./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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/kbfiltr_simpl2.cil-1.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 bf75d7f1708750397c6bdac14ac08b964b10a95dcecc15b57a02c9969977c6ec --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:07:51,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:07:51,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:07:51,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:07:51,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:07:51,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:07:51,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:07:51,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:07:51,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:07:51,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:07:51,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:07:51,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:07:51,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:07:51,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:07:51,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:07:51,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:07:51,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:07:51,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:07:51,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:07:51,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:07:51,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:07:51,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:07:51,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:07:51,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:07:51,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:07:51,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:07:51,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:07:51,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:07:51,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:07:51,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:07:51,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:07:51,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:07:51,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:07:51,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:07:51,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:07:51,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:07:51,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:07:51,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:07:51,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:07:51,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:07:51,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:07:51,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 06:07:51,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:07:51,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:07:51,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:07:51,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:07:51,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:07:51,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:07:51,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:07:51,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:07:51,438 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:07:51,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:07:51,439 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:07:51,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:07:51,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:07:51,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:07:51,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:07:51,440 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:07:51,440 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:07:51,440 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:07:51,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:07:51,440 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:07:51,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:07:51,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:07:51,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:07:51,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:07:51,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:07:51,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:51,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:07:51,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:07:51,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 06:07:51,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 06:07:51,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:07:51,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf75d7f1708750397c6bdac14ac08b964b10a95dcecc15b57a02c9969977c6ec [2021-12-16 06:07:51,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:07:51,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:07:51,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:07:51,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:07:51,742 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:07:51,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2021-12-16 06:07:51,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023b15fea/e05c2af0f211422da2bd2b8c7a7ae011/FLAGbaf86f085 [2021-12-16 06:07:52,224 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:07:52,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2021-12-16 06:07:52,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023b15fea/e05c2af0f211422da2bd2b8c7a7ae011/FLAGbaf86f085 [2021-12-16 06:07:52,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023b15fea/e05c2af0f211422da2bd2b8c7a7ae011 [2021-12-16 06:07:52,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:07:52,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:07:52,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:52,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:07:52,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:07:52,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5907d384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52, skipping insertion in model container [2021-12-16 06:07:52,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:07:52,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:07:52,533 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/kbfiltr_simpl2.cil-1.c[29620,29633] [2021-12-16 06:07:52,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:52,542 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 06:07:52,627 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/kbfiltr_simpl2.cil-1.c[29620,29633] [2021-12-16 06:07:52,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:52,641 INFO L208 MainTranslator]: Completed translation [2021-12-16 06:07:52,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52 WrapperNode [2021-12-16 06:07:52,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:52,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:52,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 06:07:52,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 06:07:52,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,720 INFO L137 Inliner]: procedures = 29, calls = 43, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 662 [2021-12-16 06:07:52,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:52,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 06:07:52,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 06:07:52,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 06:07:52,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 06:07:52,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 06:07:52,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 06:07:52,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 06:07:52,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (1/1) ... [2021-12-16 06:07:52,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:52,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 06:07:52,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 06:07:52,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 06:07:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 06:07:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2021-12-16 06:07:52,877 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2021-12-16 06:07:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-16 06:07:52,877 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-16 06:07:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2021-12-16 06:07:52,878 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2021-12-16 06:07:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-16 06:07:52,878 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-16 06:07:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-16 06:07:52,878 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-16 06:07:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 06:07:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-16 06:07:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-16 06:07:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 06:07:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 06:07:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2021-12-16 06:07:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2021-12-16 06:07:53,019 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 06:07:53,021 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 06:07:53,127 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:53,131 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:53,133 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:53,138 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:53,139 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:53,518 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume !false; [2021-12-16 06:07:53,519 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume false; [2021-12-16 06:07:53,519 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##63: assume !false; [2021-12-16 06:07:53,519 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume false; [2021-12-16 06:07:53,519 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##129: assume false; [2021-12-16 06:07:53,520 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume !false; [2021-12-16 06:07:53,520 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-12-16 06:07:53,520 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-12-16 06:07:53,521 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##113: assume !false; [2021-12-16 06:07:53,521 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume false; [2021-12-16 06:07:53,536 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:53,572 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-12-16 06:07:53,572 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-12-16 06:07:53,579 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 06:07:53,590 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 06:07:53,590 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 06:07:53,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:53 BoogieIcfgContainer [2021-12-16 06:07:53,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 06:07:53,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 06:07:53,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 06:07:53,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 06:07:53,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:07:52" (1/3) ... [2021-12-16 06:07:53,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e879b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:53, skipping insertion in model container [2021-12-16 06:07:53,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:52" (2/3) ... [2021-12-16 06:07:53,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e879b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:53, skipping insertion in model container [2021-12-16 06:07:53,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:53" (3/3) ... [2021-12-16 06:07:53,602 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.c [2021-12-16 06:07:53,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 06:07:53,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 06:07:53,655 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 06:07:53,665 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 06:07:53,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 06:07:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 171 states have (on average 1.6023391812865497) internal successors, (274), 189 states have internal predecessors, (274), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-16 06:07:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 06:07:53,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:53,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:53,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:53,716 INFO L85 PathProgramCache]: Analyzing trace with hash -15799124, now seen corresponding path program 1 times [2021-12-16 06:07:53,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:53,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909801612] [2021-12-16 06:07:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:53,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:53,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909801612] [2021-12-16 06:07:53,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909801612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:53,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:53,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:53,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617586692] [2021-12-16 06:07:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:53,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:53,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:53,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:53,993 INFO L87 Difference]: Start difference. First operand has 209 states, 171 states have (on average 1.6023391812865497) internal successors, (274), 189 states have internal predecessors, (274), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) 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) [2021-12-16 06:07:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:54,051 INFO L93 Difference]: Finished difference Result 211 states and 314 transitions. [2021-12-16 06:07:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:54,056 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 [2021-12-16 06:07:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:54,065 INFO L225 Difference]: With dead ends: 211 [2021-12-16 06:07:54,066 INFO L226 Difference]: Without dead ends: 207 [2021-12-16 06:07:54,067 INFO L932 BasicCegarLoop]: 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 [2021-12-16 06:07:54,070 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 179 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:54,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 417 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-16 06:07:54,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-12-16 06:07:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 169 states have (on average 1.5739644970414202) internal successors, (266), 185 states have internal predecessors, (266), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-16 06:07:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 309 transitions. [2021-12-16 06:07:54,145 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 309 transitions. Word has length 8 [2021-12-16 06:07:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:54,145 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 309 transitions. [2021-12-16 06:07:54,146 INFO L471 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) [2021-12-16 06:07:54,146 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 309 transitions. [2021-12-16 06:07:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 06:07:54,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:54,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:54,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 06:07:54,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:54,151 INFO L85 PathProgramCache]: Analyzing trace with hash -191249987, now seen corresponding path program 1 times [2021-12-16 06:07:54,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:54,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531235136] [2021-12-16 06:07:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:54,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:54,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:54,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531235136] [2021-12-16 06:07:54,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531235136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:54,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:54,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:07:54,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335242332] [2021-12-16 06:07:54,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:54,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:54,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:54,207 INFO L87 Difference]: Start difference. First operand 205 states and 309 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:54,251 INFO L93 Difference]: Finished difference Result 204 states and 308 transitions. [2021-12-16 06:07:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-16 06:07:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:54,253 INFO L225 Difference]: With dead ends: 204 [2021-12-16 06:07:54,254 INFO L226 Difference]: Without dead ends: 198 [2021-12-16 06:07:54,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:54,255 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 199 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:54,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 372 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:54,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-16 06:07:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-12-16 06:07:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 163 states have (on average 1.5276073619631902) internal successors, (249), 178 states have internal predecessors, (249), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-16 06:07:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 292 transitions. [2021-12-16 06:07:54,268 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 292 transitions. Word has length 15 [2021-12-16 06:07:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:54,268 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 292 transitions. [2021-12-16 06:07:54,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:54,269 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 292 transitions. [2021-12-16 06:07:54,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 06:07:54,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:54,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:54,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 06:07:54,270 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash 705160586, now seen corresponding path program 1 times [2021-12-16 06:07:54,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:54,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902189162] [2021-12-16 06:07:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:54,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:54,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:54,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902189162] [2021-12-16 06:07:54,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902189162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:54,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:54,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:54,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888368815] [2021-12-16 06:07:54,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:54,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:54,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:54,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:54,339 INFO L87 Difference]: Start difference. First operand 198 states and 292 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, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:54,439 INFO L93 Difference]: Finished difference Result 263 states and 373 transitions. [2021-12-16 06:07:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:54,440 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, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-16 06:07:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:54,442 INFO L225 Difference]: With dead ends: 263 [2021-12-16 06:07:54,444 INFO L226 Difference]: Without dead ends: 262 [2021-12-16 06:07:54,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:54,445 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 201 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:54,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 426 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-16 06:07:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 249. [2021-12-16 06:07:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 213 states have (on average 1.431924882629108) internal successors, (305), 215 states have internal predecessors, (305), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (27), 25 states have call predecessors, (27), 18 states have call successors, (27) [2021-12-16 06:07:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 357 transitions. [2021-12-16 06:07:54,481 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 357 transitions. Word has length 19 [2021-12-16 06:07:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:54,482 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 357 transitions. [2021-12-16 06:07:54,483 INFO L471 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, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 357 transitions. [2021-12-16 06:07:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 06:07:54,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:54,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:54,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 06:07:54,486 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:54,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2016043499, now seen corresponding path program 1 times [2021-12-16 06:07:54,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:54,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994249273] [2021-12-16 06:07:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:54,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:54,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:54,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994249273] [2021-12-16 06:07:54,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994249273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:54,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:54,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:54,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203204950] [2021-12-16 06:07:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:54,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:54,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:54,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:54,564 INFO L87 Difference]: Start difference. First operand 249 states and 357 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-12-16 06:07:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:54,581 INFO L93 Difference]: Finished difference Result 306 states and 428 transitions. [2021-12-16 06:07:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:54,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2021-12-16 06:07:54,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:54,585 INFO L225 Difference]: With dead ends: 306 [2021-12-16 06:07:54,585 INFO L226 Difference]: Without dead ends: 306 [2021-12-16 06:07:54,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:54,587 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 238 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:54,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 352 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-12-16 06:07:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 287. [2021-12-16 06:07:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 253 states have (on average 1.4189723320158103) internal successors, (359), 253 states have internal predecessors, (359), 21 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-16 06:07:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 406 transitions. [2021-12-16 06:07:54,616 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 406 transitions. Word has length 18 [2021-12-16 06:07:54,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:54,616 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 406 transitions. [2021-12-16 06:07:54,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-12-16 06:07:54,617 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 406 transitions. [2021-12-16 06:07:54,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-16 06:07:54,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:54,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:54,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 06:07:54,623 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:54,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:54,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1374657914, now seen corresponding path program 1 times [2021-12-16 06:07:54,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:54,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887668153] [2021-12-16 06:07:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:54,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:54,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:54,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887668153] [2021-12-16 06:07:54,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887668153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:54,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:54,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:54,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206187693] [2021-12-16 06:07:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:54,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:54,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:54,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:54,708 INFO L87 Difference]: Start difference. First operand 287 states and 406 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:54,759 INFO L93 Difference]: Finished difference Result 286 states and 403 transitions. [2021-12-16 06:07:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:54,759 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), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-16 06:07:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:54,761 INFO L225 Difference]: With dead ends: 286 [2021-12-16 06:07:54,761 INFO L226 Difference]: Without dead ends: 286 [2021-12-16 06:07:54,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:54,763 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 25 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:54,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 469 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-16 06:07:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-12-16 06:07:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 253 states have (on average 1.4110671936758894) internal successors, (357), 252 states have internal predecessors, (357), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-16 06:07:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 403 transitions. [2021-12-16 06:07:54,775 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 403 transitions. Word has length 29 [2021-12-16 06:07:54,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:54,775 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 403 transitions. [2021-12-16 06:07:54,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 403 transitions. [2021-12-16 06:07:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 06:07:54,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:54,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:54,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 06:07:54,778 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash -889185583, now seen corresponding path program 1 times [2021-12-16 06:07:54,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:54,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505427970] [2021-12-16 06:07:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:54,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:54,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:54,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505427970] [2021-12-16 06:07:54,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505427970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:54,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:54,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:54,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321336660] [2021-12-16 06:07:54,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:54,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:54,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:54,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:54,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:54,942 INFO L87 Difference]: Start difference. First operand 286 states and 403 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,106 INFO L93 Difference]: Finished difference Result 303 states and 422 transitions. [2021-12-16 06:07:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:55,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-12-16 06:07:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,110 INFO L225 Difference]: With dead ends: 303 [2021-12-16 06:07:55,111 INFO L226 Difference]: Without dead ends: 303 [2021-12-16 06:07:55,111 INFO L932 BasicCegarLoop]: 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 [2021-12-16 06:07:55,118 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 331 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:55,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 624 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-16 06:07:55,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 296. [2021-12-16 06:07:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 263 states have (on average 1.403041825095057) internal successors, (369), 261 states have internal predecessors, (369), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-16 06:07:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 415 transitions. [2021-12-16 06:07:55,147 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 415 transitions. Word has length 33 [2021-12-16 06:07:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:55,148 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 415 transitions. [2021-12-16 06:07:55,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 415 transitions. [2021-12-16 06:07:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:07:55,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 06:07:55,155 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2121154083, now seen corresponding path program 1 times [2021-12-16 06:07:55,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:55,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066885597] [2021-12-16 06:07:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:55,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:55,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066885597] [2021-12-16 06:07:55,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066885597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:55,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:55,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:55,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516235226] [2021-12-16 06:07:55,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:55,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:55,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:55,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:55,290 INFO L87 Difference]: Start difference. First operand 296 states and 415 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-12-16 06:07:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,485 INFO L93 Difference]: Finished difference Result 303 states and 421 transitions. [2021-12-16 06:07:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:55,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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 34 [2021-12-16 06:07:55,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,492 INFO L225 Difference]: With dead ends: 303 [2021-12-16 06:07:55,493 INFO L226 Difference]: Without dead ends: 303 [2021-12-16 06:07:55,493 INFO L932 BasicCegarLoop]: 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 [2021-12-16 06:07:55,497 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 316 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:55,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 813 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-16 06:07:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2021-12-16 06:07:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 264 states have (on average 1.4015151515151516) internal successors, (370), 262 states have internal predecessors, (370), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-16 06:07:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 416 transitions. [2021-12-16 06:07:55,513 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 416 transitions. Word has length 34 [2021-12-16 06:07:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:55,514 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 416 transitions. [2021-12-16 06:07:55,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-12-16 06:07:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 416 transitions. [2021-12-16 06:07:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:07:55,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 06:07:55,519 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1780979361, now seen corresponding path program 1 times [2021-12-16 06:07:55,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:55,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946619789] [2021-12-16 06:07:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:55,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:55,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946619789] [2021-12-16 06:07:55,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946619789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:55,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:55,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:55,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573166600] [2021-12-16 06:07:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:55,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:55,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:55,571 INFO L87 Difference]: Start difference. First operand 297 states and 416 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (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) [2021-12-16 06:07:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,710 INFO L93 Difference]: Finished difference Result 278 states and 380 transitions. [2021-12-16 06:07:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:55,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (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 34 [2021-12-16 06:07:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,713 INFO L225 Difference]: With dead ends: 278 [2021-12-16 06:07:55,713 INFO L226 Difference]: Without dead ends: 278 [2021-12-16 06:07:55,713 INFO L932 BasicCegarLoop]: 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 [2021-12-16 06:07:55,714 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 313 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:55,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 731 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-16 06:07:55,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 264. [2021-12-16 06:07:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 233 states have (on average 1.390557939914163) internal successors, (324), 231 states have internal predecessors, (324), 18 states have call successors, (18), 10 states have call predecessors, (18), 12 states have return successors, (23), 22 states have call predecessors, (23), 14 states have call successors, (23) [2021-12-16 06:07:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 365 transitions. [2021-12-16 06:07:55,726 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 365 transitions. Word has length 34 [2021-12-16 06:07:55,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:55,726 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 365 transitions. [2021-12-16 06:07:55,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (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) [2021-12-16 06:07:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 365 transitions. [2021-12-16 06:07:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:07:55,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 06:07:55,728 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2069817079, now seen corresponding path program 1 times [2021-12-16 06:07:55,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:55,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158152528] [2021-12-16 06:07:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:55,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:55,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158152528] [2021-12-16 06:07:55,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158152528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:55,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:55,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:55,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111274792] [2021-12-16 06:07:55,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:55,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:55,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:55,769 INFO L87 Difference]: Start difference. First operand 264 states and 365 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-12-16 06:07:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,858 INFO L93 Difference]: Finished difference Result 282 states and 384 transitions. [2021-12-16 06:07:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:55,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 34 [2021-12-16 06:07:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,860 INFO L225 Difference]: With dead ends: 282 [2021-12-16 06:07:55,860 INFO L226 Difference]: Without dead ends: 282 [2021-12-16 06:07:55,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:55,861 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 289 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:55,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 421 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-16 06:07:55,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 264. [2021-12-16 06:07:55,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 233 states have (on average 1.3819742489270386) internal successors, (322), 231 states have internal predecessors, (322), 18 states have call successors, (18), 10 states have call predecessors, (18), 12 states have return successors, (23), 22 states have call predecessors, (23), 14 states have call successors, (23) [2021-12-16 06:07:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 363 transitions. [2021-12-16 06:07:55,875 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 363 transitions. Word has length 34 [2021-12-16 06:07:55,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:55,876 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 363 transitions. [2021-12-16 06:07:55,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-12-16 06:07:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 363 transitions. [2021-12-16 06:07:55,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:07:55,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 06:07:55,878 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1120484039, now seen corresponding path program 1 times [2021-12-16 06:07:55,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:55,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059885035] [2021-12-16 06:07:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:55,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:55,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059885035] [2021-12-16 06:07:55,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059885035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:55,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:55,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:55,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133378463] [2021-12-16 06:07:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:55,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:55,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:55,917 INFO L87 Difference]: Start difference. First operand 264 states and 363 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,985 INFO L93 Difference]: Finished difference Result 258 states and 352 transitions. [2021-12-16 06:07:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-16 06:07:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,987 INFO L225 Difference]: With dead ends: 258 [2021-12-16 06:07:55,987 INFO L226 Difference]: Without dead ends: 82 [2021-12-16 06:07:55,987 INFO L932 BasicCegarLoop]: 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 [2021-12-16 06:07:55,988 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 285 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:55,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 421 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-16 06:07:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-12-16 06:07:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 06:07:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2021-12-16 06:07:55,991 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 35 [2021-12-16 06:07:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:55,991 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2021-12-16 06:07:55,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2021-12-16 06:07:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 06:07:55,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 06:07:55,993 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1877593248, now seen corresponding path program 1 times [2021-12-16 06:07:55,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:55,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716762171] [2021-12-16 06:07:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 06:07:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716762171] [2021-12-16 06:07:56,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716762171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:56,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621462977] [2021-12-16 06:07:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:56,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:56,034 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,080 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2021-12-16 06:07:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:56,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 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 39 [2021-12-16 06:07:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,082 INFO L225 Difference]: With dead ends: 80 [2021-12-16 06:07:56,082 INFO L226 Difference]: Without dead ends: 80 [2021-12-16 06:07:56,082 INFO L932 BasicCegarLoop]: 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 [2021-12-16 06:07:56,083 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 31 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 222 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-16 06:07:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-16 06:07:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 06:07:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2021-12-16 06:07:56,086 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 39 [2021-12-16 06:07:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,087 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2021-12-16 06:07:56,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2021-12-16 06:07:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 06:07:56,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 06:07:56,088 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1958713032, now seen corresponding path program 1 times [2021-12-16 06:07:56,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051122688] [2021-12-16 06:07:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051122688] [2021-12-16 06:07:56,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051122688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:56,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246290663] [2021-12-16 06:07:56,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:56,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:56,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:56,160 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-12-16 06:07:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,211 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-12-16 06:07:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:56,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 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 41 [2021-12-16 06:07:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,213 INFO L225 Difference]: With dead ends: 98 [2021-12-16 06:07:56,213 INFO L226 Difference]: Without dead ends: 91 [2021-12-16 06:07:56,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:56,214 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 22 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 365 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-16 06:07:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2021-12-16 06:07:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 74 states have internal predecessors, (88), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 06:07:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2021-12-16 06:07:56,217 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 41 [2021-12-16 06:07:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,218 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2021-12-16 06:07:56,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-12-16 06:07:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2021-12-16 06:07:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 06:07:56,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 06:07:56,219 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,220 INFO L85 PathProgramCache]: Analyzing trace with hash -306878835, now seen corresponding path program 1 times [2021-12-16 06:07:56,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986450532] [2021-12-16 06:07:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986450532] [2021-12-16 06:07:56,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986450532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:56,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612720756] [2021-12-16 06:07:56,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:56,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:56,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:56,295 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,382 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2021-12-16 06:07:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 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 43 [2021-12-16 06:07:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,384 INFO L225 Difference]: With dead ends: 89 [2021-12-16 06:07:56,384 INFO L226 Difference]: Without dead ends: 89 [2021-12-16 06:07:56,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:56,385 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 17 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 396 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-16 06:07:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2021-12-16 06:07:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 75 states have internal predecessors, (89), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 06:07:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2021-12-16 06:07:56,388 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 43 [2021-12-16 06:07:56,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,388 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2021-12-16 06:07:56,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:56,389 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2021-12-16 06:07:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 06:07:56,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 06:07:56,390 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1924386198, now seen corresponding path program 1 times [2021-12-16 06:07:56,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327720378] [2021-12-16 06:07:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327720378] [2021-12-16 06:07:56,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327720378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:56,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168881576] [2021-12-16 06:07:56,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:56,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:56,437 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,489 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2021-12-16 06:07:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:56,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2021-12-16 06:07:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,491 INFO L225 Difference]: With dead ends: 99 [2021-12-16 06:07:56,491 INFO L226 Difference]: Without dead ends: 97 [2021-12-16 06:07:56,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:56,492 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 23 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 231 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-16 06:07:56,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2021-12-16 06:07:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 77 states have internal predecessors, (90), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 06:07:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2021-12-16 06:07:56,495 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 42 [2021-12-16 06:07:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,495 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2021-12-16 06:07:56,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2021-12-16 06:07:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:07:56,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 06:07:56,497 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1375541140, now seen corresponding path program 1 times [2021-12-16 06:07:56,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760507803] [2021-12-16 06:07:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760507803] [2021-12-16 06:07:56,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760507803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:56,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102178649] [2021-12-16 06:07:56,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:56,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:56,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:56,545 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,593 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2021-12-16 06:07:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:56,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-12-16 06:07:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,595 INFO L225 Difference]: With dead ends: 167 [2021-12-16 06:07:56,595 INFO L226 Difference]: Without dead ends: 167 [2021-12-16 06:07:56,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:56,596 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 62 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 190 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:56,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-16 06:07:56,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2021-12-16 06:07:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 139 states have internal predecessors, (163), 9 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (10), 9 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-16 06:07:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2021-12-16 06:07:56,600 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 44 [2021-12-16 06:07:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,600 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2021-12-16 06:07:56,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2021-12-16 06:07:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:07:56,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 06:07:56,601 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1144418794, now seen corresponding path program 1 times [2021-12-16 06:07:56,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428784401] [2021-12-16 06:07:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428784401] [2021-12-16 06:07:56,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428784401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:56,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125848883] [2021-12-16 06:07:56,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:56,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:56,682 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,732 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2021-12-16 06:07:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:56,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 3 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 44 [2021-12-16 06:07:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,733 INFO L225 Difference]: With dead ends: 145 [2021-12-16 06:07:56,733 INFO L226 Difference]: Without dead ends: 145 [2021-12-16 06:07:56,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:56,734 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 338 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-16 06:07:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-16 06:07:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 125 states have (on average 1.16) internal successors, (145), 127 states have internal predecessors, (145), 9 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (10), 9 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-16 06:07:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 164 transitions. [2021-12-16 06:07:56,738 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 164 transitions. Word has length 44 [2021-12-16 06:07:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,738 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 164 transitions. [2021-12-16 06:07:56,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 164 transitions. [2021-12-16 06:07:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:56,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 06:07:56,740 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1135569949, now seen corresponding path program 1 times [2021-12-16 06:07:56,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298444055] [2021-12-16 06:07:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298444055] [2021-12-16 06:07:56,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298444055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:56,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861019776] [2021-12-16 06:07:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:56,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:56,829 INFO L87 Difference]: Start difference. First operand 145 states and 164 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,940 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2021-12-16 06:07:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:56,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2021-12-16 06:07:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,941 INFO L225 Difference]: With dead ends: 133 [2021-12-16 06:07:56,942 INFO L226 Difference]: Without dead ends: 129 [2021-12-16 06:07:56,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:56,943 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 76 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 269 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-16 06:07:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-12-16 06:07:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 111 states have (on average 1.1441441441441442) internal successors, (127), 113 states have internal predecessors, (127), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-16 06:07:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2021-12-16 06:07:56,947 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 48 [2021-12-16 06:07:56,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,947 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2021-12-16 06:07:56,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:56,947 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2021-12-16 06:07:56,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 06:07:56,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 06:07:56,949 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1665628399, now seen corresponding path program 1 times [2021-12-16 06:07:56,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626649315] [2021-12-16 06:07:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626649315] [2021-12-16 06:07:57,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626649315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:57,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387390303] [2021-12-16 06:07:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:57,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:57,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:57,015 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,059 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-12-16 06:07:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:57,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2021-12-16 06:07:57,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,060 INFO L225 Difference]: With dead ends: 141 [2021-12-16 06:07:57,060 INFO L226 Difference]: Without dead ends: 141 [2021-12-16 06:07:57,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:57,061 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 14 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 243 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-16 06:07:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2021-12-16 06:07:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-16 06:07:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2021-12-16 06:07:57,065 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 49 [2021-12-16 06:07:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,065 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2021-12-16 06:07:57,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2021-12-16 06:07:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 06:07:57,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 06:07:57,067 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1923793837, now seen corresponding path program 1 times [2021-12-16 06:07:57,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692625451] [2021-12-16 06:07:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692625451] [2021-12-16 06:07:57,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692625451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:57,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673878431] [2021-12-16 06:07:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:57,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:57,152 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 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) [2021-12-16 06:07:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,256 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2021-12-16 06:07:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:57,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 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 49 [2021-12-16 06:07:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,258 INFO L225 Difference]: With dead ends: 132 [2021-12-16 06:07:57,258 INFO L226 Difference]: Without dead ends: 115 [2021-12-16 06:07:57,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:07:57,259 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 106 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 197 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-12-16 06:07:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-12-16 06:07:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.121212121212121) internal successors, (111), 100 states have internal predecessors, (111), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-16 06:07:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-12-16 06:07:57,262 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 49 [2021-12-16 06:07:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,263 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-12-16 06:07:57,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 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) [2021-12-16 06:07:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-12-16 06:07:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 06:07:57,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 06:07:57,264 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,265 INFO L85 PathProgramCache]: Analyzing trace with hash -635303633, now seen corresponding path program 1 times [2021-12-16 06:07:57,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953760379] [2021-12-16 06:07:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953760379] [2021-12-16 06:07:57,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953760379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:57,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361390370] [2021-12-16 06:07:57,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:57,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:57,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:57,319 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,366 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2021-12-16 06:07:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:57,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-12-16 06:07:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,368 INFO L225 Difference]: With dead ends: 110 [2021-12-16 06:07:57,368 INFO L226 Difference]: Without dead ends: 108 [2021-12-16 06:07:57,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:57,369 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 41 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 156 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-16 06:07:57,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-16 06:07:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.086021505376344) internal successors, (101), 93 states have internal predecessors, (101), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-16 06:07:57,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2021-12-16 06:07:57,373 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 49 [2021-12-16 06:07:57,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,373 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2021-12-16 06:07:57,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2021-12-16 06:07:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-16 06:07:57,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 06:07:57,374 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash -870094681, now seen corresponding path program 1 times [2021-12-16 06:07:57,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637458854] [2021-12-16 06:07:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637458854] [2021-12-16 06:07:57,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637458854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:57,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778846448] [2021-12-16 06:07:57,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:57,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:57,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:57,445 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:57,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,500 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-12-16 06:07:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:57,501 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2021-12-16 06:07:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,502 INFO L225 Difference]: With dead ends: 108 [2021-12-16 06:07:57,502 INFO L226 Difference]: Without dead ends: 108 [2021-12-16 06:07:57,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:57,503 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 37 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 296 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-16 06:07:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-16 06:07:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.064516129032258) internal successors, (99), 93 states have internal predecessors, (99), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-16 06:07:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2021-12-16 06:07:57,506 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 50 [2021-12-16 06:07:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,507 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2021-12-16 06:07:57,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2021-12-16 06:07:57,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 06:07:57,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 06:07:57,508 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1424240836, now seen corresponding path program 1 times [2021-12-16 06:07:57,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177710366] [2021-12-16 06:07:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177710366] [2021-12-16 06:07:57,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177710366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:57,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386665397] [2021-12-16 06:07:57,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:57,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:57,610 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,677 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2021-12-16 06:07:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2021-12-16 06:07:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,679 INFO L225 Difference]: With dead ends: 108 [2021-12-16 06:07:57,679 INFO L226 Difference]: Without dead ends: 108 [2021-12-16 06:07:57,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:57,680 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 32 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 296 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-16 06:07:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-16 06:07:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.043010752688172) internal successors, (97), 93 states have internal predecessors, (97), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-16 06:07:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2021-12-16 06:07:57,683 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 51 [2021-12-16 06:07:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,683 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2021-12-16 06:07:57,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2021-12-16 06:07:57,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 06:07:57,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 06:07:57,685 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash -613501158, now seen corresponding path program 1 times [2021-12-16 06:07:57,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259708890] [2021-12-16 06:07:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 06:07:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259708890] [2021-12-16 06:07:57,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259708890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:57,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931922032] [2021-12-16 06:07:57,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:57,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:57,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:57,734 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,761 INFO L93 Difference]: Finished difference Result 83 states and 82 transitions. [2021-12-16 06:07:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:57,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-12-16 06:07:57,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,762 INFO L225 Difference]: With dead ends: 83 [2021-12-16 06:07:57,762 INFO L226 Difference]: Without dead ends: 0 [2021-12-16 06:07:57,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:57,763 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 116 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:57,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-16 06:07:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-16 06:07:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-16 06:07:57,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-12-16 06:07:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,764 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 06:07:57,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:07:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-16 06:07:57,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-16 06:07:57,767 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-16 06:07:57,767 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-16 06:07:57,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 06:07:57,770 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,772 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 06:07:57,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:07:57 BoogieIcfgContainer [2021-12-16 06:07:57,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 06:07:57,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 06:07:57,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 06:07:57,775 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 06:07:57,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:53" (3/4) ... [2021-12-16 06:07:57,777 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 06:07:57,784 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2021-12-16 06:07:57,784 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_CreateClose [2021-12-16 06:07:57,784 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-12-16 06:07:57,784 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-12-16 06:07:57,785 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_DispatchPassThrough [2021-12-16 06:07:57,785 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-12-16 06:07:57,785 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-12-16 06:07:57,795 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2021-12-16 06:07:57,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-12-16 06:07:57,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 06:07:57,798 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 06:07:57,890 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 06:07:57,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 06:07:57,891 INFO L158 Benchmark]: Toolchain (without parser) took 5637.99ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 56.8MB in the beginning and 81.7MB in the end (delta: -24.9MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2021-12-16 06:07:57,892 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory was 63.0MB in the beginning and 63.0MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 06:07:57,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.36ms. Allocated memory is still 92.3MB. Free memory was 56.6MB in the beginning and 60.5MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 06:07:57,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.73ms. Allocated memory is still 92.3MB. Free memory was 60.5MB in the beginning and 56.8MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 06:07:57,893 INFO L158 Benchmark]: Boogie Preprocessor took 74.18ms. Allocated memory is still 92.3MB. Free memory was 56.8MB in the beginning and 54.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 06:07:57,893 INFO L158 Benchmark]: RCFGBuilder took 796.60ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 54.2MB in the beginning and 86.2MB in the end (delta: -32.0MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-12-16 06:07:57,893 INFO L158 Benchmark]: TraceAbstraction took 4179.31ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 86.2MB in the beginning and 96.4MB in the end (delta: -10.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 06:07:57,893 INFO L158 Benchmark]: Witness Printer took 116.35ms. Allocated memory is still 146.8MB. Free memory was 96.4MB in the beginning and 81.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 06:07:57,895 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 92.3MB. Free memory was 63.0MB in the beginning and 63.0MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.36ms. Allocated memory is still 92.3MB. Free memory was 56.6MB in the beginning and 60.5MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.73ms. Allocated memory is still 92.3MB. Free memory was 60.5MB in the beginning and 56.8MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.18ms. Allocated memory is still 92.3MB. Free memory was 56.8MB in the beginning and 54.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 796.60ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 54.2MB in the beginning and 86.2MB in the end (delta: -32.0MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4179.31ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 86.2MB in the beginning and 96.4MB in the end (delta: -10.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 116.35ms. Allocated memory is still 146.8MB. Free memory was 96.4MB in the beginning and 81.7MB 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: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 295]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 209 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2899 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2869 mSDsluCounter, 8361 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4774 mSDsCounter, 375 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1691 IncrementalHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 375 mSolverCounterUnsat, 3587 mSDtfsCounter, 1691 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=297occurred in iteration=7, InterpolantAutomatonStates: 139, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 113 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 866 NumberOfCodeBlocks, 866 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 843 ConstructedInterpolants, 0 QuantifiedInterpolants, 2149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-16 06:07:57,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE