21 17:56:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:15,911 INFO L225 Difference]: With dead ends: 223 [2022-07-21 17:56:15,911 INFO L226 Difference]: Without dead ends: 220 [2022-07-21 17:56:15,911 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 17:56:15,911 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 30 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:15,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1686 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-21 17:56:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 206. [2022-07-21 17:56:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 185 states have (on average 1.1405405405405404) internal successors, (211), 187 states have internal predecessors, (211), 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 17:56:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 231 transitions. [2022-07-21 17:56:15,913 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 231 transitions. Word has length 105 [2022-07-21 17:56:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:15,914 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 231 transitions. [2022-07-21 17:56:15,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 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 17:56:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 231 transitions. [2022-07-21 17:56:15,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 17:56:15,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:15,914 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] [2022-07-21 17:56:15,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-21 17:56:15,914 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:15,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash -629299870, now seen corresponding path program 1 times [2022-07-21 17:56:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802179680] [2022-07-21 17:56:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:15,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 17:56:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:15,962 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 17:56:15,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:15,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802179680] [2022-07-21 17:56:15,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802179680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:15,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:15,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:56:15,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559987878] [2022-07-21 17:56:15,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:15,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:56:15,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:56:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:56:15,964 INFO L87 Difference]: Start difference. First operand 206 states and 231 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 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 17:56:16,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:16,028 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2022-07-21 17:56:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:56:16,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 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 108 [2022-07-21 17:56:16,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:16,029 INFO L225 Difference]: With dead ends: 207 [2022-07-21 17:56:16,029 INFO L226 Difference]: Without dead ends: 198 [2022-07-21 17:56:16,030 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 17:56:16,030 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 149 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:16,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 384 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-21 17:56:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 184. [2022-07-21 17:56:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 164 states have (on average 1.1219512195121952) internal successors, (184), 166 states have internal predecessors, (184), 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 17:56:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 203 transitions. [2022-07-21 17:56:16,032 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 203 transitions. Word has length 108 [2022-07-21 17:56:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:16,032 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 203 transitions. [2022-07-21 17:56:16,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 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 17:56:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 203 transitions. [2022-07-21 17:56:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 17:56:16,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:16,033 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, 1, 1, 1] [2022-07-21 17:56:16,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-21 17:56:16,034 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:16,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:16,034 INFO L85 PathProgramCache]: Analyzing trace with hash 809951383, now seen corresponding path program 1 times [2022-07-21 17:56:16,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:16,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635077800] [2022-07-21 17:56:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:16,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 17:56:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 17:56:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,091 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 17:56:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:16,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635077800] [2022-07-21 17:56:16,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635077800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:16,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:16,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:16,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473980166] [2022-07-21 17:56:16,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:16,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:16,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:16,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:16,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:16,093 INFO L87 Difference]: Start difference. First operand 184 states and 203 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 5 states have internal predecessors, (96), 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 17:56:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:16,179 INFO L93 Difference]: Finished difference Result 173 states and 189 transitions. [2022-07-21 17:56:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:56:16,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 5 states have internal predecessors, (96), 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 114 [2022-07-21 17:56:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:16,180 INFO L225 Difference]: With dead ends: 173 [2022-07-21 17:56:16,180 INFO L226 Difference]: Without dead ends: 163 [2022-07-21 17:56:16,180 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 17:56:16,180 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 66 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 668 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 17:56:16,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 668 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-07-21 17:56:16,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-07-21 17:56:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 147 states have internal predecessors, (162), 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 17:56:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 178 transitions. [2022-07-21 17:56:16,182 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 178 transitions. Word has length 114 [2022-07-21 17:56:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:16,182 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 178 transitions. [2022-07-21 17:56:16,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 5 states have internal predecessors, (96), 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 17:56:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 178 transitions. [2022-07-21 17:56:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 17:56:16,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:16,183 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, 1, 1, 1] [2022-07-21 17:56:16,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-21 17:56:16,184 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:16,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1384297966, now seen corresponding path program 1 times [2022-07-21 17:56:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:16,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809923056] [2022-07-21 17:56:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 17:56:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 17:56:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,246 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 17:56:16,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:16,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809923056] [2022-07-21 17:56:16,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809923056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:16,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:16,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:56:16,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471437886] [2022-07-21 17:56:16,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:16,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:56:16,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:56:16,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:56:16,247 INFO L87 Difference]: Start difference. First operand 163 states and 178 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 6 states have internal predecessors, (94), 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 17:56:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:16,433 INFO L93 Difference]: Finished difference Result 284 states and 309 transitions. [2022-07-21 17:56:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:56:16,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 6 states have internal predecessors, (94), 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 115 [2022-07-21 17:56:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:16,434 INFO L225 Difference]: With dead ends: 284 [2022-07-21 17:56:16,434 INFO L226 Difference]: Without dead ends: 163 [2022-07-21 17:56:16,434 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 17:56:16,434 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 130 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:16,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 902 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:56:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-07-21 17:56:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-07-21 17:56:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 146 states have (on average 1.1027397260273972) internal successors, (161), 147 states have internal predecessors, (161), 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 17:56:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 177 transitions. [2022-07-21 17:56:16,436 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 177 transitions. Word has length 115 [2022-07-21 17:56:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:16,437 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 177 transitions. [2022-07-21 17:56:16,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 6 states have internal predecessors, (94), 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 17:56:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 177 transitions. [2022-07-21 17:56:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 17:56:16,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:56:16,447 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, 1, 1, 1] [2022-07-21 17:56:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-21 17:56:16,448 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-21 17:56:16,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:56:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1263306388, now seen corresponding path program 1 times [2022-07-21 17:56:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:56:16,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700984135] [2022-07-21 17:56:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:56:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:56:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 17:56:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 17:56:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 17:56:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 17:56:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:56:16,537 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 17:56:16,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:56:16,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700984135] [2022-07-21 17:56:16,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700984135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:56:16,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:56:16,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 17:56:16,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209635116] [2022-07-21 17:56:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:56:16,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 17:56:16,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:56:16,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 17:56:16,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:56:16,538 INFO L87 Difference]: Start difference. First operand 163 states and 177 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 10 states have internal predecessors, (94), 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 17:56:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:56:16,798 INFO L93 Difference]: Finished difference Result 173 states and 190 transitions. [2022-07-21 17:56:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:56:16,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 10 states have internal predecessors, (94), 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 115 [2022-07-21 17:56:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:56:16,799 INFO L225 Difference]: With dead ends: 173 [2022-07-21 17:56:16,799 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 17:56:16,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2022-07-21 17:56:16,799 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 379 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:56:16,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 817 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:56:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 17:56:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 17:56:16,800 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 17:56:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 17:56:16,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2022-07-21 17:56:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:56:16,800 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 17:56:16,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 10 states have internal predecessors, (94), 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 17:56:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 17:56:16,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 17:56:16,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-07-21 17:56:16,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-07-21 17:56:16,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-21 17:56:16,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:56:16,805 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 17:56:16,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:56:16 BoogieIcfgContainer [2022-07-21 17:56:16,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 17:56:16,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 17:56:16,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 17:56:16,807 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 17:56:16,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:56:01" (3/4) ... [2022-07-21 17:56:16,809 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 17:56:16,812 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2022-07-21 17:56:16,812 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2022-07-21 17:56:16,812 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2022-07-21 17:56:16,812 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2022-07-21 17:56:16,813 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2022-07-21 17:56:16,813 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlQueueIrpToThread [2022-07-21 17:56:16,813 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyCreateClose [2022-07-21 17:56:16,828 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2022-07-21 17:56:16,829 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2022-07-21 17:56:16,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-21 17:56:16,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-07-21 17:56:16,903 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 17:56:16,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 17:56:16,903 INFO L158 Benchmark]: Toolchain (without parser) took 16895.40ms. Allocated memory was 67.1MB in the beginning and 255.9MB in the end (delta: 188.7MB). Free memory was 45.6MB in the beginning and 138.4MB in the end (delta: -92.8MB). Peak memory consumption was 94.2MB. Max. memory is 16.1GB. [2022-07-21 17:56:16,903 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 48.5MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:56:16,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.51ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 36.7MB in the end (delta: 8.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-21 17:56:16,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.92ms. Allocated memory is still 67.1MB. Free memory was 36.5MB in the beginning and 46.1MB in the end (delta: -9.6MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-07-21 17:56:16,904 INFO L158 Benchmark]: Boogie Preprocessor took 56.67ms. Allocated memory is still 67.1MB. Free memory was 46.1MB in the beginning and 42.2MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 17:56:16,904 INFO L158 Benchmark]: RCFGBuilder took 854.83ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 42.2MB in the beginning and 58.8MB in the end (delta: -16.6MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-07-21 17:56:16,904 INFO L158 Benchmark]: TraceAbstraction took 15385.19ms. Allocated memory was 86.0MB in the beginning and 255.9MB in the end (delta: 169.9MB). Free memory was 58.3MB in the beginning and 157.3MB in the end (delta: -98.9MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2022-07-21 17:56:16,904 INFO L158 Benchmark]: Witness Printer took 96.34ms. Allocated memory is still 255.9MB. Free memory was 157.3MB in the beginning and 138.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-21 17:56:16,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 48.5MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.51ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 36.7MB in the end (delta: 8.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.92ms. Allocated memory is still 67.1MB. Free memory was 36.5MB in the beginning and 46.1MB in the end (delta: -9.6MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.67ms. Allocated memory is still 67.1MB. Free memory was 46.1MB in the beginning and 42.2MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 854.83ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 42.2MB in the beginning and 58.8MB in the end (delta: -16.6MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * TraceAbstraction took 15385.19ms. Allocated memory was 86.0MB in the beginning and 255.9MB in the end (delta: 169.9MB). Free memory was 58.3MB in the beginning and 157.3MB in the end (delta: -98.9MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. * Witness Printer took 96.34ms. Allocated memory is still 255.9MB. Free memory was 157.3MB in the beginning and 138.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. 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: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 667]: 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 8 procedures, 319 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 15.3s, OverallIterations: 61, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14076 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13763 mSDsluCounter, 74282 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53738 mSDsCounter, 2229 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18592 IncrementalHoareTripleChecker+Invalid, 20821 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2229 mSolverCounterUnsat, 20544 mSDtfsCounter, 18592 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 730 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 462 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=707occurred in iteration=21, InterpolantAutomatonStates: 454, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 61 MinimizatonAttempts, 1608 StatesRemovedByMinimization, 55 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 3167 NumberOfCodeBlocks, 3167 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 3106 ConstructedInterpolants, 0 QuantifiedInterpolants, 6999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 61 InterpolantComputations, 61 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 17:56:16,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE