./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 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/diskperf_simpl1.cil.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 48b194ce99c1fa112b5c4d4ed6cc0216b9fbb33f6f6efd57d62e9c27b1f7eb5c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 16:47:15,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:47:15,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:47:15,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:47:15,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:47:15,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:47:15,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:47:15,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:47:15,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:47:15,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:47:15,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:47:15,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:47:15,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:47:15,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:47:15,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:47:15,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:47:15,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:47:15,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:47:15,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:47:15,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:47:15,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:47:15,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:47:15,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:47:15,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:47:15,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:47:15,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:47:15,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:47:15,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:47:15,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:47:15,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:47:15,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:47:15,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:47:15,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:47:15,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:47:15,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:47:15,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:47:15,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:47:15,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:47:15,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:47:15,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:47:15,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:47:15,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 16:47:15,391 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:47:15,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:47:15,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:47:15,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:47:15,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:47:15,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:47:15,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:47:15,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:47:15,394 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:47:15,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:47:15,395 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:47:15,395 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:47:15,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:47:15,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:47:15,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:47:15,396 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:47:15,396 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:47:15,396 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:47:15,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:47:15,397 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:47:15,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:47:15,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:47:15,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:47:15,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:47:15,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:47:15,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:47:15,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:47:15,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:47:15,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:47:15,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:47:15,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:47:15,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48b194ce99c1fa112b5c4d4ed6cc0216b9fbb33f6f6efd57d62e9c27b1f7eb5c [2021-12-22 16:47:15,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:47:15,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:47:15,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:47:15,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:47:15,654 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:47:15,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c [2021-12-22 16:47:15,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239af2121/e80a1c0ecca1477e8a7615e78bbb0939/FLAG84d5e9ab8 [2021-12-22 16:47:16,121 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:47:16,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c [2021-12-22 16:47:16,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239af2121/e80a1c0ecca1477e8a7615e78bbb0939/FLAG84d5e9ab8 [2021-12-22 16:47:16,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239af2121/e80a1c0ecca1477e8a7615e78bbb0939 [2021-12-22 16:47:16,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:47:16,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:47:16,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:47:16,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:47:16,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:47:16,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381ccedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16, skipping insertion in model container [2021-12-22 16:47:16,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:47:16,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:47:16,337 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/diskperf_simpl1.cil.c[2072,2085] [2021-12-22 16:47:16,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:47:16,445 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:47:16,458 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/diskperf_simpl1.cil.c[2072,2085] [2021-12-22 16:47:16,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:47:16,551 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:47:16,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16 WrapperNode [2021-12-22 16:47:16,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:47:16,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:47:16,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:47:16,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:47:16,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,635 INFO L137 Inliner]: procedures = 38, calls = 66, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 755 [2021-12-22 16:47:16,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:47:16,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:47:16,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:47:16,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:47:16,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:47:16,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:47:16,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:47:16,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:47:16,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (1/1) ... [2021-12-22 16:47:16,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:47:16,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:47:16,752 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) [2021-12-22 16:47:16,775 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 [2021-12-22 16:47:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 16:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-22 16:47:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-22 16:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-22 16:47:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-22 16:47:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-22 16:47:16,799 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-22 16:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2021-12-22 16:47:16,799 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2021-12-22 16:47:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2021-12-22 16:47:16,799 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2021-12-22 16:47:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-22 16:47:16,800 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-22 16:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 16:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-22 16:47:16,801 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-22 16:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2021-12-22 16:47:16,801 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2021-12-22 16:47:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2021-12-22 16:47:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2021-12-22 16:47:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:47:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:47:16,963 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:47:16,964 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:47:16,968 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 16:47:17,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-22 16:47:17,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-22 16:47:17,028 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 16:47:17,048 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-22 16:47:17,048 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-22 16:47:17,091 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 16:47:17,098 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 16:47:17,110 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 16:47:17,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2021-12-22 16:47:17,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2021-12-22 16:47:17,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-12-22 16:47:17,464 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-12-22 16:47:17,464 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume !false; [2021-12-22 16:47:17,464 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume false; [2021-12-22 16:47:17,465 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 16:47:17,484 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-22 16:47:17,484 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-22 16:47:17,513 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:47:17,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:47:17,521 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 16:47:17,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:47:17 BoogieIcfgContainer [2021-12-22 16:47:17,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:47:17,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:47:17,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:47:17,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:47:17,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:47:16" (1/3) ... [2021-12-22 16:47:17,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e964b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:47:17, skipping insertion in model container [2021-12-22 16:47:17,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:16" (2/3) ... [2021-12-22 16:47:17,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e964b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:47:17, skipping insertion in model container [2021-12-22 16:47:17,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:47:17" (3/3) ... [2021-12-22 16:47:17,530 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.c [2021-12-22 16:47:17,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:47:17,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 16:47:17,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:47:17,590 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 [2021-12-22 16:47:17,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 16:47:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 188 states have (on average 1.4734042553191489) internal successors, (277), 206 states have internal predecessors, (277), 44 states have call successors, (44), 9 states have call predecessors, (44), 9 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-22 16:47:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 16:47:17,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:17,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:17,628 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1705481022, now seen corresponding path program 1 times [2021-12-22 16:47:17,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:17,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809744548] [2021-12-22 16:47:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:17,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:17,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:17,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809744548] [2021-12-22 16:47:17,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809744548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:17,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:17,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:17,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144675219] [2021-12-22 16:47:17,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:17,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:17,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:17,855 INFO L87 Difference]: Start difference. First operand has 244 states, 188 states have (on average 1.4734042553191489) internal successors, (277), 206 states have internal predecessors, (277), 44 states have call successors, (44), 9 states have call predecessors, (44), 9 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) 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) [2021-12-22 16:47:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:17,958 INFO L93 Difference]: Finished difference Result 417 states and 600 transitions. [2021-12-22 16:47:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:17,961 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 [2021-12-22 16:47:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:17,972 INFO L225 Difference]: With dead ends: 417 [2021-12-22 16:47:17,974 INFO L226 Difference]: Without dead ends: 413 [2021-12-22 16:47:17,976 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 [2021-12-22 16:47:17,979 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 328 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:17,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 619 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-22 16:47:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 397. [2021-12-22 16:47:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 316 states have (on average 1.4398734177215189) internal successors, (455), 328 states have internal predecessors, (455), 63 states have call successors, (63), 16 states have call predecessors, (63), 16 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2021-12-22 16:47:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 579 transitions. [2021-12-22 16:47:18,074 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 579 transitions. Word has length 8 [2021-12-22 16:47:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:18,074 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 579 transitions. [2021-12-22 16:47:18,074 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) [2021-12-22 16:47:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 579 transitions. [2021-12-22 16:47:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:47:18,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:18,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:18,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 16:47:18,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1322410939, now seen corresponding path program 1 times [2021-12-22 16:47:18,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:18,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401827586] [2021-12-22 16:47:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:18,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:18,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:18,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401827586] [2021-12-22 16:47:18,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401827586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:18,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:18,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:47:18,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199711478] [2021-12-22 16:47:18,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:18,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:18,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:18,156 INFO L87 Difference]: Start difference. First operand 397 states and 579 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-22 16:47:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:18,218 INFO L93 Difference]: Finished difference Result 396 states and 578 transitions. [2021-12-22 16:47:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-12-22 16:47:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:18,223 INFO L225 Difference]: With dead ends: 396 [2021-12-22 16:47:18,224 INFO L226 Difference]: Without dead ends: 393 [2021-12-22 16:47:18,227 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 [2021-12-22 16:47:18,228 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 173 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:18,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 450 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-22 16:47:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-12-22 16:47:18,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 313 states have (on average 1.4089456869009584) internal successors, (441), 324 states have internal predecessors, (441), 63 states have call successors, (63), 16 states have call predecessors, (63), 16 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2021-12-22 16:47:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 565 transitions. [2021-12-22 16:47:18,256 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 565 transitions. Word has length 9 [2021-12-22 16:47:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:18,257 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 565 transitions. [2021-12-22 16:47:18,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-22 16:47:18,258 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 565 transitions. [2021-12-22 16:47:18,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 16:47:18,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:18,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:18,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 16:47:18,259 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1925745618, now seen corresponding path program 1 times [2021-12-22 16:47:18,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:18,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246813716] [2021-12-22 16:47:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:18,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:18,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:18,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246813716] [2021-12-22 16:47:18,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246813716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:18,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:18,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:18,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501989681] [2021-12-22 16:47:18,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:18,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:18,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:18,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:18,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:18,308 INFO L87 Difference]: Start difference. First operand 393 states and 565 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-22 16:47:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:18,364 INFO L93 Difference]: Finished difference Result 396 states and 567 transitions. [2021-12-22 16:47:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:18,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13 [2021-12-22 16:47:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:18,368 INFO L225 Difference]: With dead ends: 396 [2021-12-22 16:47:18,369 INFO L226 Difference]: Without dead ends: 393 [2021-12-22 16:47:18,369 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 [2021-12-22 16:47:18,375 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 0 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:18,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-22 16:47:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-12-22 16:47:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 313 states have (on average 1.4057507987220448) internal successors, (440), 324 states have internal predecessors, (440), 63 states have call successors, (63), 16 states have call predecessors, (63), 16 states have return successors, (61), 56 states have call predecessors, (61), 49 states have call successors, (61) [2021-12-22 16:47:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 564 transitions. [2021-12-22 16:47:18,396 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 564 transitions. Word has length 13 [2021-12-22 16:47:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:18,397 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 564 transitions. [2021-12-22 16:47:18,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-22 16:47:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 564 transitions. [2021-12-22 16:47:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 16:47:18,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:18,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:18,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 16:47:18,399 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1077867276, now seen corresponding path program 1 times [2021-12-22 16:47:18,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:18,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888077058] [2021-12-22 16:47:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:18,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:18,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:18,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888077058] [2021-12-22 16:47:18,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888077058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:18,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:18,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:18,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587041058] [2021-12-22 16:47:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:18,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:18,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:18,456 INFO L87 Difference]: Start difference. First operand 393 states and 564 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:47:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:18,559 INFO L93 Difference]: Finished difference Result 666 states and 990 transitions. [2021-12-22 16:47:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:18,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-22 16:47:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:18,563 INFO L225 Difference]: With dead ends: 666 [2021-12-22 16:47:18,563 INFO L226 Difference]: Without dead ends: 665 [2021-12-22 16:47:18,563 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 [2021-12-22 16:47:18,564 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 250 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:18,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 682 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:47:18,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-12-22 16:47:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 625. [2021-12-22 16:47:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 500 states have (on average 1.392) internal successors, (696), 503 states have internal predecessors, (696), 96 states have call successors, (96), 30 states have call predecessors, (96), 28 states have return successors, (148), 95 states have call predecessors, (148), 85 states have call successors, (148) [2021-12-22 16:47:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 940 transitions. [2021-12-22 16:47:18,584 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 940 transitions. Word has length 15 [2021-12-22 16:47:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:18,584 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 940 transitions. [2021-12-22 16:47:18,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:47:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 940 transitions. [2021-12-22 16:47:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 16:47:18,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:18,586 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] [2021-12-22 16:47:18,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 16:47:18,586 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash -291957618, now seen corresponding path program 1 times [2021-12-22 16:47:18,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:18,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884604852] [2021-12-22 16:47:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:18,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:18,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884604852] [2021-12-22 16:47:18,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884604852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:18,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:18,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:18,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582642389] [2021-12-22 16:47:18,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:18,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:18,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:18,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:18,631 INFO L87 Difference]: Start difference. First operand 625 states and 940 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:47:18,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:18,661 INFO L93 Difference]: Finished difference Result 949 states and 1438 transitions. [2021-12-22 16:47:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:18,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 16:47:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:18,671 INFO L225 Difference]: With dead ends: 949 [2021-12-22 16:47:18,671 INFO L226 Difference]: Without dead ends: 949 [2021-12-22 16:47:18,671 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 [2021-12-22 16:47:18,672 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 255 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 585 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 [2021-12-22 16:47:18,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 585 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-12-22 16:47:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 904. [2021-12-22 16:47:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 717 states have (on average 1.407252440725244) internal successors, (1009), 722 states have internal predecessors, (1009), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (231), 137 states have call predecessors, (231), 132 states have call successors, (231) [2021-12-22 16:47:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1382 transitions. [2021-12-22 16:47:18,716 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1382 transitions. Word has length 20 [2021-12-22 16:47:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:18,716 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1382 transitions. [2021-12-22 16:47:18,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:47:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1382 transitions. [2021-12-22 16:47:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 16:47:18,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:18,718 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] [2021-12-22 16:47:18,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 16:47:18,718 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash -175921107, now seen corresponding path program 1 times [2021-12-22 16:47:18,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:18,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326729463] [2021-12-22 16:47:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:18,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:18,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:18,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326729463] [2021-12-22 16:47:18,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326729463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:18,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:18,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:18,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994542735] [2021-12-22 16:47:18,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:18,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:18,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:18,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:18,755 INFO L87 Difference]: Start difference. First operand 904 states and 1382 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-12-22 16:47:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:18,806 INFO L93 Difference]: Finished difference Result 915 states and 1397 transitions. [2021-12-22 16:47:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:18,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 24 [2021-12-22 16:47:18,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:18,812 INFO L225 Difference]: With dead ends: 915 [2021-12-22 16:47:18,812 INFO L226 Difference]: Without dead ends: 915 [2021-12-22 16:47:18,812 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 [2021-12-22 16:47:18,813 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 21 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:18,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 557 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-12-22 16:47:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 914. [2021-12-22 16:47:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 728 states have (on average 1.4052197802197801) internal successors, (1023), 731 states have internal predecessors, (1023), 141 states have call successors, (141), 47 states have call predecessors, (141), 44 states have return successors, (231), 137 states have call predecessors, (231), 132 states have call successors, (231) [2021-12-22 16:47:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1395 transitions. [2021-12-22 16:47:18,851 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1395 transitions. Word has length 24 [2021-12-22 16:47:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:18,852 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 1395 transitions. [2021-12-22 16:47:18,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-12-22 16:47:18,852 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1395 transitions. [2021-12-22 16:47:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 16:47:18,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:18,854 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] [2021-12-22 16:47:18,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 16:47:18,854 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:18,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:18,855 INFO L85 PathProgramCache]: Analyzing trace with hash 9760830, now seen corresponding path program 1 times [2021-12-22 16:47:18,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:18,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685850700] [2021-12-22 16:47:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:18,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 16:47:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:18,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:18,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685850700] [2021-12-22 16:47:18,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685850700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:18,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:18,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:47:18,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421754135] [2021-12-22 16:47:18,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:18,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:47:18,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:47:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:47:18,908 INFO L87 Difference]: Start difference. First operand 914 states and 1395 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-12-22 16:47:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:19,121 INFO L93 Difference]: Finished difference Result 974 states and 1486 transitions. [2021-12-22 16:47:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:47:19,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 27 [2021-12-22 16:47:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:19,127 INFO L225 Difference]: With dead ends: 974 [2021-12-22 16:47:19,127 INFO L226 Difference]: Without dead ends: 974 [2021-12-22 16:47:19,128 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 [2021-12-22 16:47:19,129 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 100 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:19,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 673 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-12-22 16:47:19,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 951. [2021-12-22 16:47:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 761 states have (on average 1.3955321944809462) internal successors, (1062), 768 states have internal predecessors, (1062), 141 states have call successors, (141), 47 states have call predecessors, (141), 48 states have return successors, (249), 137 states have call predecessors, (249), 132 states have call successors, (249) [2021-12-22 16:47:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1452 transitions. [2021-12-22 16:47:19,158 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1452 transitions. Word has length 27 [2021-12-22 16:47:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:19,159 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 1452 transitions. [2021-12-22 16:47:19,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-12-22 16:47:19,159 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1452 transitions. [2021-12-22 16:47:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 16:47:19,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:19,164 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] [2021-12-22 16:47:19,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 16:47:19,165 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:19,165 INFO L85 PathProgramCache]: Analyzing trace with hash 755665447, now seen corresponding path program 1 times [2021-12-22 16:47:19,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:19,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034937522] [2021-12-22 16:47:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:19,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:19,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 16:47:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:19,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:19,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034937522] [2021-12-22 16:47:19,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034937522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:19,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:19,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:47:19,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944123232] [2021-12-22 16:47:19,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:19,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:47:19,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:19,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:47:19,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:47:19,279 INFO L87 Difference]: Start difference. First operand 951 states and 1452 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-12-22 16:47:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:19,598 INFO L93 Difference]: Finished difference Result 974 states and 1484 transitions. [2021-12-22 16:47:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:47:19,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 28 [2021-12-22 16:47:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:19,604 INFO L225 Difference]: With dead ends: 974 [2021-12-22 16:47:19,604 INFO L226 Difference]: Without dead ends: 974 [2021-12-22 16:47:19,604 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 [2021-12-22 16:47:19,605 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 403 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:19,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 790 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-12-22 16:47:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 951. [2021-12-22 16:47:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 761 states have (on average 1.392904073587385) internal successors, (1060), 768 states have internal predecessors, (1060), 141 states have call successors, (141), 47 states have call predecessors, (141), 48 states have return successors, (249), 137 states have call predecessors, (249), 132 states have call successors, (249) [2021-12-22 16:47:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1450 transitions. [2021-12-22 16:47:19,633 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1450 transitions. Word has length 28 [2021-12-22 16:47:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:19,636 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 1450 transitions. [2021-12-22 16:47:19,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-12-22 16:47:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1450 transitions. [2021-12-22 16:47:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 16:47:19,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:19,637 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] [2021-12-22 16:47:19,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 16:47:19,638 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1062018506, now seen corresponding path program 1 times [2021-12-22 16:47:19,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:19,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031735214] [2021-12-22 16:47:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:19,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 16:47:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:19,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:19,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031735214] [2021-12-22 16:47:19,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031735214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:19,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:19,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:47:19,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90826263] [2021-12-22 16:47:19,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:19,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:47:19,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:19,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:47:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:47:19,713 INFO L87 Difference]: Start difference. First operand 951 states and 1450 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:20,000 INFO L93 Difference]: Finished difference Result 974 states and 1482 transitions. [2021-12-22 16:47:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:47:20,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-12-22 16:47:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:20,008 INFO L225 Difference]: With dead ends: 974 [2021-12-22 16:47:20,008 INFO L226 Difference]: Without dead ends: 974 [2021-12-22 16:47:20,009 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 [2021-12-22 16:47:20,011 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 401 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:20,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 791 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-12-22 16:47:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 951. [2021-12-22 16:47:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 761 states have (on average 1.390275952693824) internal successors, (1058), 768 states have internal predecessors, (1058), 141 states have call successors, (141), 47 states have call predecessors, (141), 48 states have return successors, (249), 137 states have call predecessors, (249), 132 states have call successors, (249) [2021-12-22 16:47:20,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1448 transitions. [2021-12-22 16:47:20,039 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1448 transitions. Word has length 29 [2021-12-22 16:47:20,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:20,040 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 1448 transitions. [2021-12-22 16:47:20,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:20,040 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1448 transitions. [2021-12-22 16:47:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 16:47:20,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:20,041 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] [2021-12-22 16:47:20,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 16:47:20,042 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:20,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1381771216, now seen corresponding path program 1 times [2021-12-22 16:47:20,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:20,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007979887] [2021-12-22 16:47:20,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:20,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:20,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 16:47:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:20,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:20,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007979887] [2021-12-22 16:47:20,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007979887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:20,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:20,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:47:20,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115513567] [2021-12-22 16:47:20,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:20,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:47:20,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:47:20,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:47:20,103 INFO L87 Difference]: Start difference. First operand 951 states and 1448 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:20,279 INFO L93 Difference]: Finished difference Result 984 states and 1493 transitions. [2021-12-22 16:47:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:47:20,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-22 16:47:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:20,283 INFO L225 Difference]: With dead ends: 984 [2021-12-22 16:47:20,284 INFO L226 Difference]: Without dead ends: 968 [2021-12-22 16:47:20,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:47:20,285 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 84 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:20,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1008 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-12-22 16:47:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 947. [2021-12-22 16:47:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 758 states have (on average 1.3905013192612137) internal successors, (1054), 765 states have internal predecessors, (1054), 140 states have call successors, (140), 47 states have call predecessors, (140), 48 states have return successors, (248), 136 states have call predecessors, (248), 131 states have call successors, (248) [2021-12-22 16:47:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1442 transitions. [2021-12-22 16:47:20,314 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1442 transitions. Word has length 30 [2021-12-22 16:47:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:20,314 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 1442 transitions. [2021-12-22 16:47:20,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:20,314 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1442 transitions. [2021-12-22 16:47:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 16:47:20,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:20,315 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] [2021-12-22 16:47:20,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 16:47:20,316 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1269800431, now seen corresponding path program 1 times [2021-12-22 16:47:20,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:20,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930183682] [2021-12-22 16:47:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:20,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:20,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:20,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930183682] [2021-12-22 16:47:20,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930183682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:20,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:20,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:47:20,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364662945] [2021-12-22 16:47:20,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:20,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:47:20,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:47:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:47:20,381 INFO L87 Difference]: Start difference. First operand 947 states and 1442 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) [2021-12-22 16:47:20,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:20,589 INFO L93 Difference]: Finished difference Result 997 states and 1505 transitions. [2021-12-22 16:47:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:47:20,590 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 [2021-12-22 16:47:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:20,594 INFO L225 Difference]: With dead ends: 997 [2021-12-22 16:47:20,594 INFO L226 Difference]: Without dead ends: 966 [2021-12-22 16:47:20,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:47:20,595 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 113 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:20,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1243 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:20,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-12-22 16:47:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 945. [2021-12-22 16:47:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 757 states have (on average 1.3883751651254954) internal successors, (1051), 764 states have internal predecessors, (1051), 139 states have call successors, (139), 47 states have call predecessors, (139), 48 states have return successors, (247), 135 states have call predecessors, (247), 130 states have call successors, (247) [2021-12-22 16:47:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1437 transitions. [2021-12-22 16:47:20,619 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1437 transitions. Word has length 34 [2021-12-22 16:47:20,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:20,620 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 1437 transitions. [2021-12-22 16:47:20,620 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) [2021-12-22 16:47:20,620 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1437 transitions. [2021-12-22 16:47:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 16:47:20,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:20,621 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] [2021-12-22 16:47:20,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 16:47:20,622 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash 282504272, now seen corresponding path program 1 times [2021-12-22 16:47:20,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:20,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147793319] [2021-12-22 16:47:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:20,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:47:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:20,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:20,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147793319] [2021-12-22 16:47:20,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147793319] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:20,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:20,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:47:20,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803969218] [2021-12-22 16:47:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:20,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:47:20,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:47:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:47:20,672 INFO L87 Difference]: Start difference. First operand 945 states and 1437 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 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) [2021-12-22 16:47:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:21,040 INFO L93 Difference]: Finished difference Result 1436 states and 2280 transitions. [2021-12-22 16:47:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:47:21,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 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 [2021-12-22 16:47:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:21,051 INFO L225 Difference]: With dead ends: 1436 [2021-12-22 16:47:21,051 INFO L226 Difference]: Without dead ends: 1436 [2021-12-22 16:47:21,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:47:21,053 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 276 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:21,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 736 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-12-22 16:47:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1012. [2021-12-22 16:47:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 811 states have (on average 1.3834771886559802) internal successors, (1122), 821 states have internal predecessors, (1122), 146 states have call successors, (146), 49 states have call predecessors, (146), 54 states have return successors, (276), 143 states have call predecessors, (276), 137 states have call successors, (276) [2021-12-22 16:47:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1544 transitions. [2021-12-22 16:47:21,091 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1544 transitions. Word has length 34 [2021-12-22 16:47:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:21,091 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 1544 transitions. [2021-12-22 16:47:21,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 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) [2021-12-22 16:47:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1544 transitions. [2021-12-22 16:47:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 16:47:21,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:21,093 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] [2021-12-22 16:47:21,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 16:47:21,093 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:21,094 INFO L85 PathProgramCache]: Analyzing trace with hash 621054387, now seen corresponding path program 1 times [2021-12-22 16:47:21,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:21,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378741203] [2021-12-22 16:47:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:21,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:47:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:21,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378741203] [2021-12-22 16:47:21,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378741203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:21,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:21,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:47:21,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757640292] [2021-12-22 16:47:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:21,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:47:21,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:47:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:47:21,162 INFO L87 Difference]: Start difference. First operand 1012 states and 1544 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 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) [2021-12-22 16:47:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:21,534 INFO L93 Difference]: Finished difference Result 1074 states and 1632 transitions. [2021-12-22 16:47:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:47:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 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 [2021-12-22 16:47:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:21,540 INFO L225 Difference]: With dead ends: 1074 [2021-12-22 16:47:21,540 INFO L226 Difference]: Without dead ends: 1073 [2021-12-22 16:47:21,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:47:21,541 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 87 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:21,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1563 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-12-22 16:47:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1020. [2021-12-22 16:47:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 819 states have (on average 1.3821733821733821) internal successors, (1132), 829 states have internal predecessors, (1132), 146 states have call successors, (146), 49 states have call predecessors, (146), 54 states have return successors, (276), 143 states have call predecessors, (276), 137 states have call successors, (276) [2021-12-22 16:47:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1554 transitions. [2021-12-22 16:47:21,568 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1554 transitions. Word has length 35 [2021-12-22 16:47:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:21,568 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1554 transitions. [2021-12-22 16:47:21,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 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) [2021-12-22 16:47:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1554 transitions. [2021-12-22 16:47:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 16:47:21,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:21,570 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] [2021-12-22 16:47:21,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 16:47:21,570 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:21,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:21,571 INFO L85 PathProgramCache]: Analyzing trace with hash 620777557, now seen corresponding path program 1 times [2021-12-22 16:47:21,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:21,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698157105] [2021-12-22 16:47:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:21,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:47:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:21,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:21,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698157105] [2021-12-22 16:47:21,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698157105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:21,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:21,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:47:21,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478397987] [2021-12-22 16:47:21,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:21,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:47:21,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:21,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:47:21,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:47:21,637 INFO L87 Difference]: Start difference. First operand 1020 states and 1554 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 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) [2021-12-22 16:47:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:21,940 INFO L93 Difference]: Finished difference Result 1147 states and 1834 transitions. [2021-12-22 16:47:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:47:21,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 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 [2021-12-22 16:47:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:21,946 INFO L225 Difference]: With dead ends: 1147 [2021-12-22 16:47:21,946 INFO L226 Difference]: Without dead ends: 1134 [2021-12-22 16:47:21,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:21,947 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 96 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:21,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1752 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-12-22 16:47:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1038. [2021-12-22 16:47:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 836 states have (on average 1.3863636363636365) internal successors, (1159), 847 states have internal predecessors, (1159), 146 states have call successors, (146), 49 states have call predecessors, (146), 55 states have return successors, (295), 143 states have call predecessors, (295), 137 states have call successors, (295) [2021-12-22 16:47:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1600 transitions. [2021-12-22 16:47:21,975 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1600 transitions. Word has length 35 [2021-12-22 16:47:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:21,976 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1600 transitions. [2021-12-22 16:47:21,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 6 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) [2021-12-22 16:47:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1600 transitions. [2021-12-22 16:47:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 16:47:21,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:21,977 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] [2021-12-22 16:47:21,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 16:47:21,978 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1299938929, now seen corresponding path program 1 times [2021-12-22 16:47:21,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:21,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431675532] [2021-12-22 16:47:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:21,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:22,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:22,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431675532] [2021-12-22 16:47:22,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431675532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:22,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:22,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:47:22,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136491930] [2021-12-22 16:47:22,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:22,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:47:22,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:47:22,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:47:22,007 INFO L87 Difference]: Start difference. First operand 1038 states and 1600 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) [2021-12-22 16:47:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:22,134 INFO L93 Difference]: Finished difference Result 1047 states and 1605 transitions. [2021-12-22 16:47:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:47:22,134 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 [2021-12-22 16:47:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:22,140 INFO L225 Difference]: With dead ends: 1047 [2021-12-22 16:47:22,140 INFO L226 Difference]: Without dead ends: 1047 [2021-12-22 16:47:22,141 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 [2021-12-22 16:47:22,143 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 312 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:22,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 470 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:47:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-12-22 16:47:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1032. [2021-12-22 16:47:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 830 states have (on average 1.3855421686746987) internal successors, (1150), 842 states have internal predecessors, (1150), 146 states have call successors, (146), 49 states have call predecessors, (146), 55 states have return successors, (293), 142 states have call predecessors, (293), 137 states have call successors, (293) [2021-12-22 16:47:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1589 transitions. [2021-12-22 16:47:22,171 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1589 transitions. Word has length 34 [2021-12-22 16:47:22,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:22,171 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 1589 transitions. [2021-12-22 16:47:22,171 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) [2021-12-22 16:47:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1589 transitions. [2021-12-22 16:47:22,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 16:47:22,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:22,173 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] [2021-12-22 16:47:22,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 16:47:22,173 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2068890717, now seen corresponding path program 1 times [2021-12-22 16:47:22,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:22,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967855322] [2021-12-22 16:47:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:22,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:22,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:47:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:22,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:22,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967855322] [2021-12-22 16:47:22,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967855322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:22,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:22,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:47:22,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080119722] [2021-12-22 16:47:22,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:22,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:47:22,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:47:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:47:22,260 INFO L87 Difference]: Start difference. First operand 1032 states and 1589 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-12-22 16:47:22,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:22,820 INFO L93 Difference]: Finished difference Result 1482 states and 2371 transitions. [2021-12-22 16:47:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:47:22,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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 36 [2021-12-22 16:47:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:22,830 INFO L225 Difference]: With dead ends: 1482 [2021-12-22 16:47:22,830 INFO L226 Difference]: Without dead ends: 1469 [2021-12-22 16:47:22,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:22,831 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 758 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:22,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 841 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 16:47:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-12-22 16:47:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1019. [2021-12-22 16:47:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 819 states have (on average 1.387057387057387) internal successors, (1136), 830 states have internal predecessors, (1136), 145 states have call successors, (145), 49 states have call predecessors, (145), 54 states have return successors, (274), 141 states have call predecessors, (274), 136 states have call successors, (274) [2021-12-22 16:47:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1555 transitions. [2021-12-22 16:47:22,872 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1555 transitions. Word has length 36 [2021-12-22 16:47:22,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:22,873 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1555 transitions. [2021-12-22 16:47:22,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-12-22 16:47:22,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1555 transitions. [2021-12-22 16:47:22,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 16:47:22,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:22,874 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] [2021-12-22 16:47:22,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 16:47:22,874 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash 661355935, now seen corresponding path program 1 times [2021-12-22 16:47:22,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:22,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189635102] [2021-12-22 16:47:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:22,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:47:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:22,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:22,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189635102] [2021-12-22 16:47:22,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189635102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:22,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:22,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:47:22,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636647032] [2021-12-22 16:47:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:22,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:47:22,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:47:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:47:22,913 INFO L87 Difference]: Start difference. First operand 1019 states and 1555 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:23,161 INFO L93 Difference]: Finished difference Result 723 states and 1044 transitions. [2021-12-22 16:47:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:47:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-22 16:47:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:23,165 INFO L225 Difference]: With dead ends: 723 [2021-12-22 16:47:23,165 INFO L226 Difference]: Without dead ends: 723 [2021-12-22 16:47:23,165 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 [2021-12-22 16:47:23,166 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 378 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:23,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 714 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-12-22 16:47:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 650. [2021-12-22 16:47:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 527 states have (on average 1.3529411764705883) internal successors, (713), 537 states have internal predecessors, (713), 87 states have call successors, (87), 33 states have call predecessors, (87), 35 states have return successors, (143), 81 states have call predecessors, (143), 78 states have call successors, (143) [2021-12-22 16:47:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 943 transitions. [2021-12-22 16:47:23,181 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 943 transitions. Word has length 38 [2021-12-22 16:47:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:23,182 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 943 transitions. [2021-12-22 16:47:23,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 943 transitions. [2021-12-22 16:47:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 16:47:23,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:23,183 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] [2021-12-22 16:47:23,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 16:47:23,183 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1922765743, now seen corresponding path program 1 times [2021-12-22 16:47:23,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:23,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138746978] [2021-12-22 16:47:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:23,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:23,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:23,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138746978] [2021-12-22 16:47:23,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138746978] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:23,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:23,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:23,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259255371] [2021-12-22 16:47:23,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:23,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:23,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:23,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:23,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:23,208 INFO L87 Difference]: Start difference. First operand 650 states and 943 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-12-22 16:47:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:23,278 INFO L93 Difference]: Finished difference Result 916 states and 1387 transitions. [2021-12-22 16:47:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 35 [2021-12-22 16:47:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:23,283 INFO L225 Difference]: With dead ends: 916 [2021-12-22 16:47:23,283 INFO L226 Difference]: Without dead ends: 916 [2021-12-22 16:47:23,283 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 [2021-12-22 16:47:23,284 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 183 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:23,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 715 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:47:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-12-22 16:47:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 666. [2021-12-22 16:47:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 542 states have (on average 1.345018450184502) internal successors, (729), 552 states have internal predecessors, (729), 87 states have call successors, (87), 33 states have call predecessors, (87), 36 states have return successors, (144), 82 states have call predecessors, (144), 78 states have call successors, (144) [2021-12-22 16:47:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 960 transitions. [2021-12-22 16:47:23,305 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 960 transitions. Word has length 35 [2021-12-22 16:47:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:23,305 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 960 transitions. [2021-12-22 16:47:23,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-12-22 16:47:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 960 transitions. [2021-12-22 16:47:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 16:47:23,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:23,306 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] [2021-12-22 16:47:23,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 16:47:23,307 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:23,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1798212433, now seen corresponding path program 1 times [2021-12-22 16:47:23,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:23,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592638919] [2021-12-22 16:47:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:23,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:23,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:23,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592638919] [2021-12-22 16:47:23,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592638919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:23,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:23,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:47:23,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814808690] [2021-12-22 16:47:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:23,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:47:23,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:47:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:47:23,345 INFO L87 Difference]: Start difference. First operand 666 states and 960 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-12-22 16:47:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:23,447 INFO L93 Difference]: Finished difference Result 644 states and 929 transitions. [2021-12-22 16:47:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:47:23,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 35 [2021-12-22 16:47:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:23,451 INFO L225 Difference]: With dead ends: 644 [2021-12-22 16:47:23,451 INFO L226 Difference]: Without dead ends: 644 [2021-12-22 16:47:23,451 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 [2021-12-22 16:47:23,452 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 291 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:23,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 463 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:47:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-12-22 16:47:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2021-12-22 16:47:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 520 states have (on average 1.3423076923076922) internal successors, (698), 529 states have internal predecessors, (698), 86 states have call successors, (86), 33 states have call predecessors, (86), 35 states have return successors, (143), 81 states have call predecessors, (143), 78 states have call successors, (143) [2021-12-22 16:47:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 927 transitions. [2021-12-22 16:47:23,474 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 927 transitions. Word has length 35 [2021-12-22 16:47:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:23,474 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 927 transitions. [2021-12-22 16:47:23,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-12-22 16:47:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 927 transitions. [2021-12-22 16:47:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 16:47:23,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:23,475 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] [2021-12-22 16:47:23,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 16:47:23,476 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash 734679029, now seen corresponding path program 1 times [2021-12-22 16:47:23,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:23,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585316418] [2021-12-22 16:47:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:23,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:23,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:23,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585316418] [2021-12-22 16:47:23,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585316418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:23,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:23,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:47:23,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816189148] [2021-12-22 16:47:23,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:23,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:47:23,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:23,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:47:23,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:47:23,532 INFO L87 Difference]: Start difference. First operand 642 states and 927 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-12-22 16:47:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:23,824 INFO L93 Difference]: Finished difference Result 698 states and 1010 transitions. [2021-12-22 16:47:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:47:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 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 37 [2021-12-22 16:47:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:23,827 INFO L225 Difference]: With dead ends: 698 [2021-12-22 16:47:23,827 INFO L226 Difference]: Without dead ends: 670 [2021-12-22 16:47:23,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:47:23,828 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 83 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:23,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1519 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-22 16:47:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 615. [2021-12-22 16:47:23,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 495 states have (on average 1.3494949494949495) internal successors, (668), 504 states have internal predecessors, (668), 85 states have call successors, (85), 32 states have call predecessors, (85), 34 states have return successors, (142), 80 states have call predecessors, (142), 77 states have call successors, (142) [2021-12-22 16:47:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 895 transitions. [2021-12-22 16:47:23,843 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 895 transitions. Word has length 37 [2021-12-22 16:47:23,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:23,843 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 895 transitions. [2021-12-22 16:47:23,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-12-22 16:47:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 895 transitions. [2021-12-22 16:47:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 16:47:23,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:23,845 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] [2021-12-22 16:47:23,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 16:47:23,845 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash -70447564, now seen corresponding path program 1 times [2021-12-22 16:47:23,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045154675] [2021-12-22 16:47:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:23,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:23,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:23,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045154675] [2021-12-22 16:47:23,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045154675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:23,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:23,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:47:23,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020483138] [2021-12-22 16:47:23,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:23,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 16:47:23,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 16:47:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:47:23,919 INFO L87 Difference]: Start difference. First operand 615 states and 895 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-12-22 16:47:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:23,987 INFO L93 Difference]: Finished difference Result 632 states and 912 transitions. [2021-12-22 16:47:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:47:23,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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 36 [2021-12-22 16:47:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:23,989 INFO L225 Difference]: With dead ends: 632 [2021-12-22 16:47:23,990 INFO L226 Difference]: Without dead ends: 614 [2021-12-22 16:47:23,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:47:23,991 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 43 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:23,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 1597 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-22 16:47:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2021-12-22 16:47:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 494 states have (on average 1.3481781376518218) internal successors, (666), 503 states have internal predecessors, (666), 85 states have call successors, (85), 32 states have call predecessors, (85), 34 states have return successors, (142), 80 states have call predecessors, (142), 77 states have call successors, (142) [2021-12-22 16:47:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 893 transitions. [2021-12-22 16:47:24,005 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 893 transitions. Word has length 36 [2021-12-22 16:47:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:24,005 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 893 transitions. [2021-12-22 16:47:24,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-12-22 16:47:24,006 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 893 transitions. [2021-12-22 16:47:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 16:47:24,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:24,006 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] [2021-12-22 16:47:24,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 16:47:24,007 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1099539614, now seen corresponding path program 1 times [2021-12-22 16:47:24,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:24,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379840288] [2021-12-22 16:47:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:24,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 16:47:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:24,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:24,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379840288] [2021-12-22 16:47:24,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379840288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:24,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:24,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:47:24,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139049542] [2021-12-22 16:47:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:24,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:47:24,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:47:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:47:24,051 INFO L87 Difference]: Start difference. First operand 614 states and 893 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:24,209 INFO L93 Difference]: Finished difference Result 653 states and 948 transitions. [2021-12-22 16:47:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:47:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-22 16:47:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:24,213 INFO L225 Difference]: With dead ends: 653 [2021-12-22 16:47:24,213 INFO L226 Difference]: Without dead ends: 626 [2021-12-22 16:47:24,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:47:24,215 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 98 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:24,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 1143 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:47:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-12-22 16:47:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 599. [2021-12-22 16:47:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 481 states have (on average 1.3534303534303533) internal successors, (651), 490 states have internal predecessors, (651), 84 states have call successors, (84), 31 states have call predecessors, (84), 33 states have return successors, (141), 79 states have call predecessors, (141), 76 states have call successors, (141) [2021-12-22 16:47:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 876 transitions. [2021-12-22 16:47:24,228 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 876 transitions. Word has length 38 [2021-12-22 16:47:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:24,228 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 876 transitions. [2021-12-22 16:47:24,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 876 transitions. [2021-12-22 16:47:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 16:47:24,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:24,229 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] [2021-12-22 16:47:24,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 16:47:24,230 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash 233678839, now seen corresponding path program 1 times [2021-12-22 16:47:24,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:24,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087407355] [2021-12-22 16:47:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:24,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:24,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087407355] [2021-12-22 16:47:24,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087407355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:24,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:24,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:47:24,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227195193] [2021-12-22 16:47:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:24,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:47:24,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:24,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:47:24,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:47:24,309 INFO L87 Difference]: Start difference. First operand 599 states and 876 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-22 16:47:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:24,380 INFO L93 Difference]: Finished difference Result 611 states and 889 transitions. [2021-12-22 16:47:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:47:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 37 [2021-12-22 16:47:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:24,383 INFO L225 Difference]: With dead ends: 611 [2021-12-22 16:47:24,383 INFO L226 Difference]: Without dead ends: 610 [2021-12-22 16:47:24,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:47:24,384 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 46 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:24,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1234 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-12-22 16:47:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 606. [2021-12-22 16:47:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 488 states have (on average 1.3504098360655739) internal successors, (659), 497 states have internal predecessors, (659), 84 states have call successors, (84), 31 states have call predecessors, (84), 33 states have return successors, (141), 79 states have call predecessors, (141), 76 states have call successors, (141) [2021-12-22 16:47:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 884 transitions. [2021-12-22 16:47:24,396 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 884 transitions. Word has length 37 [2021-12-22 16:47:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:24,397 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 884 transitions. [2021-12-22 16:47:24,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-22 16:47:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 884 transitions. [2021-12-22 16:47:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 16:47:24,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:24,398 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] [2021-12-22 16:47:24,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 16:47:24,398 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:24,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 233402009, now seen corresponding path program 1 times [2021-12-22 16:47:24,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:24,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618721933] [2021-12-22 16:47:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:24,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:24,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:24,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618721933] [2021-12-22 16:47:24,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618721933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:24,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:24,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:47:24,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510247888] [2021-12-22 16:47:24,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:24,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:47:24,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:47:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:47:24,435 INFO L87 Difference]: Start difference. First operand 606 states and 884 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-12-22 16:47:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:24,606 INFO L93 Difference]: Finished difference Result 852 states and 1305 transitions. [2021-12-22 16:47:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:47:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 37 [2021-12-22 16:47:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:24,610 INFO L225 Difference]: With dead ends: 852 [2021-12-22 16:47:24,610 INFO L226 Difference]: Without dead ends: 827 [2021-12-22 16:47:24,610 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 [2021-12-22 16:47:24,611 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 392 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:24,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 578 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-12-22 16:47:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 583. [2021-12-22 16:47:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 465 states have (on average 1.3591397849462366) internal successors, (632), 474 states have internal predecessors, (632), 84 states have call successors, (84), 31 states have call predecessors, (84), 33 states have return successors, (141), 79 states have call predecessors, (141), 76 states have call successors, (141) [2021-12-22 16:47:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 857 transitions. [2021-12-22 16:47:24,627 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 857 transitions. Word has length 37 [2021-12-22 16:47:24,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:24,627 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 857 transitions. [2021-12-22 16:47:24,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-12-22 16:47:24,627 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 857 transitions. [2021-12-22 16:47:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 16:47:24,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:24,628 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] [2021-12-22 16:47:24,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 16:47:24,628 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1478054632, now seen corresponding path program 1 times [2021-12-22 16:47:24,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:24,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013743357] [2021-12-22 16:47:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:24,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 16:47:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:24,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 16:47:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:24,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:24,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013743357] [2021-12-22 16:47:24,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013743357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:24,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:47:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169210662] [2021-12-22 16:47:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:24,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:47:24,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:47:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:47:24,666 INFO L87 Difference]: Start difference. First operand 583 states and 857 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 16:47:24,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:24,849 INFO L93 Difference]: Finished difference Result 726 states and 1109 transitions. [2021-12-22 16:47:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:47:24,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-22 16:47:24,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:24,853 INFO L225 Difference]: With dead ends: 726 [2021-12-22 16:47:24,853 INFO L226 Difference]: Without dead ends: 726 [2021-12-22 16:47:24,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:47:24,854 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 173 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:24,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 747 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:24,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-12-22 16:47:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 645. [2021-12-22 16:47:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 523 states have (on average 1.3652007648183557) internal successors, (714), 533 states have internal predecessors, (714), 86 states have call successors, (86), 31 states have call predecessors, (86), 35 states have return successors, (159), 80 states have call predecessors, (159), 78 states have call successors, (159) [2021-12-22 16:47:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 959 transitions. [2021-12-22 16:47:24,869 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 959 transitions. Word has length 43 [2021-12-22 16:47:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:24,869 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 959 transitions. [2021-12-22 16:47:24,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 16:47:24,870 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 959 transitions. [2021-12-22 16:47:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 16:47:24,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:24,871 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] [2021-12-22 16:47:24,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 16:47:24,871 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash -268012581, now seen corresponding path program 1 times [2021-12-22 16:47:24,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:24,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375481605] [2021-12-22 16:47:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:24,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 16:47:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:25,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:25,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375481605] [2021-12-22 16:47:25,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375481605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:25,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:25,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 16:47:25,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742650739] [2021-12-22 16:47:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:25,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:47:25,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:47:25,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:47:25,015 INFO L87 Difference]: Start difference. First operand 645 states and 959 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:25,415 INFO L93 Difference]: Finished difference Result 749 states and 1158 transitions. [2021-12-22 16:47:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 16:47:25,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-22 16:47:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:25,418 INFO L225 Difference]: With dead ends: 749 [2021-12-22 16:47:25,418 INFO L226 Difference]: Without dead ends: 729 [2021-12-22 16:47:25,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-22 16:47:25,419 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 102 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:25,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1398 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-12-22 16:47:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 644. [2021-12-22 16:47:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 522 states have (on average 1.3639846743295019) internal successors, (712), 532 states have internal predecessors, (712), 86 states have call successors, (86), 31 states have call predecessors, (86), 35 states have return successors, (159), 80 states have call predecessors, (159), 78 states have call successors, (159) [2021-12-22 16:47:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 957 transitions. [2021-12-22 16:47:25,435 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 957 transitions. Word has length 43 [2021-12-22 16:47:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:25,436 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 957 transitions. [2021-12-22 16:47:25,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 957 transitions. [2021-12-22 16:47:25,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 16:47:25,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:25,437 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] [2021-12-22 16:47:25,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 16:47:25,437 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1845246895, now seen corresponding path program 1 times [2021-12-22 16:47:25,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:25,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567346790] [2021-12-22 16:47:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:25,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 16:47:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:25,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:25,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567346790] [2021-12-22 16:47:25,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567346790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:25,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:25,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 16:47:25,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025490517] [2021-12-22 16:47:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:25,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:47:25,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:47:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:47:25,499 INFO L87 Difference]: Start difference. First operand 644 states and 957 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 16:47:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:25,835 INFO L93 Difference]: Finished difference Result 815 states and 1297 transitions. [2021-12-22 16:47:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 16:47:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-22 16:47:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:25,839 INFO L225 Difference]: With dead ends: 815 [2021-12-22 16:47:25,839 INFO L226 Difference]: Without dead ends: 815 [2021-12-22 16:47:25,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-22 16:47:25,840 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 129 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:25,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1370 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-12-22 16:47:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 668. [2021-12-22 16:47:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 542 states have (on average 1.3542435424354244) internal successors, (734), 552 states have internal predecessors, (734), 86 states have call successors, (86), 31 states have call predecessors, (86), 39 states have return successors, (211), 84 states have call predecessors, (211), 78 states have call successors, (211) [2021-12-22 16:47:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1031 transitions. [2021-12-22 16:47:25,859 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1031 transitions. Word has length 48 [2021-12-22 16:47:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:25,860 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1031 transitions. [2021-12-22 16:47:25,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 16:47:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1031 transitions. [2021-12-22 16:47:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-22 16:47:25,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:25,861 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] [2021-12-22 16:47:25,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 16:47:25,861 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:25,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash -615366385, now seen corresponding path program 1 times [2021-12-22 16:47:25,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:25,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815435901] [2021-12-22 16:47:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:25,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 16:47:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:25,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:25,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815435901] [2021-12-22 16:47:25,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815435901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:25,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:25,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 16:47:25,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337559809] [2021-12-22 16:47:25,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:25,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:47:25,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:47:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:47:25,958 INFO L87 Difference]: Start difference. First operand 668 states and 1031 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:26,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:26,358 INFO L93 Difference]: Finished difference Result 726 states and 1118 transitions. [2021-12-22 16:47:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:47:26,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-22 16:47:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:26,362 INFO L225 Difference]: With dead ends: 726 [2021-12-22 16:47:26,362 INFO L226 Difference]: Without dead ends: 696 [2021-12-22 16:47:26,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:47:26,363 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 91 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:26,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 1364 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 16:47:26,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-12-22 16:47:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 637. [2021-12-22 16:47:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 514 states have (on average 1.367704280155642) internal successors, (703), 523 states have internal predecessors, (703), 84 states have call successors, (84), 30 states have call predecessors, (84), 38 states have return successors, (210), 83 states have call predecessors, (210), 77 states have call successors, (210) [2021-12-22 16:47:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 997 transitions. [2021-12-22 16:47:26,377 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 997 transitions. Word has length 44 [2021-12-22 16:47:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:26,377 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 997 transitions. [2021-12-22 16:47:26,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 16:47:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 997 transitions. [2021-12-22 16:47:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 16:47:26,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:26,378 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] [2021-12-22 16:47:26,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 16:47:26,379 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:26,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1448694147, now seen corresponding path program 1 times [2021-12-22 16:47:26,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:26,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641821957] [2021-12-22 16:47:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:26,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:26,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:47:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:26,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:26,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641821957] [2021-12-22 16:47:26,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641821957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:26,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:26,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:47:26,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198709802] [2021-12-22 16:47:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:26,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:47:26,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:47:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:47:26,422 INFO L87 Difference]: Start difference. First operand 637 states and 997 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 16:47:26,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:26,694 INFO L93 Difference]: Finished difference Result 1213 states and 2011 transitions. [2021-12-22 16:47:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:47:26,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-22 16:47:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:26,701 INFO L225 Difference]: With dead ends: 1213 [2021-12-22 16:47:26,701 INFO L226 Difference]: Without dead ends: 1213 [2021-12-22 16:47:26,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:47:26,701 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 296 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:26,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 811 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-12-22 16:47:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 645. [2021-12-22 16:47:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 522 states have (on average 1.3697318007662835) internal successors, (715), 531 states have internal predecessors, (715), 84 states have call successors, (84), 30 states have call predecessors, (84), 38 states have return successors, (210), 83 states have call predecessors, (210), 77 states have call successors, (210) [2021-12-22 16:47:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1009 transitions. [2021-12-22 16:47:26,723 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1009 transitions. Word has length 48 [2021-12-22 16:47:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:26,723 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 1009 transitions. [2021-12-22 16:47:26,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 16:47:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1009 transitions. [2021-12-22 16:47:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 16:47:26,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:26,725 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] [2021-12-22 16:47:26,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 16:47:26,725 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:26,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:26,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1116153965, now seen corresponding path program 1 times [2021-12-22 16:47:26,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:26,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930041986] [2021-12-22 16:47:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:26,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 16:47:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:26,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:26,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930041986] [2021-12-22 16:47:26,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930041986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:26,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:26,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:47:26,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870101322] [2021-12-22 16:47:26,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:26,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:47:26,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:26,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:47:26,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:47:26,786 INFO L87 Difference]: Start difference. First operand 645 states and 1009 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 16:47:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:27,123 INFO L93 Difference]: Finished difference Result 1361 states and 2165 transitions. [2021-12-22 16:47:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:47:27,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2021-12-22 16:47:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:27,129 INFO L225 Difference]: With dead ends: 1361 [2021-12-22 16:47:27,129 INFO L226 Difference]: Without dead ends: 1361 [2021-12-22 16:47:27,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:47:27,129 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 306 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:27,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 735 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:27,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-12-22 16:47:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1197. [2021-12-22 16:47:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 973 states have (on average 1.381294964028777) internal successors, (1344), 993 states have internal predecessors, (1344), 148 states have call successors, (148), 56 states have call predecessors, (148), 75 states have return successors, (416), 147 states have call predecessors, (416), 141 states have call successors, (416) [2021-12-22 16:47:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1908 transitions. [2021-12-22 16:47:27,169 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1908 transitions. Word has length 50 [2021-12-22 16:47:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:27,169 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1908 transitions. [2021-12-22 16:47:27,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 16:47:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1908 transitions. [2021-12-22 16:47:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 16:47:27,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:27,171 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] [2021-12-22 16:47:27,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 16:47:27,171 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash 33672435, now seen corresponding path program 1 times [2021-12-22 16:47:27,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:27,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112898965] [2021-12-22 16:47:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:27,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:27,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:27,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112898965] [2021-12-22 16:47:27,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112898965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:27,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:27,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 16:47:27,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761402801] [2021-12-22 16:47:27,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:27,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:47:27,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:27,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:47:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:47:27,311 INFO L87 Difference]: Start difference. First operand 1197 states and 1908 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) [2021-12-22 16:47:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:27,661 INFO L93 Difference]: Finished difference Result 1236 states and 1967 transitions. [2021-12-22 16:47:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:47:27,661 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 [2021-12-22 16:47:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:27,665 INFO L225 Difference]: With dead ends: 1236 [2021-12-22 16:47:27,665 INFO L226 Difference]: Without dead ends: 1236 [2021-12-22 16:47:27,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:47:27,666 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 188 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:27,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 1200 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-12-22 16:47:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1145. [2021-12-22 16:47:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 921 states have (on average 1.3659066232356134) internal successors, (1258), 941 states have internal predecessors, (1258), 148 states have call successors, (148), 56 states have call predecessors, (148), 75 states have return successors, (416), 147 states have call predecessors, (416), 141 states have call successors, (416) [2021-12-22 16:47:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1822 transitions. [2021-12-22 16:47:27,693 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1822 transitions. Word has length 50 [2021-12-22 16:47:27,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:27,693 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 1822 transitions. [2021-12-22 16:47:27,694 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) [2021-12-22 16:47:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1822 transitions. [2021-12-22 16:47:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 16:47:27,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:27,695 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] [2021-12-22 16:47:27,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 16:47:27,695 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1244659166, now seen corresponding path program 1 times [2021-12-22 16:47:27,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48412671] [2021-12-22 16:47:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:27,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:47:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:27,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:27,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48412671] [2021-12-22 16:47:27,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48412671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:27,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:27,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:47:27,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462325642] [2021-12-22 16:47:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:27,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:47:27,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:27,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:47:27,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:47:27,746 INFO L87 Difference]: Start difference. First operand 1145 states and 1822 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:47:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:27,902 INFO L93 Difference]: Finished difference Result 332 states and 475 transitions. [2021-12-22 16:47:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:47:27,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2021-12-22 16:47:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:27,903 INFO L225 Difference]: With dead ends: 332 [2021-12-22 16:47:27,903 INFO L226 Difference]: Without dead ends: 332 [2021-12-22 16:47:27,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:47:27,905 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 246 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:27,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 405 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:47:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-12-22 16:47:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-12-22 16:47:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 260 states have (on average 1.273076923076923) internal successors, (331), 264 states have internal predecessors, (331), 50 states have call successors, (50), 17 states have call predecessors, (50), 21 states have return successors, (94), 50 states have call predecessors, (94), 47 states have call successors, (94) [2021-12-22 16:47:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 475 transitions. [2021-12-22 16:47:27,913 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 475 transitions. Word has length 49 [2021-12-22 16:47:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:27,914 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 475 transitions. [2021-12-22 16:47:27,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 16:47:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 475 transitions. [2021-12-22 16:47:27,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 16:47:27,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:27,915 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] [2021-12-22 16:47:27,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 16:47:27,915 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash 929022604, now seen corresponding path program 1 times [2021-12-22 16:47:27,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:27,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163366908] [2021-12-22 16:47:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:27,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:28,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:28,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163366908] [2021-12-22 16:47:28,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163366908] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:28,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 16:47:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320176159] [2021-12-22 16:47:28,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:28,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:47:28,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:28,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:47:28,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:47:28,037 INFO L87 Difference]: Start difference. First operand 332 states and 475 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 16:47:28,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:28,263 INFO L93 Difference]: Finished difference Result 327 states and 462 transitions. [2021-12-22 16:47:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:47:28,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2021-12-22 16:47:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:28,265 INFO L225 Difference]: With dead ends: 327 [2021-12-22 16:47:28,265 INFO L226 Difference]: Without dead ends: 327 [2021-12-22 16:47:28,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-12-22 16:47:28,266 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 233 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:28,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 626 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-22 16:47:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-12-22 16:47:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 256 states have (on average 1.26171875) internal successors, (323), 260 states have internal predecessors, (323), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (89), 49 states have call predecessors, (89), 47 states have call successors, (89) [2021-12-22 16:47:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 462 transitions. [2021-12-22 16:47:28,272 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 462 transitions. Word has length 54 [2021-12-22 16:47:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:28,273 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 462 transitions. [2021-12-22 16:47:28,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 16:47:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 462 transitions. [2021-12-22 16:47:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 16:47:28,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:28,274 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] [2021-12-22 16:47:28,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-22 16:47:28,274 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash 677437189, now seen corresponding path program 1 times [2021-12-22 16:47:28,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:28,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588743] [2021-12-22 16:47:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:28,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:28,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:28,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588743] [2021-12-22 16:47:28,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:28,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:28,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:47:28,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469470919] [2021-12-22 16:47:28,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:28,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 16:47:28,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 16:47:28,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:47:28,359 INFO L87 Difference]: Start difference. First operand 327 states and 462 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 16:47:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:28,496 INFO L93 Difference]: Finished difference Result 339 states and 485 transitions. [2021-12-22 16:47:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:47:28,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2021-12-22 16:47:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:28,497 INFO L225 Difference]: With dead ends: 339 [2021-12-22 16:47:28,498 INFO L226 Difference]: Without dead ends: 339 [2021-12-22 16:47:28,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:47:28,498 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 64 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:28,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 717 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:47:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-12-22 16:47:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 330. [2021-12-22 16:47:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 259 states have (on average 1.2586872586872586) internal successors, (326), 263 states have internal predecessors, (326), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (89), 49 states have call predecessors, (89), 47 states have call successors, (89) [2021-12-22 16:47:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 465 transitions. [2021-12-22 16:47:28,506 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 465 transitions. Word has length 57 [2021-12-22 16:47:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:28,506 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 465 transitions. [2021-12-22 16:47:28,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 16:47:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 465 transitions. [2021-12-22 16:47:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 16:47:28,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:28,508 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, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:28,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 16:47:28,508 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:28,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1289316037, now seen corresponding path program 1 times [2021-12-22 16:47:28,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:28,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452403719] [2021-12-22 16:47:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:28,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:28,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:28,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452403719] [2021-12-22 16:47:28,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452403719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:28,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:28,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 16:47:28,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471113018] [2021-12-22 16:47:28,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:28,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:47:28,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:28,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:47:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:47:28,635 INFO L87 Difference]: Start difference. First operand 330 states and 465 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 16:47:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:28,847 INFO L93 Difference]: Finished difference Result 333 states and 466 transitions. [2021-12-22 16:47:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 16:47:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2021-12-22 16:47:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:28,849 INFO L225 Difference]: With dead ends: 333 [2021-12-22 16:47:28,849 INFO L226 Difference]: Without dead ends: 333 [2021-12-22 16:47:28,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:28,850 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 66 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:28,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1256 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-22 16:47:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 330. [2021-12-22 16:47:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 259 states have (on average 1.247104247104247) internal successors, (323), 263 states have internal predecessors, (323), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (89), 49 states have call predecessors, (89), 47 states have call successors, (89) [2021-12-22 16:47:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 462 transitions. [2021-12-22 16:47:28,871 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 462 transitions. Word has length 57 [2021-12-22 16:47:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:28,872 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 462 transitions. [2021-12-22 16:47:28,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 16:47:28,872 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 462 transitions. [2021-12-22 16:47:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-22 16:47:28,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:28,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:28,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 16:47:28,874 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1579853377, now seen corresponding path program 1 times [2021-12-22 16:47:28,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:28,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636224108] [2021-12-22 16:47:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:28,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 16:47:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:28,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:28,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636224108] [2021-12-22 16:47:28,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636224108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:28,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:28,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 16:47:28,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080081002] [2021-12-22 16:47:28,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:28,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 16:47:28,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 16:47:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:47:28,979 INFO L87 Difference]: Start difference. First operand 330 states and 462 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 16:47:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:29,276 INFO L93 Difference]: Finished difference Result 308 states and 421 transitions. [2021-12-22 16:47:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 16:47:29,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2021-12-22 16:47:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:29,277 INFO L225 Difference]: With dead ends: 308 [2021-12-22 16:47:29,277 INFO L226 Difference]: Without dead ends: 308 [2021-12-22 16:47:29,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-22 16:47:29,278 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 197 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:29,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 937 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-12-22 16:47:29,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 300. [2021-12-22 16:47:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 235 states have (on average 1.251063829787234) internal successors, (294), 241 states have internal predecessors, (294), 47 states have call successors, (47), 17 states have call predecessors, (47), 17 states have return successors, (68), 41 states have call predecessors, (68), 44 states have call successors, (68) [2021-12-22 16:47:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 409 transitions. [2021-12-22 16:47:29,284 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 409 transitions. Word has length 68 [2021-12-22 16:47:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:29,284 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 409 transitions. [2021-12-22 16:47:29,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 16:47:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 409 transitions. [2021-12-22 16:47:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-22 16:47:29,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:29,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:29,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-22 16:47:29,286 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2132296105, now seen corresponding path program 1 times [2021-12-22 16:47:29,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:29,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809021612] [2021-12-22 16:47:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:29,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:29,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 16:47:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:29,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:29,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809021612] [2021-12-22 16:47:29,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809021612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:29,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:29,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-22 16:47:29,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558932556] [2021-12-22 16:47:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:29,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 16:47:29,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 16:47:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-12-22 16:47:29,476 INFO L87 Difference]: Start difference. First operand 300 states and 409 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 11 states have internal predecessors, (62), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 16:47:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:29,859 INFO L93 Difference]: Finished difference Result 333 states and 455 transitions. [2021-12-22 16:47:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 16:47:29,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 11 states have internal predecessors, (62), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2021-12-22 16:47:29,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:29,860 INFO L225 Difference]: With dead ends: 333 [2021-12-22 16:47:29,860 INFO L226 Difference]: Without dead ends: 315 [2021-12-22 16:47:29,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-12-22 16:47:29,861 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 125 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:29,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 2388 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-22 16:47:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 303. [2021-12-22 16:47:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 237 states have (on average 1.248945147679325) internal successors, (296), 244 states have internal predecessors, (296), 47 states have call successors, (47), 17 states have call predecessors, (47), 18 states have return successors, (69), 41 states have call predecessors, (69), 44 states have call successors, (69) [2021-12-22 16:47:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 412 transitions. [2021-12-22 16:47:29,871 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 412 transitions. Word has length 73 [2021-12-22 16:47:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:29,872 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 412 transitions. [2021-12-22 16:47:29,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 11 states have internal predecessors, (62), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 16:47:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 412 transitions. [2021-12-22 16:47:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-22 16:47:29,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:29,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:29,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 16:47:29,874 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:29,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2002463371, now seen corresponding path program 1 times [2021-12-22 16:47:29,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:29,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144913731] [2021-12-22 16:47:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:29,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:29,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 16:47:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:30,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:30,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144913731] [2021-12-22 16:47:30,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144913731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:30,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:30,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-22 16:47:30,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062110636] [2021-12-22 16:47:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:30,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 16:47:30,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:30,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 16:47:30,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-12-22 16:47:30,081 INFO L87 Difference]: Start difference. First operand 303 states and 412 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 16:47:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:30,502 INFO L93 Difference]: Finished difference Result 337 states and 459 transitions. [2021-12-22 16:47:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 16:47:30,503 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2021-12-22 16:47:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:30,504 INFO L225 Difference]: With dead ends: 337 [2021-12-22 16:47:30,504 INFO L226 Difference]: Without dead ends: 319 [2021-12-22 16:47:30,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-12-22 16:47:30,505 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 126 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:30,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 2563 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-22 16:47:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 303. [2021-12-22 16:47:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 237 states have (on average 1.248945147679325) internal successors, (296), 244 states have internal predecessors, (296), 47 states have call successors, (47), 17 states have call predecessors, (47), 18 states have return successors, (69), 41 states have call predecessors, (69), 44 states have call successors, (69) [2021-12-22 16:47:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 412 transitions. [2021-12-22 16:47:30,511 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 412 transitions. Word has length 74 [2021-12-22 16:47:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:30,512 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 412 transitions. [2021-12-22 16:47:30,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 16:47:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 412 transitions. [2021-12-22 16:47:30,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-22 16:47:30,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:30,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:30,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 16:47:30,513 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:30,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:30,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1293155315, now seen corresponding path program 1 times [2021-12-22 16:47:30,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:30,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172726507] [2021-12-22 16:47:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:30,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 16:47:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 16:47:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:30,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:30,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172726507] [2021-12-22 16:47:30,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172726507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:30,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:30,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-22 16:47:30,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291821543] [2021-12-22 16:47:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:30,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-22 16:47:30,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:30,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-22 16:47:30,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-12-22 16:47:30,701 INFO L87 Difference]: Start difference. First operand 303 states and 412 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 16:47:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:31,424 INFO L93 Difference]: Finished difference Result 443 states and 663 transitions. [2021-12-22 16:47:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 16:47:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 82 [2021-12-22 16:47:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:31,427 INFO L225 Difference]: With dead ends: 443 [2021-12-22 16:47:31,427 INFO L226 Difference]: Without dead ends: 415 [2021-12-22 16:47:31,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-12-22 16:47:31,428 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 194 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:31,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 3016 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 16:47:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-22 16:47:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 399. [2021-12-22 16:47:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 305 states have (on average 1.259016393442623) internal successors, (384), 316 states have internal predecessors, (384), 74 states have call successors, (74), 17 states have call predecessors, (74), 19 states have return successors, (108), 65 states have call predecessors, (108), 70 states have call successors, (108) [2021-12-22 16:47:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 566 transitions. [2021-12-22 16:47:31,437 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 566 transitions. Word has length 82 [2021-12-22 16:47:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:31,438 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 566 transitions. [2021-12-22 16:47:31,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 16:47:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 566 transitions. [2021-12-22 16:47:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 16:47:31,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:31,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:31,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-22 16:47:31,441 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1315841768, now seen corresponding path program 1 times [2021-12-22 16:47:31,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:31,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692660192] [2021-12-22 16:47:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:31,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:31,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 16:47:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:31,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 16:47:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:31,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:31,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692660192] [2021-12-22 16:47:31,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692660192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:31,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:31,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 16:47:31,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41807167] [2021-12-22 16:47:31,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:31,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:47:31,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:47:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:31,554 INFO L87 Difference]: Start difference. First operand 399 states and 566 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-22 16:47:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:31,980 INFO L93 Difference]: Finished difference Result 520 states and 710 transitions. [2021-12-22 16:47:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 16:47:31,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 84 [2021-12-22 16:47:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:31,983 INFO L225 Difference]: With dead ends: 520 [2021-12-22 16:47:31,983 INFO L226 Difference]: Without dead ends: 520 [2021-12-22 16:47:31,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-12-22 16:47:31,983 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 311 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:31,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 1338 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 16:47:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-12-22 16:47:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 478. [2021-12-22 16:47:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 373 states have (on average 1.2520107238605898) internal successors, (467), 383 states have internal predecessors, (467), 77 states have call successors, (77), 23 states have call predecessors, (77), 27 states have return successors, (112), 71 states have call predecessors, (112), 73 states have call successors, (112) [2021-12-22 16:47:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 656 transitions. [2021-12-22 16:47:31,992 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 656 transitions. Word has length 84 [2021-12-22 16:47:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:31,992 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 656 transitions. [2021-12-22 16:47:31,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-22 16:47:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 656 transitions. [2021-12-22 16:47:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 16:47:31,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:31,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:31,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-22 16:47:31,995 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:31,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1543379991, now seen corresponding path program 1 times [2021-12-22 16:47:31,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:31,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704454987] [2021-12-22 16:47:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:31,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 16:47:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 16:47:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:32,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:32,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704454987] [2021-12-22 16:47:32,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704454987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:32,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:32,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 16:47:32,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650081149] [2021-12-22 16:47:32,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:32,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:47:32,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:47:32,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:32,137 INFO L87 Difference]: Start difference. First operand 478 states and 656 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-22 16:47:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:32,637 INFO L93 Difference]: Finished difference Result 478 states and 646 transitions. [2021-12-22 16:47:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 16:47:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 84 [2021-12-22 16:47:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:32,639 INFO L225 Difference]: With dead ends: 478 [2021-12-22 16:47:32,639 INFO L226 Difference]: Without dead ends: 478 [2021-12-22 16:47:32,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-12-22 16:47:32,640 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 453 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:32,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 813 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:32,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-12-22 16:47:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2021-12-22 16:47:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 373 states have (on average 1.2466487935656836) internal successors, (465), 383 states have internal predecessors, (465), 77 states have call successors, (77), 23 states have call predecessors, (77), 27 states have return successors, (104), 71 states have call predecessors, (104), 73 states have call successors, (104) [2021-12-22 16:47:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 646 transitions. [2021-12-22 16:47:32,650 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 646 transitions. Word has length 84 [2021-12-22 16:47:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:32,650 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 646 transitions. [2021-12-22 16:47:32,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-22 16:47:32,650 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 646 transitions. [2021-12-22 16:47:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-22 16:47:32,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:32,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:32,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-22 16:47:32,652 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:32,652 INFO L85 PathProgramCache]: Analyzing trace with hash -654013751, now seen corresponding path program 1 times [2021-12-22 16:47:32,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:32,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432259110] [2021-12-22 16:47:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:32,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 16:47:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 16:47:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:32,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:32,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432259110] [2021-12-22 16:47:32,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432259110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:32,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:32,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-22 16:47:32,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071657270] [2021-12-22 16:47:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:32,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-22 16:47:32,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-22 16:47:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-12-22 16:47:32,871 INFO L87 Difference]: Start difference. First operand 478 states and 646 transitions. Second operand has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 11 states have internal predecessors, (70), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 16:47:33,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:33,552 INFO L93 Difference]: Finished difference Result 628 states and 917 transitions. [2021-12-22 16:47:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 16:47:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 11 states have internal predecessors, (70), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 83 [2021-12-22 16:47:33,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:33,554 INFO L225 Difference]: With dead ends: 628 [2021-12-22 16:47:33,554 INFO L226 Difference]: Without dead ends: 592 [2021-12-22 16:47:33,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-12-22 16:47:33,557 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 222 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:33,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2659 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 16:47:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-12-22 16:47:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 475. [2021-12-22 16:47:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 371 states have (on average 1.247978436657682) internal successors, (463), 380 states have internal predecessors, (463), 77 states have call successors, (77), 23 states have call predecessors, (77), 26 states have return successors, (103), 71 states have call predecessors, (103), 73 states have call successors, (103) [2021-12-22 16:47:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 643 transitions. [2021-12-22 16:47:33,568 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 643 transitions. Word has length 83 [2021-12-22 16:47:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:33,569 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 643 transitions. [2021-12-22 16:47:33,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 11 states have internal predecessors, (70), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 16:47:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 643 transitions. [2021-12-22 16:47:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 16:47:33,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:33,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:33,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-22 16:47:33,570 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:33,571 INFO L85 PathProgramCache]: Analyzing trace with hash -177974759, now seen corresponding path program 1 times [2021-12-22 16:47:33,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:33,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271815079] [2021-12-22 16:47:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:33,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:33,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:33,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 16:47:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 16:47:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:33,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:33,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271815079] [2021-12-22 16:47:33,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271815079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:33,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:33,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-22 16:47:33,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812288271] [2021-12-22 16:47:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:33,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 16:47:33,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 16:47:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:47:33,761 INFO L87 Difference]: Start difference. First operand 475 states and 643 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 16:47:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:34,366 INFO L93 Difference]: Finished difference Result 927 states and 1259 transitions. [2021-12-22 16:47:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 16:47:34,367 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 84 [2021-12-22 16:47:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:34,369 INFO L225 Difference]: With dead ends: 927 [2021-12-22 16:47:34,370 INFO L226 Difference]: Without dead ends: 906 [2021-12-22 16:47:34,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2021-12-22 16:47:34,374 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 348 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:34,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2331 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 16:47:34,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-12-22 16:47:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 567. [2021-12-22 16:47:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 447 states have (on average 1.2170022371364653) internal successors, (544), 459 states have internal predecessors, (544), 83 states have call successors, (83), 29 states have call predecessors, (83), 36 states have return successors, (113), 78 states have call predecessors, (113), 79 states have call successors, (113) [2021-12-22 16:47:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 740 transitions. [2021-12-22 16:47:34,388 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 740 transitions. Word has length 84 [2021-12-22 16:47:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:34,389 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 740 transitions. [2021-12-22 16:47:34,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 16:47:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 740 transitions. [2021-12-22 16:47:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 16:47:34,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:34,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:34,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-22 16:47:34,391 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1320477225, now seen corresponding path program 1 times [2021-12-22 16:47:34,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:34,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765295327] [2021-12-22 16:47:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:34,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:34,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 16:47:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:34,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 16:47:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 16:47:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:34,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:34,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765295327] [2021-12-22 16:47:34,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765295327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:34,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:34,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-22 16:47:34,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761178091] [2021-12-22 16:47:34,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:34,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 16:47:34,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:34,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 16:47:34,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:47:34,564 INFO L87 Difference]: Start difference. First operand 567 states and 740 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 16:47:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:35,213 INFO L93 Difference]: Finished difference Result 924 states and 1251 transitions. [2021-12-22 16:47:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 16:47:35,213 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 84 [2021-12-22 16:47:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:35,215 INFO L225 Difference]: With dead ends: 924 [2021-12-22 16:47:35,215 INFO L226 Difference]: Without dead ends: 899 [2021-12-22 16:47:35,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2021-12-22 16:47:35,216 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 320 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:35,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 3216 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 16:47:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-12-22 16:47:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 468. [2021-12-22 16:47:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 366 states have (on average 1.2486338797814207) internal successors, (457), 375 states have internal predecessors, (457), 75 states have call successors, (75), 23 states have call predecessors, (75), 26 states have return successors, (100), 69 states have call predecessors, (100), 71 states have call successors, (100) [2021-12-22 16:47:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 632 transitions. [2021-12-22 16:47:35,231 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 632 transitions. Word has length 84 [2021-12-22 16:47:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:35,232 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 632 transitions. [2021-12-22 16:47:35,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 16:47:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 632 transitions. [2021-12-22 16:47:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 16:47:35,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:35,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:35,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-22 16:47:35,234 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1169943443, now seen corresponding path program 1 times [2021-12-22 16:47:35,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:35,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760979344] [2021-12-22 16:47:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:35,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:35,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 16:47:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 16:47:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:35,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 16:47:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:35,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:35,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760979344] [2021-12-22 16:47:35,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760979344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:35,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:35,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-22 16:47:35,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291138910] [2021-12-22 16:47:35,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:35,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 16:47:35,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 16:47:35,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-22 16:47:35,438 INFO L87 Difference]: Start difference. First operand 468 states and 632 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 16:47:36,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:36,298 INFO L93 Difference]: Finished difference Result 929 states and 1255 transitions. [2021-12-22 16:47:36,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-22 16:47:36,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 93 [2021-12-22 16:47:36,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:36,301 INFO L225 Difference]: With dead ends: 929 [2021-12-22 16:47:36,301 INFO L226 Difference]: Without dead ends: 885 [2021-12-22 16:47:36,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2021-12-22 16:47:36,302 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 439 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:36,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 2503 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 16:47:36,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-12-22 16:47:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 858. [2021-12-22 16:47:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 666 states have (on average 1.2147147147147148) internal successors, (809), 684 states have internal predecessors, (809), 142 states have call successors, (142), 43 states have call predecessors, (142), 49 states have return successors, (185), 130 states have call predecessors, (185), 137 states have call successors, (185) [2021-12-22 16:47:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1136 transitions. [2021-12-22 16:47:36,318 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1136 transitions. Word has length 93 [2021-12-22 16:47:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:36,318 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1136 transitions. [2021-12-22 16:47:36,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 16:47:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1136 transitions. [2021-12-22 16:47:36,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 16:47:36,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:36,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:36,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-22 16:47:36,321 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash -274894159, now seen corresponding path program 1 times [2021-12-22 16:47:36,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:36,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980252134] [2021-12-22 16:47:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:36,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 16:47:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 16:47:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-22 16:47:36,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:36,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980252134] [2021-12-22 16:47:36,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980252134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:36,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:36,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 16:47:36,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877723718] [2021-12-22 16:47:36,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:36,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:47:36,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:47:36,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:36,446 INFO L87 Difference]: Start difference. First operand 858 states and 1136 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 16:47:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:36,785 INFO L93 Difference]: Finished difference Result 1142 states and 1584 transitions. [2021-12-22 16:47:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 16:47:36,785 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 95 [2021-12-22 16:47:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:36,788 INFO L225 Difference]: With dead ends: 1142 [2021-12-22 16:47:36,788 INFO L226 Difference]: Without dead ends: 1142 [2021-12-22 16:47:36,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:47:36,789 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 158 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:36,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1505 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-12-22 16:47:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 834. [2021-12-22 16:47:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 650 states have (on average 1.1953846153846155) internal successors, (777), 664 states have internal predecessors, (777), 134 states have call successors, (134), 43 states have call predecessors, (134), 49 states have return successors, (173), 126 states have call predecessors, (173), 129 states have call successors, (173) [2021-12-22 16:47:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1084 transitions. [2021-12-22 16:47:36,806 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1084 transitions. Word has length 95 [2021-12-22 16:47:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:36,806 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1084 transitions. [2021-12-22 16:47:36,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 16:47:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1084 transitions. [2021-12-22 16:47:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 16:47:36,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:36,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:36,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-22 16:47:36,808 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1940677009, now seen corresponding path program 1 times [2021-12-22 16:47:36,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:36,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647661259] [2021-12-22 16:47:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:36,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 16:47:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 16:47:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 16:47:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:36,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:36,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647661259] [2021-12-22 16:47:36,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647661259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:36,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:36,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-22 16:47:36,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54259904] [2021-12-22 16:47:36,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:36,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 16:47:36,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:36,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 16:47:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-22 16:47:36,975 INFO L87 Difference]: Start difference. First operand 834 states and 1084 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 16:47:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:38,025 INFO L93 Difference]: Finished difference Result 855 states and 1113 transitions. [2021-12-22 16:47:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-22 16:47:38,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 93 [2021-12-22 16:47:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:38,027 INFO L225 Difference]: With dead ends: 855 [2021-12-22 16:47:38,027 INFO L226 Difference]: Without dead ends: 809 [2021-12-22 16:47:38,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2021-12-22 16:47:38,028 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 342 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:38,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 3443 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 16:47:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-12-22 16:47:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 306. [2021-12-22 16:47:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 242 states have (on average 1.1363636363636365) internal successors, (275), 247 states have internal predecessors, (275), 41 states have call successors, (41), 21 states have call predecessors, (41), 22 states have return successors, (48), 37 states have call predecessors, (48), 38 states have call successors, (48) [2021-12-22 16:47:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 364 transitions. [2021-12-22 16:47:38,039 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 364 transitions. Word has length 93 [2021-12-22 16:47:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:38,039 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 364 transitions. [2021-12-22 16:47:38,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 16:47:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 364 transitions. [2021-12-22 16:47:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 16:47:38,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:38,041 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:38,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-22 16:47:38,041 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:38,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash -369931013, now seen corresponding path program 1 times [2021-12-22 16:47:38,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:38,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072548823] [2021-12-22 16:47:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:38,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 16:47:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 16:47:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 16:47:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 16:47:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-22 16:47:38,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:38,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072548823] [2021-12-22 16:47:38,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072548823] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:47:38,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633877518] [2021-12-22 16:47:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:38,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:47:38,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:47:38,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:47:38,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 16:47:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 16:47:38,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:47:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 16:47:38,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:47:38,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633877518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:38,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 16:47:38,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-12-22 16:47:38,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003780652] [2021-12-22 16:47:38,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:38,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:47:38,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:47:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-22 16:47:38,638 INFO L87 Difference]: Start difference. First operand 306 states and 364 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 16:47:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:38,678 INFO L93 Difference]: Finished difference Result 328 states and 392 transitions. [2021-12-22 16:47:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:47:38,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 133 [2021-12-22 16:47:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:38,680 INFO L225 Difference]: With dead ends: 328 [2021-12-22 16:47:38,680 INFO L226 Difference]: Without dead ends: 327 [2021-12-22 16:47:38,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:47:38,681 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 12 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:38,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 720 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-22 16:47:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 322. [2021-12-22 16:47:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 256 states have (on average 1.12890625) internal successors, (289), 262 states have internal predecessors, (289), 41 states have call successors, (41), 21 states have call predecessors, (41), 24 states have return successors, (55), 38 states have call predecessors, (55), 38 states have call successors, (55) [2021-12-22 16:47:38,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 385 transitions. [2021-12-22 16:47:38,686 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 385 transitions. Word has length 133 [2021-12-22 16:47:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:38,687 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 385 transitions. [2021-12-22 16:47:38,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 16:47:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 385 transitions. [2021-12-22 16:47:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 16:47:38,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:38,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:38,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 16:47:38,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-22 16:47:38,903 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:38,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:38,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2141054115, now seen corresponding path program 1 times [2021-12-22 16:47:38,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:38,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935968591] [2021-12-22 16:47:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:38,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:38,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 16:47:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 16:47:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 16:47:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 16:47:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-22 16:47:39,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:39,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935968591] [2021-12-22 16:47:39,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935968591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:39,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:39,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 16:47:39,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277641242] [2021-12-22 16:47:39,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:39,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:47:39,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:47:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:39,060 INFO L87 Difference]: Start difference. First operand 322 states and 385 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-22 16:47:39,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:39,359 INFO L93 Difference]: Finished difference Result 362 states and 442 transitions. [2021-12-22 16:47:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 16:47:39,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 134 [2021-12-22 16:47:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:39,361 INFO L225 Difference]: With dead ends: 362 [2021-12-22 16:47:39,361 INFO L226 Difference]: Without dead ends: 362 [2021-12-22 16:47:39,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:47:39,361 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 138 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:39,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1082 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-22 16:47:39,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 315. [2021-12-22 16:47:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 251 states have (on average 1.1155378486055776) internal successors, (280), 256 states have internal predecessors, (280), 39 states have call successors, (39), 21 states have call predecessors, (39), 24 states have return successors, (51), 37 states have call predecessors, (51), 36 states have call successors, (51) [2021-12-22 16:47:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 370 transitions. [2021-12-22 16:47:39,368 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 370 transitions. Word has length 134 [2021-12-22 16:47:39,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:39,368 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 370 transitions. [2021-12-22 16:47:39,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-22 16:47:39,368 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 370 transitions. [2021-12-22 16:47:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-22 16:47:39,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:39,370 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:39,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-22 16:47:39,370 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:39,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:39,371 INFO L85 PathProgramCache]: Analyzing trace with hash 437867423, now seen corresponding path program 1 times [2021-12-22 16:47:39,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:39,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048394523] [2021-12-22 16:47:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:39,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 16:47:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 16:47:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 16:47:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 16:47:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 16:47:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 16:47:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-22 16:47:39,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:39,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048394523] [2021-12-22 16:47:39,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048394523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:39,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:39,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 16:47:39,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289966202] [2021-12-22 16:47:39,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:39,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:47:39,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:39,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:47:39,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:39,519 INFO L87 Difference]: Start difference. First operand 315 states and 370 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-22 16:47:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:39,824 INFO L93 Difference]: Finished difference Result 317 states and 376 transitions. [2021-12-22 16:47:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 16:47:39,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 170 [2021-12-22 16:47:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:39,826 INFO L225 Difference]: With dead ends: 317 [2021-12-22 16:47:39,826 INFO L226 Difference]: Without dead ends: 317 [2021-12-22 16:47:39,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:47:39,827 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 123 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:39,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 1014 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 16:47:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-12-22 16:47:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 217. [2021-12-22 16:47:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 176 states have (on average 1.1136363636363635) internal successors, (196), 178 states have internal predecessors, (196), 24 states have call successors, (24), 14 states have call predecessors, (24), 16 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2021-12-22 16:47:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 250 transitions. [2021-12-22 16:47:39,831 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 250 transitions. Word has length 170 [2021-12-22 16:47:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:39,831 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 250 transitions. [2021-12-22 16:47:39,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-22 16:47:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 250 transitions. [2021-12-22 16:47:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-22 16:47:39,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:39,833 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:39,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-22 16:47:39,833 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:39,833 INFO L85 PathProgramCache]: Analyzing trace with hash 507971218, now seen corresponding path program 1 times [2021-12-22 16:47:39,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:39,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259031178] [2021-12-22 16:47:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:39,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 16:47:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 16:47:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 16:47:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 16:47:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 16:47:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 16:47:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 16:47:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 16:47:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:47:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 16:47:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-22 16:47:40,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:40,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259031178] [2021-12-22 16:47:40,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259031178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:40,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:40,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 16:47:40,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646843608] [2021-12-22 16:47:40,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:40,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 16:47:40,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:40,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 16:47:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:47:40,017 INFO L87 Difference]: Start difference. First operand 217 states and 250 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-22 16:47:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:40,313 INFO L93 Difference]: Finished difference Result 209 states and 241 transitions. [2021-12-22 16:47:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 16:47:40,314 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 173 [2021-12-22 16:47:40,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:40,315 INFO L225 Difference]: With dead ends: 209 [2021-12-22 16:47:40,315 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 16:47:40,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-22 16:47:40,315 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 98 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:47:40,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 755 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:47:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 16:47:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 16:47:40,316 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) [2021-12-22 16:47:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 16:47:40,316 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2021-12-22 16:47:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:40,316 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 16:47:40,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-22 16:47:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 16:47:40,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 16:47:40,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-22 16:47:40,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-22 16:47:40,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-22 16:47:40,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:40,323 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 16:47:40,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:47:40 BoogieIcfgContainer [2021-12-22 16:47:40,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 16:47:40,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 16:47:40,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 16:47:40,328 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 16:47:40,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:47:17" (3/4) ... [2021-12-22 16:47:40,331 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 16:47:40,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoBuildDeviceIoControlRequest [2021-12-22 16:47:40,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-12-22 16:47:40,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfForwardIrpSynchronous [2021-12-22 16:47:40,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-12-22 16:47:40,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-12-22 16:47:40,340 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-12-22 16:47:40,340 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfIrpCompletion [2021-12-22 16:47:40,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-12-22 16:47:40,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfIoCompletion [2021-12-22 16:47:40,353 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 58 nodes and edges [2021-12-22 16:47:40,355 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-12-22 16:47:40,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 16:47:40,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 16:47:40,445 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 16:47:40,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 16:47:40,445 INFO L158 Benchmark]: Toolchain (without parser) took 24295.03ms. Allocated memory was 104.9MB in the beginning and 247.5MB in the end (delta: 142.6MB). Free memory was 75.7MB in the beginning and 182.7MB in the end (delta: -107.1MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2021-12-22 16:47:40,445 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:47:40,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.59ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 75.2MB in the beginning and 107.1MB in the end (delta: -31.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 16:47:40,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.75ms. Allocated memory is still 140.5MB. Free memory was 107.1MB in the beginning and 102.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 16:47:40,446 INFO L158 Benchmark]: Boogie Preprocessor took 61.03ms. Allocated memory is still 140.5MB. Free memory was 102.3MB in the beginning and 99.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:47:40,446 INFO L158 Benchmark]: RCFGBuilder took 824.24ms. Allocated memory is still 140.5MB. Free memory was 99.5MB in the beginning and 56.1MB in the end (delta: 43.4MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-12-22 16:47:40,446 INFO L158 Benchmark]: TraceAbstraction took 22803.65ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 55.5MB in the beginning and 202.6MB in the end (delta: -147.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:47:40,447 INFO L158 Benchmark]: Witness Printer took 116.91ms. Allocated memory is still 247.5MB. Free memory was 202.6MB in the beginning and 182.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-22 16:47:40,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.59ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 75.2MB in the beginning and 107.1MB in the end (delta: -31.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.75ms. Allocated memory is still 140.5MB. Free memory was 107.1MB in the beginning and 102.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.03ms. Allocated memory is still 140.5MB. Free memory was 102.3MB in the beginning and 99.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 824.24ms. Allocated memory is still 140.5MB. Free memory was 99.5MB in the beginning and 56.1MB in the end (delta: 43.4MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 22803.65ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 55.5MB in the beginning and 202.6MB in the end (delta: -147.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 116.91ms. Allocated memory is still 247.5MB. Free memory was 202.6MB in the beginning and 182.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 647]: 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 10 procedures, 244 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 22.7s, OverallIterations: 51, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10919 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10671 mSDsluCounter, 62252 SdHoareTripleChecker+Invalid, 10.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48098 mSDsCounter, 2995 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20903 IncrementalHoareTripleChecker+Invalid, 23898 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2995 mSolverCounterUnsat, 14154 mSDtfsCounter, 20903 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 495 SyntacticMatches, 3 SemanticMatches, 547 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1197occurred in iteration=30, InterpolantAutomatonStates: 500, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 51 MinimizatonAttempts, 5084 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 2987 NumberOfCodeBlocks, 2987 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2935 ConstructedInterpolants, 0 QuantifiedInterpolants, 7423 SizeOfPredicates, 1 NumberOfNonLiveVariables, 868 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 52 InterpolantComputations, 51 PerfectInterpolantSequences, 552/558 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! [2021-12-22 16:47:40,479 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