./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 06:32:24,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:32:24,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:32:24,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:32:24,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:32:24,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:32:24,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:32:24,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:32:24,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:32:24,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:32:24,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:32:24,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:32:24,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:32:24,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:32:24,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:32:24,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:32:24,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:32:24,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:32:24,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:32:24,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:32:24,097 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:32:24,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:32:24,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:32:24,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:32:24,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:32:24,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:32:24,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:32:24,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:32:24,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:32:24,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:32:24,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:32:24,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:32:24,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:32:24,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:32:24,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:32:24,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:32:24,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:32:24,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:32:24,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:32:24,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:32:24,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:32:24,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:32:24,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 06:32:24,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:32:24,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:32:24,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:32:24,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:32:24,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:32:24,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:32:24,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:32:24,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:32:24,152 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:32:24,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:32:24,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:32:24,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:32:24,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:32:24,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:32:24,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:32:24,154 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:32:24,154 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:32:24,154 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:32:24,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:32:24,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:32:24,155 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:32:24,156 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:32:24,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:32:24,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:32:24,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:32:24,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:32:24,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:32:24,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:32:24,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 06:32:24,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 06:32:24,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa [2022-07-20 06:32:24,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:32:24,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:32:24,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:32:24,435 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:32:24,435 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:32:24,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2022-07-20 06:32:24,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e8da446/ee1344e0e4334a6fa48f9a16fef3d490/FLAGb579f22d5 [2022-07-20 06:32:24,984 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:32:24,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2022-07-20 06:32:25,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e8da446/ee1344e0e4334a6fa48f9a16fef3d490/FLAGb579f22d5 [2022-07-20 06:32:25,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e8da446/ee1344e0e4334a6fa48f9a16fef3d490 [2022-07-20 06:32:25,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:32:25,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:32:25,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:32:25,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:32:25,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:32:25,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:25,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a095cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25, skipping insertion in model container [2022-07-20 06:32:25,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:25,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:32:25,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:32:25,712 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2022-07-20 06:32:25,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:32:25,797 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 06:32:25,809 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2022-07-20 06:32:25,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:32:25,883 INFO L208 MainTranslator]: Completed translation [2022-07-20 06:32:25,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25 WrapperNode [2022-07-20 06:32:25,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:32:25,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 06:32:25,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 06:32:25,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 06:32:25,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:25,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:25,954 INFO L137 Inliner]: procedures = 38, calls = 62, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 916 [2022-07-20 06:32:25,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 06:32:25,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 06:32:25,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 06:32:25,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 06:32:25,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:25,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:25,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:25,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:25,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:26,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:26,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:26,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 06:32:26,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 06:32:26,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 06:32:26,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 06:32:26,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (1/1) ... [2022-07-20 06:32:26,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:32:26,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:32:26,069 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) [2022-07-20 06:32:26,094 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 [2022-07-20 06:32:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 06:32:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-20 06:32:26,117 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-20 06:32:26,117 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-07-20 06:32:26,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-07-20 06:32:26,117 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-07-20 06:32:26,117 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-07-20 06:32:26,118 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-20 06:32:26,118 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-20 06:32:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 06:32:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-20 06:32:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-20 06:32:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 06:32:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 06:32:26,310 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 06:32:26,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 06:32:26,338 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,409 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-07-20 06:32:26,409 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-07-20 06:32:26,410 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,419 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-20 06:32:26,420 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-20 06:32:26,430 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,434 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,446 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,457 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,459 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,470 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,472 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,473 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,480 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:26,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume !false; [2022-07-20 06:32:26,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume false; [2022-07-20 06:32:26,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !false; [2022-07-20 06:32:26,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume false; [2022-07-20 06:32:26,966 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2022-07-20 06:32:26,966 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2022-07-20 06:32:26,966 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2022-07-20 06:32:26,966 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2022-07-20 06:32:26,966 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume !false; [2022-07-20 06:32:26,966 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume false; [2022-07-20 06:32:26,967 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-07-20 06:32:26,967 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-07-20 06:32:26,967 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2022-07-20 06:32:26,967 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2022-07-20 06:32:26,968 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume !false; [2022-07-20 06:32:26,968 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##118: assume false; [2022-07-20 06:32:26,968 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume false; [2022-07-20 06:32:26,968 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume !false; [2022-07-20 06:32:26,974 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:32:27,013 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-07-20 06:32:27,013 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-07-20 06:32:27,023 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 06:32:27,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 06:32:27,034 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 06:32:27,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:32:27 BoogieIcfgContainer [2022-07-20 06:32:27,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 06:32:27,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 06:32:27,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 06:32:27,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 06:32:27,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:32:25" (1/3) ... [2022-07-20 06:32:27,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6054a184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:32:27, skipping insertion in model container [2022-07-20 06:32:27,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:32:25" (2/3) ... [2022-07-20 06:32:27,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6054a184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:32:27, skipping insertion in model container [2022-07-20 06:32:27,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:32:27" (3/3) ... [2022-07-20 06:32:27,047 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2022-07-20 06:32:27,058 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 06:32:27,059 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-20 06:32:27,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 06:32:27,123 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@88ff0a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6679ab0 [2022-07-20 06:32:27,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-20 06:32:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-20 06:32:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-20 06:32:27,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:27,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:27,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash -379437591, now seen corresponding path program 1 times [2022-07-20 06:32:27,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:27,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386107749] [2022-07-20 06:32:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:27,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:27,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386107749] [2022-07-20 06:32:27,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386107749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:27,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:27,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:32:27,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644892064] [2022-07-20 06:32:27,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:27,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:32:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:32:27,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:27,372 INFO L87 Difference]: Start difference. First operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:27,435 INFO L93 Difference]: Finished difference Result 237 states and 338 transitions. [2022-07-20 06:32:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:32:27,437 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 [2022-07-20 06:32:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:27,446 INFO L225 Difference]: With dead ends: 237 [2022-07-20 06:32:27,446 INFO L226 Difference]: Without dead ends: 235 [2022-07-20 06:32:27,448 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 [2022-07-20 06:32:27,450 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 194 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:27,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:32:27,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-07-20 06:32:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2022-07-20 06:32:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 211 states have internal predecessors, (279), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-20 06:32:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 335 transitions. [2022-07-20 06:32:27,497 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 335 transitions. Word has length 8 [2022-07-20 06:32:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:27,497 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 335 transitions. [2022-07-20 06:32:27,497 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) [2022-07-20 06:32:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 335 transitions. [2022-07-20 06:32:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-20 06:32:27,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:27,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:27,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 06:32:27,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:27,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash 229440230, now seen corresponding path program 1 times [2022-07-20 06:32:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:27,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538210733] [2022-07-20 06:32:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:27,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:27,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538210733] [2022-07-20 06:32:27,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538210733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:27,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:27,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:32:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496618509] [2022-07-20 06:32:27,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:32:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:32:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:27,600 INFO L87 Difference]: Start difference. First operand 234 states and 335 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:27,679 INFO L93 Difference]: Finished difference Result 233 states and 334 transitions. [2022-07-20 06:32:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:32:27,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-20 06:32:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:27,681 INFO L225 Difference]: With dead ends: 233 [2022-07-20 06:32:27,684 INFO L226 Difference]: Without dead ends: 229 [2022-07-20 06:32:27,684 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 [2022-07-20 06:32:27,686 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 214 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:27,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 392 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:27,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-20 06:32:27,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-07-20 06:32:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 206 states have internal predecessors, (266), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-20 06:32:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2022-07-20 06:32:27,711 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 11 [2022-07-20 06:32:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:27,712 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2022-07-20 06:32:27,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2022-07-20 06:32:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 06:32:27,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:27,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:27,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 06:32:27,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:27,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:27,714 INFO L85 PathProgramCache]: Analyzing trace with hash 23733269, now seen corresponding path program 1 times [2022-07-20 06:32:27,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:27,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402704129] [2022-07-20 06:32:27,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:27,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:27,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:27,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402704129] [2022-07-20 06:32:27,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402704129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:27,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:27,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:32:27,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378162883] [2022-07-20 06:32:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:27,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:32:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:27,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:32:27,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:27,792 INFO L87 Difference]: Start difference. First operand 229 states and 322 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:27,893 INFO L93 Difference]: Finished difference Result 344 states and 482 transitions. [2022-07-20 06:32:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:32:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-20 06:32:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:27,897 INFO L225 Difference]: With dead ends: 344 [2022-07-20 06:32:27,898 INFO L226 Difference]: Without dead ends: 343 [2022-07-20 06:32:27,898 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 [2022-07-20 06:32:27,904 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 251 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:27,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 583 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-20 06:32:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 326. [2022-07-20 06:32:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 285 states have internal predecessors, (383), 37 states have call successors, (37), 9 states have call predecessors, (37), 7 states have return successors, (40), 32 states have call predecessors, (40), 27 states have call successors, (40) [2022-07-20 06:32:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 460 transitions. [2022-07-20 06:32:27,922 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 460 transitions. Word has length 18 [2022-07-20 06:32:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:27,923 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 460 transitions. [2022-07-20 06:32:27,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 460 transitions. [2022-07-20 06:32:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-20 06:32:27,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:27,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:27,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 06:32:27,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:27,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:27,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1035240094, now seen corresponding path program 1 times [2022-07-20 06:32:27,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:27,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313532324] [2022-07-20 06:32:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:27,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:27,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313532324] [2022-07-20 06:32:27,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313532324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:27,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:27,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:32:27,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107039712] [2022-07-20 06:32:27,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:27,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:32:27,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:27,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:32:27,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:27,980 INFO L87 Difference]: Start difference. First operand 326 states and 460 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:28,000 INFO L93 Difference]: Finished difference Result 512 states and 717 transitions. [2022-07-20 06:32:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:32:28,001 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 [2022-07-20 06:32:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:28,004 INFO L225 Difference]: With dead ends: 512 [2022-07-20 06:32:28,004 INFO L226 Difference]: Without dead ends: 512 [2022-07-20 06:32:28,004 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 [2022-07-20 06:32:28,005 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 273 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:28,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 479 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:32:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-20 06:32:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2022-07-20 06:32:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 423 states have (on average 1.3617021276595744) internal successors, (576), 424 states have internal predecessors, (576), 47 states have call successors, (47), 17 states have call predecessors, (47), 14 states have return successors, (61), 44 states have call predecessors, (61), 39 states have call successors, (61) [2022-07-20 06:32:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 684 transitions. [2022-07-20 06:32:28,024 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 684 transitions. Word has length 19 [2022-07-20 06:32:28,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:28,025 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 684 transitions. [2022-07-20 06:32:28,025 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) [2022-07-20 06:32:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 684 transitions. [2022-07-20 06:32:28,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-20 06:32:28,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:28,026 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] [2022-07-20 06:32:28,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 06:32:28,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1224032788, now seen corresponding path program 1 times [2022-07-20 06:32:28,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:28,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452290220] [2022-07-20 06:32:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:28,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:28,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:28,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452290220] [2022-07-20 06:32:28,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452290220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:28,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:28,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:32:28,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646181204] [2022-07-20 06:32:28,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:28,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:32:28,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:28,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:32:28,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:28,077 INFO L87 Difference]: Start difference. First operand 485 states and 684 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:28,099 INFO L93 Difference]: Finished difference Result 556 states and 772 transitions. [2022-07-20 06:32:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:32:28,100 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 [2022-07-20 06:32:28,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:28,103 INFO L225 Difference]: With dead ends: 556 [2022-07-20 06:32:28,103 INFO L226 Difference]: Without dead ends: 556 [2022-07-20 06:32:28,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:28,104 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 277 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:28,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 384 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:32:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-07-20 06:32:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 523. [2022-07-20 06:32:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 455 states have (on average 1.3604395604395605) internal successors, (619), 462 states have internal predecessors, (619), 49 states have call successors, (49), 20 states have call predecessors, (49), 18 states have return successors, (65), 42 states have call predecessors, (65), 42 states have call successors, (65) [2022-07-20 06:32:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 733 transitions. [2022-07-20 06:32:28,129 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 733 transitions. Word has length 22 [2022-07-20 06:32:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:28,130 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 733 transitions. [2022-07-20 06:32:28,130 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) [2022-07-20 06:32:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 733 transitions. [2022-07-20 06:32:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 06:32:28,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:28,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:28,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 06:32:28,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:28,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash -222747689, now seen corresponding path program 1 times [2022-07-20 06:32:28,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:28,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328735672] [2022-07-20 06:32:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:28,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:28,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:28,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328735672] [2022-07-20 06:32:28,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328735672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:28,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:28,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:32:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626189722] [2022-07-20 06:32:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:32:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:32:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:28,193 INFO L87 Difference]: Start difference. First operand 523 states and 733 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:28,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:28,264 INFO L93 Difference]: Finished difference Result 803 states and 1126 transitions. [2022-07-20 06:32:28,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:32:28,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-20 06:32:28,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:28,269 INFO L225 Difference]: With dead ends: 803 [2022-07-20 06:32:28,269 INFO L226 Difference]: Without dead ends: 803 [2022-07-20 06:32:28,269 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 [2022-07-20 06:32:28,270 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 120 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:28,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 662 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-07-20 06:32:28,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 614. [2022-07-20 06:32:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 540 states have (on average 1.3685185185185185) internal successors, (739), 550 states have internal predecessors, (739), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-20 06:32:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 862 transitions. [2022-07-20 06:32:28,289 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 862 transitions. Word has length 27 [2022-07-20 06:32:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:28,290 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 862 transitions. [2022-07-20 06:32:28,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 862 transitions. [2022-07-20 06:32:28,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-20 06:32:28,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:28,291 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] [2022-07-20 06:32:28,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 06:32:28,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:28,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:28,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1446649383, now seen corresponding path program 1 times [2022-07-20 06:32:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:28,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775735728] [2022-07-20 06:32:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:28,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:28,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:28,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775735728] [2022-07-20 06:32:28,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775735728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:28,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:28,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:32:28,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472196675] [2022-07-20 06:32:28,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:28,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:32:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:28,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:32:28,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:32:28,369 INFO L87 Difference]: Start difference. First operand 614 states and 862 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:28,599 INFO L93 Difference]: Finished difference Result 639 states and 882 transitions. [2022-07-20 06:32:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:32:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-20 06:32:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:28,603 INFO L225 Difference]: With dead ends: 639 [2022-07-20 06:32:28,603 INFO L226 Difference]: Without dead ends: 639 [2022-07-20 06:32:28,603 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 [2022-07-20 06:32:28,604 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 513 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:28,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 527 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-20 06:32:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 605. [2022-07-20 06:32:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 531 states have (on average 1.3521657250470809) internal successors, (718), 541 states have internal predecessors, (718), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-20 06:32:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 841 transitions. [2022-07-20 06:32:28,627 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 841 transitions. Word has length 28 [2022-07-20 06:32:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:28,629 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 841 transitions. [2022-07-20 06:32:28,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 841 transitions. [2022-07-20 06:32:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 06:32:28,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:28,631 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] [2022-07-20 06:32:28,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 06:32:28,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash -266296252, now seen corresponding path program 1 times [2022-07-20 06:32:28,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:28,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981304571] [2022-07-20 06:32:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 06:32:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:28,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:28,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981304571] [2022-07-20 06:32:28,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981304571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:28,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:28,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:32:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050562183] [2022-07-20 06:32:28,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:28,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:32:28,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:32:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:32:28,680 INFO L87 Difference]: Start difference. First operand 605 states and 841 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:28,794 INFO L93 Difference]: Finished difference Result 645 states and 893 transitions. [2022-07-20 06:32:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:32:28,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-07-20 06:32:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:28,797 INFO L225 Difference]: With dead ends: 645 [2022-07-20 06:32:28,798 INFO L226 Difference]: Without dead ends: 645 [2022-07-20 06:32:28,798 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 [2022-07-20 06:32:28,799 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 64 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:28,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 735 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-07-20 06:32:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 626. [2022-07-20 06:32:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 552 states have (on average 1.3496376811594204) internal successors, (745), 561 states have internal predecessors, (745), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-20 06:32:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 868 transitions. [2022-07-20 06:32:28,814 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 868 transitions. Word has length 29 [2022-07-20 06:32:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:28,814 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 868 transitions. [2022-07-20 06:32:28,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 868 transitions. [2022-07-20 06:32:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-20 06:32:28,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:28,816 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] [2022-07-20 06:32:28,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 06:32:28,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash 786936120, now seen corresponding path program 1 times [2022-07-20 06:32:28,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:28,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400397249] [2022-07-20 06:32:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:28,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 06:32:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:28,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:28,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400397249] [2022-07-20 06:32:28,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400397249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:28,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:28,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63324697] [2022-07-20 06:32:28,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:28,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:28,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:28,896 INFO L87 Difference]: Start difference. First operand 626 states and 868 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:29,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:29,085 INFO L93 Difference]: Finished difference Result 645 states and 892 transitions. [2022-07-20 06:32:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:32:29,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-20 06:32:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:29,090 INFO L225 Difference]: With dead ends: 645 [2022-07-20 06:32:29,090 INFO L226 Difference]: Without dead ends: 645 [2022-07-20 06:32:29,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:29,091 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 393 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:29,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 701 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-07-20 06:32:29,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 626. [2022-07-20 06:32:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 552 states have (on average 1.3478260869565217) internal successors, (744), 561 states have internal predecessors, (744), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-20 06:32:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 867 transitions. [2022-07-20 06:32:29,118 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 867 transitions. Word has length 30 [2022-07-20 06:32:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:29,118 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 867 transitions. [2022-07-20 06:32:29,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 867 transitions. [2022-07-20 06:32:29,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-20 06:32:29,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:29,120 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] [2022-07-20 06:32:29,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 06:32:29,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1995000776, now seen corresponding path program 1 times [2022-07-20 06:32:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:29,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37621054] [2022-07-20 06:32:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:29,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:29,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37621054] [2022-07-20 06:32:29,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37621054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:29,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:29,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:32:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93536944] [2022-07-20 06:32:29,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:29,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:32:29,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:29,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:32:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:29,149 INFO L87 Difference]: Start difference. First operand 626 states and 867 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:29,197 INFO L93 Difference]: Finished difference Result 638 states and 883 transitions. [2022-07-20 06:32:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:32:29,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-20 06:32:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:29,200 INFO L225 Difference]: With dead ends: 638 [2022-07-20 06:32:29,201 INFO L226 Difference]: Without dead ends: 638 [2022-07-20 06:32:29,201 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 [2022-07-20 06:32:29,201 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 16 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:29,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 547 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:32:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-07-20 06:32:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 637. [2022-07-20 06:32:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 563 states have (on average 1.3463587921847247) internal successors, (758), 571 states have internal predecessors, (758), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-20 06:32:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 881 transitions. [2022-07-20 06:32:29,215 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 881 transitions. Word has length 30 [2022-07-20 06:32:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:29,215 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 881 transitions. [2022-07-20 06:32:29,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 881 transitions. [2022-07-20 06:32:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 06:32:29,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:29,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:29,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 06:32:29,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:29,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2060099377, now seen corresponding path program 1 times [2022-07-20 06:32:29,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:29,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193345870] [2022-07-20 06:32:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:29,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:29,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 06:32:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:29,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193345870] [2022-07-20 06:32:29,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193345870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:29,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:29,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:29,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232023327] [2022-07-20 06:32:29,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:29,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:29,285 INFO L87 Difference]: Start difference. First operand 637 states and 881 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:29,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:29,496 INFO L93 Difference]: Finished difference Result 656 states and 905 transitions. [2022-07-20 06:32:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:32:29,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-07-20 06:32:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:29,499 INFO L225 Difference]: With dead ends: 656 [2022-07-20 06:32:29,499 INFO L226 Difference]: Without dead ends: 656 [2022-07-20 06:32:29,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:29,500 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 374 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:29,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 911 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-20 06:32:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 637. [2022-07-20 06:32:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 563 states have (on average 1.344582593250444) internal successors, (757), 571 states have internal predecessors, (757), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2022-07-20 06:32:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 880 transitions. [2022-07-20 06:32:29,514 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 880 transitions. Word has length 31 [2022-07-20 06:32:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:29,515 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 880 transitions. [2022-07-20 06:32:29,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 880 transitions. [2022-07-20 06:32:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-20 06:32:29,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:29,517 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] [2022-07-20 06:32:29,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 06:32:29,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash -477345279, now seen corresponding path program 1 times [2022-07-20 06:32:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:29,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074412410] [2022-07-20 06:32:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:29,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:29,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 06:32:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:29,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074412410] [2022-07-20 06:32:29,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074412410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:29,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:29,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:32:29,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184192261] [2022-07-20 06:32:29,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:29,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:32:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:32:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:32:29,572 INFO L87 Difference]: Start difference. First operand 637 states and 880 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:29,671 INFO L93 Difference]: Finished difference Result 665 states and 914 transitions. [2022-07-20 06:32:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:32:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-07-20 06:32:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:29,675 INFO L225 Difference]: With dead ends: 665 [2022-07-20 06:32:29,675 INFO L226 Difference]: Without dead ends: 652 [2022-07-20 06:32:29,676 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 [2022-07-20 06:32:29,676 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 52 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:29,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1069 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-07-20 06:32:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 635. [2022-07-20 06:32:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 562 states have (on average 1.3434163701067616) internal successors, (755), 570 states have internal predecessors, (755), 50 states have call successors, (50), 23 states have call predecessors, (50), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2022-07-20 06:32:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 876 transitions. [2022-07-20 06:32:29,692 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 876 transitions. Word has length 32 [2022-07-20 06:32:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:29,692 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 876 transitions. [2022-07-20 06:32:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 876 transitions. [2022-07-20 06:32:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-20 06:32:29,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:29,694 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] [2022-07-20 06:32:29,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 06:32:29,694 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:29,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1919528188, now seen corresponding path program 1 times [2022-07-20 06:32:29,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:29,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260797257] [2022-07-20 06:32:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:29,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:29,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:29,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260797257] [2022-07-20 06:32:29,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260797257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:29,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:29,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:32:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774950355] [2022-07-20 06:32:29,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:29,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:32:29,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:32:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:32:29,742 INFO L87 Difference]: Start difference. First operand 635 states and 876 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:29,786 INFO L93 Difference]: Finished difference Result 643 states and 887 transitions. [2022-07-20 06:32:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:32:29,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-20 06:32:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:29,789 INFO L225 Difference]: With dead ends: 643 [2022-07-20 06:32:29,789 INFO L226 Difference]: Without dead ends: 643 [2022-07-20 06:32:29,790 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 [2022-07-20 06:32:29,790 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 5 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:29,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 558 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:32:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-07-20 06:32:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2022-07-20 06:32:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 570 states have (on average 1.343859649122807) internal successors, (766), 578 states have internal predecessors, (766), 50 states have call successors, (50), 23 states have call predecessors, (50), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2022-07-20 06:32:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 887 transitions. [2022-07-20 06:32:29,812 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 887 transitions. Word has length 34 [2022-07-20 06:32:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:29,813 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 887 transitions. [2022-07-20 06:32:29,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:32:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 887 transitions. [2022-07-20 06:32:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-20 06:32:29,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:29,814 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] [2022-07-20 06:32:29,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 06:32:29,819 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:29,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:29,820 INFO L85 PathProgramCache]: Analyzing trace with hash 197237323, now seen corresponding path program 1 times [2022-07-20 06:32:29,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:29,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143575689] [2022-07-20 06:32:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:29,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:29,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:29,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143575689] [2022-07-20 06:32:29,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143575689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:29,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:29,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:32:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757050673] [2022-07-20 06:32:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:29,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:32:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:29,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:32:29,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:32:29,892 INFO L87 Difference]: Start difference. First operand 643 states and 887 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:30,094 INFO L93 Difference]: Finished difference Result 468 states and 616 transitions. [2022-07-20 06:32:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:32:30,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-07-20 06:32:30,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:30,097 INFO L225 Difference]: With dead ends: 468 [2022-07-20 06:32:30,097 INFO L226 Difference]: Without dead ends: 468 [2022-07-20 06:32:30,098 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 [2022-07-20 06:32:30,098 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 382 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:30,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 824 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-07-20 06:32:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 427. [2022-07-20 06:32:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 375 states have (on average 1.312) internal successors, (492), 383 states have internal predecessors, (492), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-20 06:32:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 566 transitions. [2022-07-20 06:32:30,110 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 566 transitions. Word has length 38 [2022-07-20 06:32:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:30,111 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 566 transitions. [2022-07-20 06:32:30,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 566 transitions. [2022-07-20 06:32:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 06:32:30,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:30,119 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] [2022-07-20 06:32:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 06:32:30,119 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1089851695, now seen corresponding path program 1 times [2022-07-20 06:32:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801438783] [2022-07-20 06:32:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:30,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:30,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801438783] [2022-07-20 06:32:30,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801438783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:30,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:30,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:32:30,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638619617] [2022-07-20 06:32:30,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 06:32:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 06:32:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:32:30,241 INFO L87 Difference]: Start difference. First operand 427 states and 566 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:30,433 INFO L93 Difference]: Finished difference Result 422 states and 554 transitions. [2022-07-20 06:32:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:32:30,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-20 06:32:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:30,436 INFO L225 Difference]: With dead ends: 422 [2022-07-20 06:32:30,436 INFO L226 Difference]: Without dead ends: 422 [2022-07-20 06:32:30,438 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 [2022-07-20 06:32:30,439 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 74 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:30,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1575 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-20 06:32:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 410. [2022-07-20 06:32:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 359 states have (on average 1.3008356545961002) internal successors, (467), 366 states have internal predecessors, (467), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-20 06:32:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 540 transitions. [2022-07-20 06:32:30,450 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 540 transitions. Word has length 41 [2022-07-20 06:32:30,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:30,450 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 540 transitions. [2022-07-20 06:32:30,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 540 transitions. [2022-07-20 06:32:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-20 06:32:30,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:30,451 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] [2022-07-20 06:32:30,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 06:32:30,452 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:30,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:30,452 INFO L85 PathProgramCache]: Analyzing trace with hash 738484898, now seen corresponding path program 1 times [2022-07-20 06:32:30,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:30,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432289387] [2022-07-20 06:32:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:30,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:32:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:30,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:30,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432289387] [2022-07-20 06:32:30,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432289387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:30,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:30,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:32:30,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377111798] [2022-07-20 06:32:30,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:30,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 06:32:30,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:30,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 06:32:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:32:30,512 INFO L87 Difference]: Start difference. First operand 410 states and 540 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:30,821 INFO L93 Difference]: Finished difference Result 447 states and 582 transitions. [2022-07-20 06:32:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 06:32:30,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-20 06:32:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:30,824 INFO L225 Difference]: With dead ends: 447 [2022-07-20 06:32:30,824 INFO L226 Difference]: Without dead ends: 447 [2022-07-20 06:32:30,824 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 [2022-07-20 06:32:30,825 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 357 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:30,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1128 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-07-20 06:32:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 410. [2022-07-20 06:32:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 359 states have (on average 1.2952646239554317) internal successors, (465), 366 states have internal predecessors, (465), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-20 06:32:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 538 transitions. [2022-07-20 06:32:30,835 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 538 transitions. Word has length 40 [2022-07-20 06:32:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:30,835 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 538 transitions. [2022-07-20 06:32:30,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 538 transitions. [2022-07-20 06:32:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 06:32:30,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:30,836 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] [2022-07-20 06:32:30,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 06:32:30,837 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:30,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1982956471, now seen corresponding path program 1 times [2022-07-20 06:32:30,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:30,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26477014] [2022-07-20 06:32:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:30,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-20 06:32:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:30,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:30,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26477014] [2022-07-20 06:32:30,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26477014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:30,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:30,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:30,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257833511] [2022-07-20 06:32:30,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:30,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:30,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:30,887 INFO L87 Difference]: Start difference. First operand 410 states and 538 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:31,049 INFO L93 Difference]: Finished difference Result 436 states and 566 transitions. [2022-07-20 06:32:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:32:31,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-20 06:32:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:31,055 INFO L225 Difference]: With dead ends: 436 [2022-07-20 06:32:31,055 INFO L226 Difference]: Without dead ends: 404 [2022-07-20 06:32:31,055 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 [2022-07-20 06:32:31,057 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 74 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:31,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1314 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:31,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-20 06:32:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2022-07-20 06:32:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 351 states have internal predecessors, (446), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (37), 27 states have call predecessors, (37), 26 states have call successors, (37) [2022-07-20 06:32:31,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 515 transitions. [2022-07-20 06:32:31,068 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 515 transitions. Word has length 41 [2022-07-20 06:32:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:31,068 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 515 transitions. [2022-07-20 06:32:31,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 515 transitions. [2022-07-20 06:32:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 06:32:31,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:31,070 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] [2022-07-20 06:32:31,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 06:32:31,070 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:31,071 INFO L85 PathProgramCache]: Analyzing trace with hash -13657420, now seen corresponding path program 1 times [2022-07-20 06:32:31,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:31,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903133604] [2022-07-20 06:32:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:31,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:31,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:31,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903133604] [2022-07-20 06:32:31,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903133604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:31,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:31,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620728717] [2022-07-20 06:32:31,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:31,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:31,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:31,154 INFO L87 Difference]: Start difference. First operand 392 states and 515 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:31,401 INFO L93 Difference]: Finished difference Result 404 states and 528 transitions. [2022-07-20 06:32:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:32:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-07-20 06:32:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:31,403 INFO L225 Difference]: With dead ends: 404 [2022-07-20 06:32:31,403 INFO L226 Difference]: Without dead ends: 404 [2022-07-20 06:32:31,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 06:32:31,404 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 315 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:31,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 899 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:31,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-20 06:32:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2022-07-20 06:32:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 345 states have (on average 1.289855072463768) internal successors, (445), 351 states have internal predecessors, (445), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (37), 27 states have call predecessors, (37), 26 states have call successors, (37) [2022-07-20 06:32:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 514 transitions. [2022-07-20 06:32:31,412 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 514 transitions. Word has length 43 [2022-07-20 06:32:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:31,413 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 514 transitions. [2022-07-20 06:32:31,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 514 transitions. [2022-07-20 06:32:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-20 06:32:31,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:31,414 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] [2022-07-20 06:32:31,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 06:32:31,414 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1480101209, now seen corresponding path program 1 times [2022-07-20 06:32:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:31,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347439072] [2022-07-20 06:32:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:31,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:32:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:31,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:31,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347439072] [2022-07-20 06:32:31,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347439072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:31,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:31,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:31,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023321796] [2022-07-20 06:32:31,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:31,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:31,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:31,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:31,501 INFO L87 Difference]: Start difference. First operand 392 states and 514 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:31,733 INFO L93 Difference]: Finished difference Result 411 states and 538 transitions. [2022-07-20 06:32:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:32:31,733 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 [2022-07-20 06:32:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:31,735 INFO L225 Difference]: With dead ends: 411 [2022-07-20 06:32:31,735 INFO L226 Difference]: Without dead ends: 411 [2022-07-20 06:32:31,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-07-20 06:32:31,736 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 334 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:31,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 902 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-07-20 06:32:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 384. [2022-07-20 06:32:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 338 states have (on average 1.2810650887573964) internal successors, (433), 344 states have internal predecessors, (433), 32 states have call successors, (32), 14 states have call predecessors, (32), 13 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2022-07-20 06:32:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 501 transitions. [2022-07-20 06:32:31,745 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 501 transitions. Word has length 42 [2022-07-20 06:32:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:31,745 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 501 transitions. [2022-07-20 06:32:31,745 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) [2022-07-20 06:32:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 501 transitions. [2022-07-20 06:32:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-20 06:32:31,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:31,747 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] [2022-07-20 06:32:31,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 06:32:31,747 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:31,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2093894745, now seen corresponding path program 1 times [2022-07-20 06:32:31,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:31,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922569417] [2022-07-20 06:32:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:31,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:32:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:31,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:31,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922569417] [2022-07-20 06:32:31,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922569417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:31,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:31,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:32:31,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375277685] [2022-07-20 06:32:31,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:31,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:32:31,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:32:31,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:32:31,782 INFO L87 Difference]: Start difference. First operand 384 states and 501 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:31,914 INFO L93 Difference]: Finished difference Result 397 states and 512 transitions. [2022-07-20 06:32:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:32:31,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-20 06:32:31,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:31,917 INFO L225 Difference]: With dead ends: 397 [2022-07-20 06:32:31,917 INFO L226 Difference]: Without dead ends: 397 [2022-07-20 06:32:31,917 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 [2022-07-20 06:32:31,918 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 80 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:31,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 687 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-07-20 06:32:31,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 381. [2022-07-20 06:32:31,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 336 states have (on average 1.2738095238095237) internal successors, (428), 341 states have internal predecessors, (428), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2022-07-20 06:32:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 495 transitions. [2022-07-20 06:32:31,926 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 495 transitions. Word has length 42 [2022-07-20 06:32:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:31,926 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 495 transitions. [2022-07-20 06:32:31,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 495 transitions. [2022-07-20 06:32:31,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 06:32:31,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:31,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:31,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 06:32:31,928 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:31,929 INFO L85 PathProgramCache]: Analyzing trace with hash -34042315, now seen corresponding path program 1 times [2022-07-20 06:32:31,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:31,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291795855] [2022-07-20 06:32:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:31,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:32:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:31,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291795855] [2022-07-20 06:32:31,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291795855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:31,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:31,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 06:32:31,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765912681] [2022-07-20 06:32:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:31,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 06:32:31,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:31,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 06:32:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:32:31,989 INFO L87 Difference]: Start difference. First operand 381 states and 495 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:32,209 INFO L93 Difference]: Finished difference Result 423 states and 547 transitions. [2022-07-20 06:32:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 06:32:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-07-20 06:32:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:32,211 INFO L225 Difference]: With dead ends: 423 [2022-07-20 06:32:32,211 INFO L226 Difference]: Without dead ends: 422 [2022-07-20 06:32:32,211 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 [2022-07-20 06:32:32,211 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 227 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:32,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1530 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-20 06:32:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 396. [2022-07-20 06:32:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 350 states have (on average 1.262857142857143) internal successors, (442), 355 states have internal predecessors, (442), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (42), 27 states have call predecessors, (42), 26 states have call successors, (42) [2022-07-20 06:32:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 515 transitions. [2022-07-20 06:32:32,220 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 515 transitions. Word has length 43 [2022-07-20 06:32:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:32,220 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 515 transitions. [2022-07-20 06:32:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 515 transitions. [2022-07-20 06:32:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 06:32:32,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:32,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:32,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 06:32:32,222 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash -33765485, now seen corresponding path program 1 times [2022-07-20 06:32:32,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:32,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119601102] [2022-07-20 06:32:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:32,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:32:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:32,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:32,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119601102] [2022-07-20 06:32:32,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119601102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:32,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:32,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 06:32:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020396916] [2022-07-20 06:32:32,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:32,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 06:32:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 06:32:32,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:32:32,277 INFO L87 Difference]: Start difference. First operand 396 states and 515 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:32,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:32,519 INFO L93 Difference]: Finished difference Result 419 states and 540 transitions. [2022-07-20 06:32:32,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 06:32:32,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-07-20 06:32:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:32,522 INFO L225 Difference]: With dead ends: 419 [2022-07-20 06:32:32,522 INFO L226 Difference]: Without dead ends: 409 [2022-07-20 06:32:32,523 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 [2022-07-20 06:32:32,525 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 49 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:32,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1649 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-20 06:32:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 393. [2022-07-20 06:32:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 347 states have (on average 1.2651296829971181) internal successors, (439), 353 states have internal predecessors, (439), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (41), 26 states have call predecessors, (41), 26 states have call successors, (41) [2022-07-20 06:32:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 511 transitions. [2022-07-20 06:32:32,535 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 511 transitions. Word has length 43 [2022-07-20 06:32:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:32,535 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 511 transitions. [2022-07-20 06:32:32,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 511 transitions. [2022-07-20 06:32:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-20 06:32:32,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:32,537 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] [2022-07-20 06:32:32,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-20 06:32:32,538 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1181888463, now seen corresponding path program 1 times [2022-07-20 06:32:32,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:32,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786691949] [2022-07-20 06:32:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:32,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 06:32:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:32,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786691949] [2022-07-20 06:32:32,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786691949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:32,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:32,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844247951] [2022-07-20 06:32:32,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:32,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:32,601 INFO L87 Difference]: Start difference. First operand 393 states and 511 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:32,843 INFO L93 Difference]: Finished difference Result 409 states and 526 transitions. [2022-07-20 06:32:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:32:32,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-20 06:32:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:32,846 INFO L225 Difference]: With dead ends: 409 [2022-07-20 06:32:32,846 INFO L226 Difference]: Without dead ends: 397 [2022-07-20 06:32:32,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-20 06:32:32,847 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 384 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:32,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 837 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-07-20 06:32:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 377. [2022-07-20 06:32:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 333 states have (on average 1.2702702702702702) internal successors, (423), 338 states have internal predecessors, (423), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2022-07-20 06:32:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 488 transitions. [2022-07-20 06:32:32,856 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 488 transitions. Word has length 44 [2022-07-20 06:32:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:32,856 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 488 transitions. [2022-07-20 06:32:32,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 488 transitions. [2022-07-20 06:32:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-20 06:32:32,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:32,857 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] [2022-07-20 06:32:32,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 06:32:32,858 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:32,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:32,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1424622961, now seen corresponding path program 1 times [2022-07-20 06:32:32,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:32,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690692444] [2022-07-20 06:32:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:32,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:32,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:32,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690692444] [2022-07-20 06:32:32,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690692444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:32,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:32,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:32:32,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217718208] [2022-07-20 06:32:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:32,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:32:32,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:32:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:32:32,910 INFO L87 Difference]: Start difference. First operand 377 states and 488 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:33,034 INFO L93 Difference]: Finished difference Result 468 states and 599 transitions. [2022-07-20 06:32:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 06:32:33,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-07-20 06:32:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:33,037 INFO L225 Difference]: With dead ends: 468 [2022-07-20 06:32:33,037 INFO L226 Difference]: Without dead ends: 468 [2022-07-20 06:32:33,037 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 [2022-07-20 06:32:33,038 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 160 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:33,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 747 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-07-20 06:32:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 430. [2022-07-20 06:32:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 381 states have (on average 1.2703412073490814) internal successors, (484), 385 states have internal predecessors, (484), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2022-07-20 06:32:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 557 transitions. [2022-07-20 06:32:33,048 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 557 transitions. Word has length 46 [2022-07-20 06:32:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:33,048 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 557 transitions. [2022-07-20 06:32:33,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 557 transitions. [2022-07-20 06:32:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 06:32:33,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:33,050 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] [2022-07-20 06:32:33,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 06:32:33,050 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1973534822, now seen corresponding path program 1 times [2022-07-20 06:32:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:33,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151196896] [2022-07-20 06:32:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:32:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:33,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:33,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151196896] [2022-07-20 06:32:33,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151196896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:33,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:33,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:32:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896883092] [2022-07-20 06:32:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:33,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 06:32:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 06:32:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:32:33,123 INFO L87 Difference]: Start difference. First operand 430 states and 557 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:33,313 INFO L93 Difference]: Finished difference Result 471 states and 604 transitions. [2022-07-20 06:32:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:32:33,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-07-20 06:32:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:33,315 INFO L225 Difference]: With dead ends: 471 [2022-07-20 06:32:33,315 INFO L226 Difference]: Without dead ends: 471 [2022-07-20 06:32:33,316 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 [2022-07-20 06:32:33,316 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 52 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:33,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1610 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-07-20 06:32:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 430. [2022-07-20 06:32:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 381 states have (on average 1.2650918635170603) internal successors, (482), 385 states have internal predecessors, (482), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2022-07-20 06:32:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 555 transitions. [2022-07-20 06:32:33,335 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 555 transitions. Word has length 48 [2022-07-20 06:32:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:33,336 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 555 transitions. [2022-07-20 06:32:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 555 transitions. [2022-07-20 06:32:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 06:32:33,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:33,337 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] [2022-07-20 06:32:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 06:32:33,338 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1518352747, now seen corresponding path program 1 times [2022-07-20 06:32:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:33,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617330222] [2022-07-20 06:32:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:33,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-20 06:32:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:33,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617330222] [2022-07-20 06:32:33,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617330222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:33,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:33,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546092925] [2022-07-20 06:32:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:33,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:33,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:33,406 INFO L87 Difference]: Start difference. First operand 430 states and 555 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:33,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:33,645 INFO L93 Difference]: Finished difference Result 454 states and 581 transitions. [2022-07-20 06:32:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:33,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-07-20 06:32:33,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:33,647 INFO L225 Difference]: With dead ends: 454 [2022-07-20 06:32:33,647 INFO L226 Difference]: Without dead ends: 438 [2022-07-20 06:32:33,647 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 [2022-07-20 06:32:33,647 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 53 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:33,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1844 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-20 06:32:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 426. [2022-07-20 06:32:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 378 states have (on average 1.2645502645502646) internal successors, (478), 382 states have internal predecessors, (478), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (40), 28 states have call predecessors, (40), 27 states have call successors, (40) [2022-07-20 06:32:33,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 549 transitions. [2022-07-20 06:32:33,656 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 549 transitions. Word has length 48 [2022-07-20 06:32:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:33,656 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 549 transitions. [2022-07-20 06:32:33,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 549 transitions. [2022-07-20 06:32:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-20 06:32:33,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:33,657 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] [2022-07-20 06:32:33,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-20 06:32:33,657 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:33,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash 882823039, now seen corresponding path program 1 times [2022-07-20 06:32:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:33,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868064455] [2022-07-20 06:32:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:33,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:32:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868064455] [2022-07-20 06:32:33,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868064455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:33,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:33,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604524515] [2022-07-20 06:32:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:33,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:33,722 INFO L87 Difference]: Start difference. First operand 426 states and 549 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:33,971 INFO L93 Difference]: Finished difference Result 450 states and 575 transitions. [2022-07-20 06:32:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:33,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-20 06:32:33,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:33,974 INFO L225 Difference]: With dead ends: 450 [2022-07-20 06:32:33,974 INFO L226 Difference]: Without dead ends: 433 [2022-07-20 06:32:33,974 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 [2022-07-20 06:32:33,975 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 53 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:33,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1806 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-20 06:32:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 421. [2022-07-20 06:32:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 374 states have (on average 1.2647058823529411) internal successors, (473), 378 states have internal predecessors, (473), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (39), 27 states have call predecessors, (39), 26 states have call successors, (39) [2022-07-20 06:32:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 542 transitions. [2022-07-20 06:32:33,983 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 542 transitions. Word has length 49 [2022-07-20 06:32:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:33,983 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 542 transitions. [2022-07-20 06:32:33,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:33,984 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 542 transitions. [2022-07-20 06:32:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-20 06:32:33,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:33,985 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] [2022-07-20 06:32:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 06:32:33,985 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash 163830842, now seen corresponding path program 1 times [2022-07-20 06:32:33,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:33,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099195147] [2022-07-20 06:32:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:32:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:34,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:34,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099195147] [2022-07-20 06:32:34,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099195147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:34,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:34,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055446975] [2022-07-20 06:32:34,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:34,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:34,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:34,044 INFO L87 Difference]: Start difference. First operand 421 states and 542 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:34,275 INFO L93 Difference]: Finished difference Result 445 states and 568 transitions. [2022-07-20 06:32:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:34,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-20 06:32:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:34,278 INFO L225 Difference]: With dead ends: 445 [2022-07-20 06:32:34,278 INFO L226 Difference]: Without dead ends: 429 [2022-07-20 06:32:34,278 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 [2022-07-20 06:32:34,279 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 53 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:34,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1760 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-20 06:32:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2022-07-20 06:32:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 371 states have (on average 1.2641509433962264) internal successors, (469), 375 states have internal predecessors, (469), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2022-07-20 06:32:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 536 transitions. [2022-07-20 06:32:34,289 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 536 transitions. Word has length 49 [2022-07-20 06:32:34,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:34,289 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 536 transitions. [2022-07-20 06:32:34,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 536 transitions. [2022-07-20 06:32:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-20 06:32:34,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:34,291 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] [2022-07-20 06:32:34,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-20 06:32:34,292 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:34,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash -48892372, now seen corresponding path program 1 times [2022-07-20 06:32:34,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:34,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705423194] [2022-07-20 06:32:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:34,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:34,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:34,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705423194] [2022-07-20 06:32:34,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705423194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:34,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:34,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:32:34,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007041846] [2022-07-20 06:32:34,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:34,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 06:32:34,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 06:32:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:32:34,384 INFO L87 Difference]: Start difference. First operand 417 states and 536 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:34,573 INFO L93 Difference]: Finished difference Result 561 states and 736 transitions. [2022-07-20 06:32:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:32:34,574 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 [2022-07-20 06:32:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:34,576 INFO L225 Difference]: With dead ends: 561 [2022-07-20 06:32:34,576 INFO L226 Difference]: Without dead ends: 561 [2022-07-20 06:32:34,577 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 [2022-07-20 06:32:34,580 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 104 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:34,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1794 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:34,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-20 06:32:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 417. [2022-07-20 06:32:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 371 states have (on average 1.261455525606469) internal successors, (468), 375 states have internal predecessors, (468), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2022-07-20 06:32:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 535 transitions. [2022-07-20 06:32:34,590 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 535 transitions. Word has length 51 [2022-07-20 06:32:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:34,590 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 535 transitions. [2022-07-20 06:32:34,591 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) [2022-07-20 06:32:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 535 transitions. [2022-07-20 06:32:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 06:32:34,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:34,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:34,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-20 06:32:34,592 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1190154103, now seen corresponding path program 1 times [2022-07-20 06:32:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:34,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640870455] [2022-07-20 06:32:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:34,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 06:32:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:34,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:34,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640870455] [2022-07-20 06:32:34,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640870455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:34,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:34,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:34,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181028341] [2022-07-20 06:32:34,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:34,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:34,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:34,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:34,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:34,673 INFO L87 Difference]: Start difference. First operand 417 states and 535 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:34,897 INFO L93 Difference]: Finished difference Result 441 states and 561 transitions. [2022-07-20 06:32:34,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:34,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-07-20 06:32:34,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:34,905 INFO L225 Difference]: With dead ends: 441 [2022-07-20 06:32:34,905 INFO L226 Difference]: Without dead ends: 407 [2022-07-20 06:32:34,906 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 [2022-07-20 06:32:34,906 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 61 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:34,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1764 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-20 06:32:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 395. [2022-07-20 06:32:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 352 states have (on average 1.2613636363636365) internal successors, (444), 356 states have internal predecessors, (444), 27 states have call successors, (27), 15 states have call predecessors, (27), 15 states have return successors, (36), 24 states have call predecessors, (36), 23 states have call successors, (36) [2022-07-20 06:32:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 507 transitions. [2022-07-20 06:32:34,917 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 507 transitions. Word has length 53 [2022-07-20 06:32:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:34,917 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 507 transitions. [2022-07-20 06:32:34,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 06:32:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 507 transitions. [2022-07-20 06:32:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-20 06:32:34,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:34,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:34,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-20 06:32:34,919 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1140585270, now seen corresponding path program 1 times [2022-07-20 06:32:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191704576] [2022-07-20 06:32:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:32:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:34,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:34,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191704576] [2022-07-20 06:32:34,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191704576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:34,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:34,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:32:34,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943825231] [2022-07-20 06:32:34,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:34,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 06:32:34,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 06:32:34,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:32:34,992 INFO L87 Difference]: Start difference. First operand 395 states and 507 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:35,195 INFO L93 Difference]: Finished difference Result 382 states and 481 transitions. [2022-07-20 06:32:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:32:35,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2022-07-20 06:32:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:35,197 INFO L225 Difference]: With dead ends: 382 [2022-07-20 06:32:35,197 INFO L226 Difference]: Without dead ends: 382 [2022-07-20 06:32:35,198 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 [2022-07-20 06:32:35,199 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 132 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:35,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1169 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-20 06:32:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 362. [2022-07-20 06:32:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 324 states have (on average 1.2623456790123457) internal successors, (409), 327 states have internal predecessors, (409), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2022-07-20 06:32:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 457 transitions. [2022-07-20 06:32:35,226 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 457 transitions. Word has length 59 [2022-07-20 06:32:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:35,227 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 457 transitions. [2022-07-20 06:32:35,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 457 transitions. [2022-07-20 06:32:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-20 06:32:35,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:35,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:35,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-20 06:32:35,228 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:35,228 INFO L85 PathProgramCache]: Analyzing trace with hash 731705651, now seen corresponding path program 1 times [2022-07-20 06:32:35,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:35,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774726923] [2022-07-20 06:32:35,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:35,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-20 06:32:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:35,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-20 06:32:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:35,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:35,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774726923] [2022-07-20 06:32:35,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774726923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:35,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:35,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:35,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747509249] [2022-07-20 06:32:35,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:35,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:35,302 INFO L87 Difference]: Start difference. First operand 362 states and 457 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:35,682 INFO L93 Difference]: Finished difference Result 487 states and 595 transitions. [2022-07-20 06:32:35,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 06:32:35,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-07-20 06:32:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:35,685 INFO L225 Difference]: With dead ends: 487 [2022-07-20 06:32:35,685 INFO L226 Difference]: Without dead ends: 487 [2022-07-20 06:32:35,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-07-20 06:32:35,685 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 355 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:35,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1373 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:32:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-07-20 06:32:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 456. [2022-07-20 06:32:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 408 states have (on average 1.2475490196078431) internal successors, (509), 413 states have internal predecessors, (509), 26 states have call successors, (26), 20 states have call predecessors, (26), 21 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2022-07-20 06:32:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 562 transitions. [2022-07-20 06:32:35,697 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 562 transitions. Word has length 61 [2022-07-20 06:32:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:35,698 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 562 transitions. [2022-07-20 06:32:35,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 562 transitions. [2022-07-20 06:32:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-20 06:32:35,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:35,699 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] [2022-07-20 06:32:35,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-20 06:32:35,700 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:35,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1386771644, now seen corresponding path program 1 times [2022-07-20 06:32:35,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:35,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723429481] [2022-07-20 06:32:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:35,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:35,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-20 06:32:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:35,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-20 06:32:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:35,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723429481] [2022-07-20 06:32:35,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723429481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:35,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:35,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 06:32:35,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512172633] [2022-07-20 06:32:35,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:35,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 06:32:35,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:35,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 06:32:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-20 06:32:35,774 INFO L87 Difference]: Start difference. First operand 456 states and 562 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 06:32:36,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:36,054 INFO L93 Difference]: Finished difference Result 455 states and 560 transitions. [2022-07-20 06:32:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:36,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2022-07-20 06:32:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:36,056 INFO L225 Difference]: With dead ends: 455 [2022-07-20 06:32:36,056 INFO L226 Difference]: Without dead ends: 343 [2022-07-20 06:32:36,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-20 06:32:36,057 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 97 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:36,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1606 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-20 06:32:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-07-20 06:32:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 304 states have (on average 1.2532894736842106) internal successors, (381), 308 states have internal predecessors, (381), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2022-07-20 06:32:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 425 transitions. [2022-07-20 06:32:36,062 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 425 transitions. Word has length 62 [2022-07-20 06:32:36,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:36,062 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 425 transitions. [2022-07-20 06:32:36,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 06:32:36,063 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 425 transitions. [2022-07-20 06:32:36,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 06:32:36,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:36,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-20 06:32:36,064 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:36,064 INFO L85 PathProgramCache]: Analyzing trace with hash -643436666, now seen corresponding path program 1 times [2022-07-20 06:32:36,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:36,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983706885] [2022-07-20 06:32:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:32:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:36,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983706885] [2022-07-20 06:32:36,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983706885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:36,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:36,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 06:32:36,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899000936] [2022-07-20 06:32:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:36,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 06:32:36,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 06:32:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-20 06:32:36,172 INFO L87 Difference]: Start difference. First operand 343 states and 425 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:36,384 INFO L93 Difference]: Finished difference Result 375 states and 461 transitions. [2022-07-20 06:32:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2022-07-20 06:32:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:36,386 INFO L225 Difference]: With dead ends: 375 [2022-07-20 06:32:36,386 INFO L226 Difference]: Without dead ends: 359 [2022-07-20 06:32:36,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-20 06:32:36,387 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 246 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:36,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 990 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-20 06:32:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 351. [2022-07-20 06:32:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 311 states have (on average 1.247588424437299) internal successors, (388), 315 states have internal predecessors, (388), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 19 states have call successors, (25) [2022-07-20 06:32:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 434 transitions. [2022-07-20 06:32:36,394 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 434 transitions. Word has length 63 [2022-07-20 06:32:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:36,395 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 434 transitions. [2022-07-20 06:32:36,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 434 transitions. [2022-07-20 06:32:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-20 06:32:36,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:36,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:36,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-20 06:32:36,396 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:36,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash -164766848, now seen corresponding path program 1 times [2022-07-20 06:32:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:36,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948529290] [2022-07-20 06:32:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:32:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-20 06:32:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948529290] [2022-07-20 06:32:36,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948529290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:36,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:36,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 06:32:36,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902450636] [2022-07-20 06:32:36,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:36,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 06:32:36,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 06:32:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-20 06:32:36,479 INFO L87 Difference]: Start difference. First operand 351 states and 434 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:36,664 INFO L93 Difference]: Finished difference Result 375 states and 460 transitions. [2022-07-20 06:32:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2022-07-20 06:32:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:36,666 INFO L225 Difference]: With dead ends: 375 [2022-07-20 06:32:36,666 INFO L226 Difference]: Without dead ends: 359 [2022-07-20 06:32:36,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-20 06:32:36,667 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 71 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:36,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1259 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-20 06:32:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 343. [2022-07-20 06:32:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 304 states have (on average 1.25) internal successors, (380), 308 states have internal predecessors, (380), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2022-07-20 06:32:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 424 transitions. [2022-07-20 06:32:36,676 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 424 transitions. Word has length 64 [2022-07-20 06:32:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:36,676 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 424 transitions. [2022-07-20 06:32:36,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 424 transitions. [2022-07-20 06:32:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-20 06:32:36,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:36,678 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] [2022-07-20 06:32:36,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-20 06:32:36,678 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash 955115294, now seen corresponding path program 1 times [2022-07-20 06:32:36,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:36,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604194831] [2022-07-20 06:32:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-20 06:32:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:36,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604194831] [2022-07-20 06:32:36,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604194831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:36,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:36,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:36,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778020460] [2022-07-20 06:32:36,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:36,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:36,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:36,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:36,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:36,764 INFO L87 Difference]: Start difference. First operand 343 states and 424 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:36,956 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2022-07-20 06:32:36,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 06:32:36,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2022-07-20 06:32:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:36,958 INFO L225 Difference]: With dead ends: 395 [2022-07-20 06:32:36,959 INFO L226 Difference]: Without dead ends: 370 [2022-07-20 06:32:36,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-20 06:32:36,959 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 85 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:36,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1133 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-07-20 06:32:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 354. [2022-07-20 06:32:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 314 states have (on average 1.2261146496815287) internal successors, (385), 319 states have internal predecessors, (385), 22 states have call successors, (22), 16 states have call predecessors, (22), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2022-07-20 06:32:36,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 430 transitions. [2022-07-20 06:32:36,966 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 430 transitions. Word has length 68 [2022-07-20 06:32:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:36,966 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 430 transitions. [2022-07-20 06:32:36,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 430 transitions. [2022-07-20 06:32:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-20 06:32:36,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:36,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:36,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-20 06:32:36,969 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:36,970 INFO L85 PathProgramCache]: Analyzing trace with hash 162641819, now seen corresponding path program 1 times [2022-07-20 06:32:36,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:36,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827818154] [2022-07-20 06:32:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-20 06:32:37,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:37,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827818154] [2022-07-20 06:32:37,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827818154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:37,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:37,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 06:32:37,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286945625] [2022-07-20 06:32:37,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:37,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 06:32:37,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 06:32:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 06:32:37,064 INFO L87 Difference]: Start difference. First operand 354 states and 430 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 06:32:37,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:37,195 INFO L93 Difference]: Finished difference Result 389 states and 473 transitions. [2022-07-20 06:32:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:32:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2022-07-20 06:32:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:37,197 INFO L225 Difference]: With dead ends: 389 [2022-07-20 06:32:37,197 INFO L226 Difference]: Without dead ends: 389 [2022-07-20 06:32:37,197 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 [2022-07-20 06:32:37,198 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 77 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:37,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1148 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-07-20 06:32:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 262. [2022-07-20 06:32:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 231 states have (on average 1.1818181818181819) internal successors, (273), 235 states have internal predecessors, (273), 16 states have call successors, (16), 12 states have call predecessors, (16), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-07-20 06:32:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 308 transitions. [2022-07-20 06:32:37,203 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 308 transitions. Word has length 71 [2022-07-20 06:32:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:37,204 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 308 transitions. [2022-07-20 06:32:37,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 06:32:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 308 transitions. [2022-07-20 06:32:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-20 06:32:37,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:37,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:37,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-20 06:32:37,205 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1179991342, now seen corresponding path program 1 times [2022-07-20 06:32:37,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:37,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423817651] [2022-07-20 06:32:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:37,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:32:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 06:32:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-20 06:32:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:37,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:37,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423817651] [2022-07-20 06:32:37,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423817651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:37,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:37,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:37,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551625850] [2022-07-20 06:32:37,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:37,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:37,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:37,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:37,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:37,274 INFO L87 Difference]: Start difference. First operand 262 states and 308 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:37,428 INFO L93 Difference]: Finished difference Result 258 states and 301 transitions. [2022-07-20 06:32:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:32:37,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2022-07-20 06:32:37,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:37,430 INFO L225 Difference]: With dead ends: 258 [2022-07-20 06:32:37,430 INFO L226 Difference]: Without dead ends: 256 [2022-07-20 06:32:37,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-20 06:32:37,430 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 46 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:37,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1043 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-20 06:32:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2022-07-20 06:32:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 187 states have internal predecessors, (214), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-20 06:32:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 239 transitions. [2022-07-20 06:32:37,435 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 239 transitions. Word has length 74 [2022-07-20 06:32:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:37,435 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 239 transitions. [2022-07-20 06:32:37,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 239 transitions. [2022-07-20 06:32:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-20 06:32:37,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:37,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:37,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-20 06:32:37,437 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash 928752582, now seen corresponding path program 1 times [2022-07-20 06:32:37,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:37,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183047816] [2022-07-20 06:32:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 06:32:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-20 06:32:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:37,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:37,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183047816] [2022-07-20 06:32:37,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183047816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:37,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:37,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:37,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331543933] [2022-07-20 06:32:37,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:37,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:37,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:37,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:37,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:37,508 INFO L87 Difference]: Start difference. First operand 208 states and 239 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:37,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:37,848 INFO L93 Difference]: Finished difference Result 399 states and 460 transitions. [2022-07-20 06:32:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 06:32:37,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2022-07-20 06:32:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:37,850 INFO L225 Difference]: With dead ends: 399 [2022-07-20 06:32:37,850 INFO L226 Difference]: Without dead ends: 359 [2022-07-20 06:32:37,851 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 [2022-07-20 06:32:37,851 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 370 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:37,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1362 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:32:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-20 06:32:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 188. [2022-07-20 06:32:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1607142857142858) internal successors, (195), 170 states have internal predecessors, (195), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-20 06:32:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2022-07-20 06:32:37,856 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 74 [2022-07-20 06:32:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:37,857 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2022-07-20 06:32:37,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2022-07-20 06:32:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-20 06:32:37,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:37,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:37,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-20 06:32:37,860 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:37,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1434511596, now seen corresponding path program 1 times [2022-07-20 06:32:37,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:37,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141627021] [2022-07-20 06:32:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:37,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-20 06:32:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:37,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:37,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141627021] [2022-07-20 06:32:37,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141627021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:37,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:37,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646568868] [2022-07-20 06:32:37,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:37,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:37,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:37,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:37,924 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:37,992 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2022-07-20 06:32:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:32:37,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2022-07-20 06:32:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:37,993 INFO L225 Difference]: With dead ends: 196 [2022-07-20 06:32:37,993 INFO L226 Difference]: Without dead ends: 194 [2022-07-20 06:32:37,994 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 [2022-07-20 06:32:37,994 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 45 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:37,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 473 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-20 06:32:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2022-07-20 06:32:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1547619047619047) internal successors, (194), 170 states have internal predecessors, (194), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-20 06:32:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 213 transitions. [2022-07-20 06:32:37,998 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 213 transitions. Word has length 80 [2022-07-20 06:32:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:37,998 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 213 transitions. [2022-07-20 06:32:37,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 06:32:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 213 transitions. [2022-07-20 06:32:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-20 06:32:37,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:37,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:38,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-20 06:32:38,000 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:38,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1155457, now seen corresponding path program 1 times [2022-07-20 06:32:38,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:38,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990323360] [2022-07-20 06:32:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 06:32:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 06:32:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990323360] [2022-07-20 06:32:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990323360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:38,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:38,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475919370] [2022-07-20 06:32:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:38,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:38,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:38,077 INFO L87 Difference]: Start difference. First operand 188 states and 213 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:38,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:38,156 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2022-07-20 06:32:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:32:38,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 100 [2022-07-20 06:32:38,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:38,158 INFO L225 Difference]: With dead ends: 218 [2022-07-20 06:32:38,158 INFO L226 Difference]: Without dead ends: 218 [2022-07-20 06:32:38,158 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 [2022-07-20 06:32:38,158 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:38,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 643 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-20 06:32:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 190. [2022-07-20 06:32:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 170 states have (on average 1.1529411764705881) internal successors, (196), 172 states have internal predecessors, (196), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-20 06:32:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 215 transitions. [2022-07-20 06:32:38,162 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 215 transitions. Word has length 100 [2022-07-20 06:32:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:38,162 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 215 transitions. [2022-07-20 06:32:38,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 215 transitions. [2022-07-20 06:32:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-20 06:32:38,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:38,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:38,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-20 06:32:38,164 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash 877885761, now seen corresponding path program 1 times [2022-07-20 06:32:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:38,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556771579] [2022-07-20 06:32:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:38,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-20 06:32:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 06:32:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556771579] [2022-07-20 06:32:38,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556771579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:38,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:38,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 06:32:38,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604097859] [2022-07-20 06:32:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:38,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 06:32:38,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:38,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 06:32:38,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-20 06:32:38,257 INFO L87 Difference]: Start difference. First operand 190 states and 215 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:38,437 INFO L93 Difference]: Finished difference Result 227 states and 258 transitions. [2022-07-20 06:32:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:38,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 100 [2022-07-20 06:32:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:38,439 INFO L225 Difference]: With dead ends: 227 [2022-07-20 06:32:38,439 INFO L226 Difference]: Without dead ends: 194 [2022-07-20 06:32:38,439 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 [2022-07-20 06:32:38,441 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 280 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:38,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 848 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:38,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-20 06:32:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2022-07-20 06:32:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1428571428571428) internal successors, (192), 170 states have internal predecessors, (192), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-20 06:32:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 211 transitions. [2022-07-20 06:32:38,446 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 211 transitions. Word has length 100 [2022-07-20 06:32:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:38,446 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 211 transitions. [2022-07-20 06:32:38,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 211 transitions. [2022-07-20 06:32:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-20 06:32:38,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:38,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:38,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-20 06:32:38,448 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1148812128, now seen corresponding path program 1 times [2022-07-20 06:32:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:38,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315276287] [2022-07-20 06:32:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-20 06:32:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-20 06:32:38,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:38,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315276287] [2022-07-20 06:32:38,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315276287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:38,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:38,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 06:32:38,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172363230] [2022-07-20 06:32:38,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:38,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 06:32:38,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 06:32:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-20 06:32:38,599 INFO L87 Difference]: Start difference. First operand 188 states and 211 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:38,970 INFO L93 Difference]: Finished difference Result 293 states and 337 transitions. [2022-07-20 06:32:38,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 06:32:38,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 101 [2022-07-20 06:32:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:38,972 INFO L225 Difference]: With dead ends: 293 [2022-07-20 06:32:38,972 INFO L226 Difference]: Without dead ends: 262 [2022-07-20 06:32:38,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-07-20 06:32:38,973 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 473 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:38,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1238 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:32:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-20 06:32:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 203. [2022-07-20 06:32:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 182 states have (on average 1.1483516483516483) internal successors, (209), 184 states have internal predecessors, (209), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-20 06:32:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2022-07-20 06:32:38,993 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 101 [2022-07-20 06:32:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:38,995 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2022-07-20 06:32:38,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2022-07-20 06:32:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-20 06:32:38,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:38,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:38,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-20 06:32:38,997 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash 312231464, now seen corresponding path program 1 times [2022-07-20 06:32:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:38,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313403956] [2022-07-20 06:32:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-20 06:32:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-20 06:32:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313403956] [2022-07-20 06:32:39,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313403956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:39,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:39,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 06:32:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19977028] [2022-07-20 06:32:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:39,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 06:32:39,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 06:32:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-20 06:32:39,157 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:39,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:39,381 INFO L93 Difference]: Finished difference Result 220 states and 248 transitions. [2022-07-20 06:32:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:39,382 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 102 [2022-07-20 06:32:39,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:39,383 INFO L225 Difference]: With dead ends: 220 [2022-07-20 06:32:39,383 INFO L226 Difference]: Without dead ends: 217 [2022-07-20 06:32:39,383 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 [2022-07-20 06:32:39,383 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 30 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:39,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1568 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-20 06:32:39,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 203. [2022-07-20 06:32:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 182 states have (on average 1.1428571428571428) internal successors, (208), 184 states have internal predecessors, (208), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-20 06:32:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2022-07-20 06:32:39,387 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 102 [2022-07-20 06:32:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:39,387 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2022-07-20 06:32:39,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2022-07-20 06:32:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-20 06:32:39,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:39,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:39,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-20 06:32:39,389 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:39,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash -231607862, now seen corresponding path program 1 times [2022-07-20 06:32:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:39,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255372954] [2022-07-20 06:32:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-20 06:32:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 06:32:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:39,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255372954] [2022-07-20 06:32:39,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255372954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:39,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:39,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:32:39,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140104857] [2022-07-20 06:32:39,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:39,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:32:39,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:39,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:32:39,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:32:39,460 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:39,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:39,539 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2022-07-20 06:32:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:32:39,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 105 [2022-07-20 06:32:39,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:39,541 INFO L225 Difference]: With dead ends: 204 [2022-07-20 06:32:39,541 INFO L226 Difference]: Without dead ends: 195 [2022-07-20 06:32:39,541 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 [2022-07-20 06:32:39,543 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 175 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:39,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 277 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-20 06:32:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2022-07-20 06:32:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 161 states have (on average 1.124223602484472) internal successors, (181), 163 states have internal predecessors, (181), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-20 06:32:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 200 transitions. [2022-07-20 06:32:39,548 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 200 transitions. Word has length 105 [2022-07-20 06:32:39,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:39,549 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 200 transitions. [2022-07-20 06:32:39,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 06:32:39,549 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 200 transitions. [2022-07-20 06:32:39,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-20 06:32:39,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:39,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:39,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-20 06:32:39,550 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:39,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:39,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1876893126, now seen corresponding path program 1 times [2022-07-20 06:32:39,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:39,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622957798] [2022-07-20 06:32:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:39,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-20 06:32:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-20 06:32:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-20 06:32:39,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:39,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622957798] [2022-07-20 06:32:39,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622957798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:39,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:39,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:39,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704665501] [2022-07-20 06:32:39,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:39,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:39,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:39,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:39,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:39,672 INFO L87 Difference]: Start difference. First operand 181 states and 200 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 06:32:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:39,779 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2022-07-20 06:32:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:32:39,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 111 [2022-07-20 06:32:39,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:39,783 INFO L225 Difference]: With dead ends: 170 [2022-07-20 06:32:39,783 INFO L226 Difference]: Without dead ends: 160 [2022-07-20 06:32:39,783 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 [2022-07-20 06:32:39,784 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 66 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:39,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 614 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-20 06:32:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-20 06:32:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 144 states have internal predecessors, (159), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-20 06:32:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2022-07-20 06:32:39,787 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 111 [2022-07-20 06:32:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:39,787 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2022-07-20 06:32:39,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 06:32:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2022-07-20 06:32:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-20 06:32:39,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:39,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-20 06:32:39,789 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1629424061, now seen corresponding path program 1 times [2022-07-20 06:32:39,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18100103] [2022-07-20 06:32:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:39,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-20 06:32:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-20 06:32:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 06:32:39,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:39,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18100103] [2022-07-20 06:32:39,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18100103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:39,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:39,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 06:32:39,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790376925] [2022-07-20 06:32:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 06:32:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 06:32:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:32:39,891 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 06:32:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:40,099 INFO L93 Difference]: Finished difference Result 278 states and 303 transitions. [2022-07-20 06:32:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 06:32:40,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-07-20 06:32:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:40,102 INFO L225 Difference]: With dead ends: 278 [2022-07-20 06:32:40,103 INFO L226 Difference]: Without dead ends: 160 [2022-07-20 06:32:40,103 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 [2022-07-20 06:32:40,105 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 136 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:40,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 744 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-20 06:32:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-20 06:32:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.1048951048951048) internal successors, (158), 144 states have internal predecessors, (158), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-20 06:32:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2022-07-20 06:32:40,108 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 112 [2022-07-20 06:32:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:40,109 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2022-07-20 06:32:40,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 06:32:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2022-07-20 06:32:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-20 06:32:40,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:40,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:40,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-20 06:32:40,110 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-20 06:32:40,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:40,110 INFO L85 PathProgramCache]: Analyzing trace with hash 692377857, now seen corresponding path program 1 times [2022-07-20 06:32:40,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:32:40,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541064583] [2022-07-20 06:32:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:40,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:32:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 06:32:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:40,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-20 06:32:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-20 06:32:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-20 06:32:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 06:32:40,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:32:40,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541064583] [2022-07-20 06:32:40,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541064583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:40,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:40,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-20 06:32:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042309647] [2022-07-20 06:32:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:40,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 06:32:40,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:32:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 06:32:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-20 06:32:40,235 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 06:32:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:40,533 INFO L93 Difference]: Finished difference Result 170 states and 187 transitions. [2022-07-20 06:32:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 06:32:40,534 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-07-20 06:32:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:40,534 INFO L225 Difference]: With dead ends: 170 [2022-07-20 06:32:40,534 INFO L226 Difference]: Without dead ends: 0 [2022-07-20 06:32:40,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2022-07-20 06:32:40,535 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 401 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:40,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 604 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:32:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-20 06:32:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-20 06:32:40,535 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) [2022-07-20 06:32:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-20 06:32:40,536 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2022-07-20 06:32:40,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:40,536 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-20 06:32:40,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 06:32:40,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-20 06:32:40,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-20 06:32:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-07-20 06:32:40,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-07-20 06:32:40,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-20 06:32:40,546 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:40,549 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 06:32:40,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:32:40 BoogieIcfgContainer [2022-07-20 06:32:40,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 06:32:40,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 06:32:40,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 06:32:40,554 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 06:32:40,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:32:27" (3/4) ... [2022-07-20 06:32:40,557 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-20 06:32:40,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2022-07-20 06:32:40,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2022-07-20 06:32:40,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2022-07-20 06:32:40,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2022-07-20 06:32:40,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2022-07-20 06:32:40,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2022-07-20 06:32:40,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-07-20 06:32:40,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-20 06:32:40,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-07-20 06:32:40,711 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-20 06:32:40,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 06:32:40,712 INFO L158 Benchmark]: Toolchain (without parser) took 15219.03ms. Allocated memory was 94.4MB in the beginning and 201.3MB in the end (delta: 107.0MB). Free memory was 62.4MB in the beginning and 69.7MB in the end (delta: -7.3MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. [2022-07-20 06:32:40,712 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory was 52.6MB in the beginning and 52.6MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:32:40,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.37ms. Allocated memory is still 94.4MB. Free memory was 62.2MB in the beginning and 59.7MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 06:32:40,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.24ms. Allocated memory is still 94.4MB. Free memory was 59.7MB in the beginning and 54.8MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-20 06:32:40,713 INFO L158 Benchmark]: Boogie Preprocessor took 53.89ms. Allocated memory is still 94.4MB. Free memory was 54.8MB in the beginning and 51.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-20 06:32:40,713 INFO L158 Benchmark]: RCFGBuilder took 1023.71ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 51.7MB in the beginning and 81.3MB in the end (delta: -29.7MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2022-07-20 06:32:40,713 INFO L158 Benchmark]: TraceAbstraction took 13514.03ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 80.6MB in the beginning and 84.4MB in the end (delta: -3.7MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2022-07-20 06:32:40,714 INFO L158 Benchmark]: Witness Printer took 157.59ms. Allocated memory is still 201.3MB. Free memory was 84.4MB in the beginning and 69.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-20 06:32:40,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory was 52.6MB in the beginning and 52.6MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.37ms. Allocated memory is still 94.4MB. Free memory was 62.2MB in the beginning and 59.7MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.24ms. Allocated memory is still 94.4MB. Free memory was 59.7MB in the beginning and 54.8MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.89ms. Allocated memory is still 94.4MB. Free memory was 54.8MB in the beginning and 51.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1023.71ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 51.7MB in the beginning and 81.3MB in the end (delta: -29.7MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13514.03ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 80.6MB in the beginning and 84.4MB in the end (delta: -3.7MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. * Witness Printer took 157.59ms. Allocated memory is still 201.3MB. Free memory was 84.4MB in the beginning and 69.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 65]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 670]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 238 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13.5s, OverallIterations: 48, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8824 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8690 mSDsluCounter, 48758 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36323 mSDsCounter, 1342 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10770 IncrementalHoareTripleChecker+Invalid, 12112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1342 mSolverCounterUnsat, 12435 mSDtfsCounter, 10770 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 587 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=13, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 48 MinimizatonAttempts, 1430 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 2599 NumberOfCodeBlocks, 2599 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 2551 ConstructedInterpolants, 0 QuantifiedInterpolants, 5949 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 140/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-20 06:32:40,760 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