./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:07:44,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:07:44,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:07:44,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:07:44,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:07:44,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:07:44,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:07:44,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:07:44,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:07:44,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:07:44,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:07:44,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:07:44,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:07:44,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:07:44,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:07:44,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:07:44,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:07:44,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:07:44,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:07:44,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:07:44,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:07:44,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:07:44,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:07:44,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:07:44,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:07:44,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:07:44,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:07:44,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:07:44,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:07:44,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:07:44,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:07:44,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:07:44,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:07:44,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:07:44,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:07:44,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:07:44,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:07:44,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:07:44,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:07:44,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:07:44,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:07:44,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 06:07:44,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:07:44,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:07:44,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:07:44,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:07:44,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:07:44,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:07:44,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:07:44,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:07:44,511 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:07:44,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:07:44,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:07:44,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:07:44,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:07:44,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:07:44,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:07:44,513 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:07:44,513 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:07:44,513 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:07:44,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:07:44,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:07:44,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:07:44,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:07:44,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:07:44,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:07:44,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:07:44,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:44,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:07:44,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:07:44,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 06:07:44,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 06:07:44,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:07:44,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad [2021-12-16 06:07:44,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:07:44,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:07:44,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:07:44,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:07:44,796 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:07:44,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-12-16 06:07:44,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52f3ee0b/5a150f9f317844be869536d0d97c2a2c/FLAG83767459e [2021-12-16 06:07:45,321 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:07:45,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-12-16 06:07:45,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52f3ee0b/5a150f9f317844be869536d0d97c2a2c/FLAG83767459e [2021-12-16 06:07:45,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52f3ee0b/5a150f9f317844be869536d0d97c2a2c [2021-12-16 06:07:45,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:07:45,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:07:45,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:45,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:07:45,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:07:45,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:45" (1/1) ... [2021-12-16 06:07:45,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69dbb2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:45, skipping insertion in model container [2021-12-16 06:07:45,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:45" (1/1) ... [2021-12-16 06:07:45,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:07:45,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:07:46,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-12-16 06:07:46,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:46,065 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 06:07:46,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-12-16 06:07:46,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:46,198 INFO L208 MainTranslator]: Completed translation [2021-12-16 06:07:46,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46 WrapperNode [2021-12-16 06:07:46,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:46,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:46,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 06:07:46,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 06:07:46,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,280 INFO L137 Inliner]: procedures = 41, calls = 76, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 1331 [2021-12-16 06:07:46,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:46,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 06:07:46,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 06:07:46,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 06:07:46,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 06:07:46,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 06:07:46,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 06:07:46,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 06:07:46,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (1/1) ... [2021-12-16 06:07:46,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:46,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 06:07:46,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 06:07:46,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 06:07:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 06:07:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-16 06:07:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-16 06:07:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-12-16 06:07:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-12-16 06:07:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-16 06:07:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-16 06:07:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-16 06:07:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-16 06:07:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-16 06:07:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-16 06:07:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 06:07:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-16 06:07:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-16 06:07:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-12-16 06:07:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-12-16 06:07:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 06:07:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 06:07:46,714 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 06:07:46,718 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 06:07:46,723 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:46,799 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-16 06:07:46,800 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-16 06:07:46,802 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:46,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-16 06:07:46,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-16 06:07:46,827 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:46,833 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:46,841 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:46,843 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:46,845 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:46,845 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:46,849 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:47,410 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume !false; [2021-12-16 06:07:47,411 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##180: assume false; [2021-12-16 06:07:47,411 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##181: assume !false; [2021-12-16 06:07:47,411 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume !false; [2021-12-16 06:07:47,412 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume false; [2021-12-16 06:07:47,412 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2021-12-16 06:07:47,412 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2021-12-16 06:07:47,412 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2021-12-16 06:07:47,412 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-12-16 06:07:47,412 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-12-16 06:07:47,412 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##169: assume false; [2021-12-16 06:07:47,413 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##236: assume !false; [2021-12-16 06:07:47,413 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume false; [2021-12-16 06:07:47,413 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2021-12-16 06:07:47,414 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:47,448 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-16 06:07:47,448 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-16 06:07:47,449 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:47,451 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:47,451 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:47,484 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-16 06:07:47,485 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-16 06:07:47,485 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-16 06:07:47,485 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-16 06:07:47,486 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-16 06:07:47,486 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-16 06:07:47,503 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 06:07:47,519 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 06:07:47,520 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 06:07:47,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:47 BoogieIcfgContainer [2021-12-16 06:07:47,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 06:07:47,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 06:07:47,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 06:07:47,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 06:07:47,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:07:45" (1/3) ... [2021-12-16 06:07:47,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4c8116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:47, skipping insertion in model container [2021-12-16 06:07:47,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:46" (2/3) ... [2021-12-16 06:07:47,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4c8116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:47, skipping insertion in model container [2021-12-16 06:07:47,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:47" (3/3) ... [2021-12-16 06:07:47,532 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2021-12-16 06:07:47,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 06:07:47,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 06:07:47,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 06:07:47,590 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 [2021-12-16 06:07:47,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 06:07:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 259 states have (on average 1.5250965250965252) internal successors, (395), 285 states have internal predecessors, (395), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-16 06:07:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 06:07:47,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:47,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:47,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash -207662691, now seen corresponding path program 1 times [2021-12-16 06:07:47,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:47,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108453557] [2021-12-16 06:07:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:47,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:47,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:47,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108453557] [2021-12-16 06:07:47,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108453557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:47,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:47,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:47,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697993866] [2021-12-16 06:07:47,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:47,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:47,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:47,917 INFO L87 Difference]: Start difference. First operand has 319 states, 259 states have (on average 1.5250965250965252) internal successors, (395), 285 states have internal predecessors, (395), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,011 INFO L93 Difference]: Finished difference Result 318 states and 469 transitions. [2021-12-16 06:07:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:48,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 06:07:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,040 INFO L225 Difference]: With dead ends: 318 [2021-12-16 06:07:48,040 INFO L226 Difference]: Without dead ends: 316 [2021-12-16 06:07:48,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,048 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 262 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 630 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-16 06:07:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-12-16 06:07:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 257 states have (on average 1.5058365758754864) internal successors, (387), 281 states have internal predecessors, (387), 50 states have call successors, (50), 7 states have call predecessors, (50), 6 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-16 06:07:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2021-12-16 06:07:48,109 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 8 [2021-12-16 06:07:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,110 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2021-12-16 06:07:48,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2021-12-16 06:07:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 06:07:48,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:48,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 06:07:48,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1841054047, now seen corresponding path program 1 times [2021-12-16 06:07:48,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653821351] [2021-12-16 06:07:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653821351] [2021-12-16 06:07:48,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653821351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:48,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025266185] [2021-12-16 06:07:48,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:48,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:48,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,193 INFO L87 Difference]: Start difference. First operand 315 states and 466 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,344 INFO L93 Difference]: Finished difference Result 438 states and 641 transitions. [2021-12-16 06:07:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:48,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 06:07:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,349 INFO L225 Difference]: With dead ends: 438 [2021-12-16 06:07:48,350 INFO L226 Difference]: Without dead ends: 438 [2021-12-16 06:07:48,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,356 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 370 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 779 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-16 06:07:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 417. [2021-12-16 06:07:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 358 states have (on average 1.4245810055865922) internal successors, (510), 362 states have internal predecessors, (510), 48 states have call successors, (48), 11 states have call predecessors, (48), 9 states have return successors, (52), 44 states have call predecessors, (52), 37 states have call successors, (52) [2021-12-16 06:07:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 610 transitions. [2021-12-16 06:07:48,393 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 610 transitions. Word has length 16 [2021-12-16 06:07:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,393 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 610 transitions. [2021-12-16 06:07:48,393 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, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 610 transitions. [2021-12-16 06:07:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 06:07:48,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:48,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 06:07:48,395 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1499851735, now seen corresponding path program 1 times [2021-12-16 06:07:48,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606572557] [2021-12-16 06:07:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606572557] [2021-12-16 06:07:48,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606572557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:07:48,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438801913] [2021-12-16 06:07:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:48,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:48,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,463 INFO L87 Difference]: Start difference. First operand 417 states and 610 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,532 INFO L93 Difference]: Finished difference Result 416 states and 609 transitions. [2021-12-16 06:07:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:48,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-16 06:07:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,538 INFO L225 Difference]: With dead ends: 416 [2021-12-16 06:07:48,538 INFO L226 Difference]: Without dead ends: 411 [2021-12-16 06:07:48,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,545 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 272 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 543 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-12-16 06:07:48,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2021-12-16 06:07:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 353 states have (on average 1.4022662889518414) internal successors, (495), 356 states have internal predecessors, (495), 48 states have call successors, (48), 11 states have call predecessors, (48), 9 states have return successors, (52), 44 states have call predecessors, (52), 37 states have call successors, (52) [2021-12-16 06:07:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 595 transitions. [2021-12-16 06:07:48,580 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 595 transitions. Word has length 14 [2021-12-16 06:07:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,580 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 595 transitions. [2021-12-16 06:07:48,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 595 transitions. [2021-12-16 06:07:48,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 06:07:48,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:48,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 06:07:48,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,583 INFO L85 PathProgramCache]: Analyzing trace with hash -866854956, now seen corresponding path program 1 times [2021-12-16 06:07:48,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018337255] [2021-12-16 06:07:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018337255] [2021-12-16 06:07:48,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018337255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:48,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836272808] [2021-12-16 06:07:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:48,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,674 INFO L87 Difference]: Start difference. First operand 411 states and 595 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,698 INFO L93 Difference]: Finished difference Result 497 states and 703 transitions. [2021-12-16 06:07:48,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:48,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-16 06:07:48,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,701 INFO L225 Difference]: With dead ends: 497 [2021-12-16 06:07:48,701 INFO L226 Difference]: Without dead ends: 497 [2021-12-16 06:07:48,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,703 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 407 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 540 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-16 06:07:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 459. [2021-12-16 06:07:48,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 394 states have (on average 1.3959390862944163) internal successors, (550), 404 states have internal predecessors, (550), 50 states have call successors, (50), 14 states have call predecessors, (50), 14 states have return successors, (59), 43 states have call predecessors, (59), 41 states have call successors, (59) [2021-12-16 06:07:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 659 transitions. [2021-12-16 06:07:48,718 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 659 transitions. Word has length 19 [2021-12-16 06:07:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,719 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 659 transitions. [2021-12-16 06:07:48,719 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 659 transitions. [2021-12-16 06:07:48,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-16 06:07:48,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,720 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] [2021-12-16 06:07:48,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 06:07:48,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,721 INFO L85 PathProgramCache]: Analyzing trace with hash 122564209, now seen corresponding path program 1 times [2021-12-16 06:07:48,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749154415] [2021-12-16 06:07:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749154415] [2021-12-16 06:07:48,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749154415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:48,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389529505] [2021-12-16 06:07:48,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:48,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,763 INFO L87 Difference]: Start difference. First operand 459 states and 659 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,783 INFO L93 Difference]: Finished difference Result 638 states and 904 transitions. [2021-12-16 06:07:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:48,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-16 06:07:48,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,789 INFO L225 Difference]: With dead ends: 638 [2021-12-16 06:07:48,789 INFO L226 Difference]: Without dead ends: 638 [2021-12-16 06:07:48,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,790 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 394 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 655 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-12-16 06:07:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 613. [2021-12-16 06:07:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 531 states have (on average 1.384180790960452) internal successors, (735), 538 states have internal predecessors, (735), 60 states have call successors, (60), 22 states have call predecessors, (60), 21 states have return successors, (80), 55 states have call predecessors, (80), 53 states have call successors, (80) [2021-12-16 06:07:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 875 transitions. [2021-12-16 06:07:48,819 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 875 transitions. Word has length 22 [2021-12-16 06:07:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,819 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 875 transitions. [2021-12-16 06:07:48,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 875 transitions. [2021-12-16 06:07:48,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-16 06:07:48,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:48,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 06:07:48,823 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2116337547, now seen corresponding path program 1 times [2021-12-16 06:07:48,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761996479] [2021-12-16 06:07:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 06:07:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761996479] [2021-12-16 06:07:48,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761996479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:48,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446291897] [2021-12-16 06:07:48,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:48,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:48,883 INFO L87 Difference]: Start difference. First operand 613 states and 875 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,159 INFO L93 Difference]: Finished difference Result 669 states and 949 transitions. [2021-12-16 06:07:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:49,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-12-16 06:07:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,164 INFO L225 Difference]: With dead ends: 669 [2021-12-16 06:07:49,164 INFO L226 Difference]: Without dead ends: 669 [2021-12-16 06:07:49,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:49,168 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 115 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1246 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-12-16 06:07:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 648. [2021-12-16 06:07:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 564 states have (on average 1.375886524822695) internal successors, (776), 571 states have internal predecessors, (776), 60 states have call successors, (60), 22 states have call predecessors, (60), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2021-12-16 06:07:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 921 transitions. [2021-12-16 06:07:49,194 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 921 transitions. Word has length 29 [2021-12-16 06:07:49,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,196 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 921 transitions. [2021-12-16 06:07:49,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 921 transitions. [2021-12-16 06:07:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-16 06:07:49,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,200 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] [2021-12-16 06:07:49,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 06:07:49,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,201 INFO L85 PathProgramCache]: Analyzing trace with hash -205375653, now seen corresponding path program 1 times [2021-12-16 06:07:49,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743114965] [2021-12-16 06:07:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:49,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:49,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743114965] [2021-12-16 06:07:49,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743114965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:49,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152118335] [2021-12-16 06:07:49,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:49,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:49,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:49,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:49,269 INFO L87 Difference]: Start difference. First operand 648 states and 921 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,330 INFO L93 Difference]: Finished difference Result 660 states and 937 transitions. [2021-12-16 06:07:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:49,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-16 06:07:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,336 INFO L225 Difference]: With dead ends: 660 [2021-12-16 06:07:49,336 INFO L226 Difference]: Without dead ends: 660 [2021-12-16 06:07:49,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:49,337 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 20 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 778 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:49,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-12-16 06:07:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 659. [2021-12-16 06:07:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 575 states have (on average 1.373913043478261) internal successors, (790), 581 states have internal predecessors, (790), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2021-12-16 06:07:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 935 transitions. [2021-12-16 06:07:49,359 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 935 transitions. Word has length 28 [2021-12-16 06:07:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,361 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 935 transitions. [2021-12-16 06:07:49,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 935 transitions. [2021-12-16 06:07:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 06:07:49,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,362 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] [2021-12-16 06:07:49,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 06:07:49,363 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,364 INFO L85 PathProgramCache]: Analyzing trace with hash -729865897, now seen corresponding path program 1 times [2021-12-16 06:07:49,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513935409] [2021-12-16 06:07:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 06:07:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:49,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:49,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513935409] [2021-12-16 06:07:49,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513935409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:49,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786393599] [2021-12-16 06:07:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:49,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:49,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:49,479 INFO L87 Difference]: Start difference. First operand 659 states and 935 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,861 INFO L93 Difference]: Finished difference Result 680 states and 962 transitions. [2021-12-16 06:07:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-16 06:07:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,865 INFO L225 Difference]: With dead ends: 680 [2021-12-16 06:07:49,865 INFO L226 Difference]: Without dead ends: 680 [2021-12-16 06:07:49,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:49,866 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 608 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 1197 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-12-16 06:07:49,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 659. [2021-12-16 06:07:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 575 states have (on average 1.3721739130434782) internal successors, (789), 581 states have internal predecessors, (789), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2021-12-16 06:07:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 934 transitions. [2021-12-16 06:07:49,882 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 934 transitions. Word has length 30 [2021-12-16 06:07:49,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,882 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 934 transitions. [2021-12-16 06:07:49,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:49,883 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 934 transitions. [2021-12-16 06:07:49,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 06:07:49,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,884 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] [2021-12-16 06:07:49,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 06:07:49,884 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1222819339, now seen corresponding path program 1 times [2021-12-16 06:07:49,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878337666] [2021-12-16 06:07:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 06:07:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 06:07:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:49,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:49,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878337666] [2021-12-16 06:07:49,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878337666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:49,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348035718] [2021-12-16 06:07:49,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:49,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:49,979 INFO L87 Difference]: Start difference. First operand 659 states and 934 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:50,309 INFO L93 Difference]: Finished difference Result 680 states and 961 transitions. [2021-12-16 06:07:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:50,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-16 06:07:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:50,314 INFO L225 Difference]: With dead ends: 680 [2021-12-16 06:07:50,314 INFO L226 Difference]: Without dead ends: 680 [2021-12-16 06:07:50,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:50,316 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 670 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:50,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 951 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:50,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-12-16 06:07:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 659. [2021-12-16 06:07:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 575 states have (on average 1.3704347826086956) internal successors, (788), 581 states have internal predecessors, (788), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2021-12-16 06:07:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 933 transitions. [2021-12-16 06:07:50,332 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 933 transitions. Word has length 32 [2021-12-16 06:07:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:50,332 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 933 transitions. [2021-12-16 06:07:50,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 933 transitions. [2021-12-16 06:07:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 06:07:50,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:50,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:50,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 06:07:50,334 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash -663319401, now seen corresponding path program 1 times [2021-12-16 06:07:50,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:50,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304548304] [2021-12-16 06:07:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:50,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 06:07:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 06:07:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:50,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:50,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304548304] [2021-12-16 06:07:50,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304548304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:50,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:50,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:50,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338515521] [2021-12-16 06:07:50,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:50,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:50,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:50,401 INFO L87 Difference]: Start difference. First operand 659 states and 933 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:50,628 INFO L93 Difference]: Finished difference Result 688 states and 969 transitions. [2021-12-16 06:07:50,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:50,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-12-16 06:07:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:50,632 INFO L225 Difference]: With dead ends: 688 [2021-12-16 06:07:50,632 INFO L226 Difference]: Without dead ends: 676 [2021-12-16 06:07:50,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:50,633 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 395 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:50,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1504 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-12-16 06:07:50,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 657. [2021-12-16 06:07:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 574 states have (on average 1.3693379790940767) internal successors, (786), 580 states have internal predecessors, (786), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (84), 54 states have call predecessors, (84), 52 states have call successors, (84) [2021-12-16 06:07:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 929 transitions. [2021-12-16 06:07:50,650 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 929 transitions. Word has length 33 [2021-12-16 06:07:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:50,650 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 929 transitions. [2021-12-16 06:07:50,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 929 transitions. [2021-12-16 06:07:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 06:07:50,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:50,652 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] [2021-12-16 06:07:50,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 06:07:50,652 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2133265312, now seen corresponding path program 1 times [2021-12-16 06:07:50,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:50,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753364207] [2021-12-16 06:07:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:50,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 06:07:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 06:07:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:50,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:50,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753364207] [2021-12-16 06:07:50,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753364207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:50,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:50,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:50,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555698236] [2021-12-16 06:07:50,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:50,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:50,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:50,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:50,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:50,711 INFO L87 Difference]: Start difference. First operand 657 states and 929 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:50,977 INFO L93 Difference]: Finished difference Result 686 states and 965 transitions. [2021-12-16 06:07:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:50,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-16 06:07:50,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:50,980 INFO L225 Difference]: With dead ends: 686 [2021-12-16 06:07:50,980 INFO L226 Difference]: Without dead ends: 669 [2021-12-16 06:07:50,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:50,981 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 394 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:50,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1464 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-12-16 06:07:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 650. [2021-12-16 06:07:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 570 states have (on average 1.3701754385964913) internal successors, (781), 576 states have internal predecessors, (781), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (82), 52 states have call predecessors, (82), 50 states have call successors, (82) [2021-12-16 06:07:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 920 transitions. [2021-12-16 06:07:50,997 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 920 transitions. Word has length 32 [2021-12-16 06:07:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:50,997 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 920 transitions. [2021-12-16 06:07:50,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:50,998 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 920 transitions. [2021-12-16 06:07:50,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 06:07:50,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:50,999 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] [2021-12-16 06:07:50,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 06:07:50,999 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:51,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash -608614884, now seen corresponding path program 1 times [2021-12-16 06:07:51,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:51,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736550699] [2021-12-16 06:07:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:51,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:51,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:51,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736550699] [2021-12-16 06:07:51,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736550699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:51,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:51,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:51,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163436912] [2021-12-16 06:07:51,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:51,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:51,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:51,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:51,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:51,026 INFO L87 Difference]: Start difference. First operand 650 states and 920 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:51,041 INFO L93 Difference]: Finished difference Result 666 states and 931 transitions. [2021-12-16 06:07:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:51,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-16 06:07:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:51,044 INFO L225 Difference]: With dead ends: 666 [2021-12-16 06:07:51,045 INFO L226 Difference]: Without dead ends: 625 [2021-12-16 06:07:51,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:51,045 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 84 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:51,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 880 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-12-16 06:07:51,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 621. [2021-12-16 06:07:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 545 states have (on average 1.3688073394495412) internal successors, (746), 552 states have internal predecessors, (746), 55 states have call successors, (55), 21 states have call predecessors, (55), 20 states have return successors, (78), 48 states have call predecessors, (78), 48 states have call successors, (78) [2021-12-16 06:07:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 879 transitions. [2021-12-16 06:07:51,060 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 879 transitions. Word has length 30 [2021-12-16 06:07:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:51,060 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 879 transitions. [2021-12-16 06:07:51,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 879 transitions. [2021-12-16 06:07:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 06:07:51,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:51,061 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] [2021-12-16 06:07:51,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 06:07:51,062 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash -444205772, now seen corresponding path program 1 times [2021-12-16 06:07:51,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:51,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410012359] [2021-12-16 06:07:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:51,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:51,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:51,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410012359] [2021-12-16 06:07:51,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410012359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:51,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:51,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:51,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979394385] [2021-12-16 06:07:51,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:51,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:51,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:51,091 INFO L87 Difference]: Start difference. First operand 621 states and 879 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:51,126 INFO L93 Difference]: Finished difference Result 637 states and 896 transitions. [2021-12-16 06:07:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:51,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-16 06:07:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:51,129 INFO L225 Difference]: With dead ends: 637 [2021-12-16 06:07:51,129 INFO L226 Difference]: Without dead ends: 637 [2021-12-16 06:07:51,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:51,130 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 27 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:51,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1213 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-12-16 06:07:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 623. [2021-12-16 06:07:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 547 states have (on average 1.3674588665447898) internal successors, (748), 554 states have internal predecessors, (748), 55 states have call successors, (55), 21 states have call predecessors, (55), 20 states have return successors, (78), 48 states have call predecessors, (78), 48 states have call successors, (78) [2021-12-16 06:07:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 881 transitions. [2021-12-16 06:07:51,145 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 881 transitions. Word has length 30 [2021-12-16 06:07:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:51,145 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 881 transitions. [2021-12-16 06:07:51,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 881 transitions. [2021-12-16 06:07:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 06:07:51,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:51,146 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] [2021-12-16 06:07:51,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 06:07:51,147 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1157172862, now seen corresponding path program 1 times [2021-12-16 06:07:51,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:51,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498204979] [2021-12-16 06:07:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:51,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:51,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:51,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498204979] [2021-12-16 06:07:51,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498204979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:51,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:51,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:51,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297692072] [2021-12-16 06:07:51,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:51,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:51,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:51,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:51,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:51,177 INFO L87 Difference]: Start difference. First operand 623 states and 881 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:51,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:51,212 INFO L93 Difference]: Finished difference Result 639 states and 898 transitions. [2021-12-16 06:07:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:51,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-16 06:07:51,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:51,216 INFO L225 Difference]: With dead ends: 639 [2021-12-16 06:07:51,216 INFO L226 Difference]: Without dead ends: 639 [2021-12-16 06:07:51,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:51,217 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 28 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:51,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1217 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-12-16 06:07:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 623. [2021-12-16 06:07:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 547 states have (on average 1.3674588665447898) internal successors, (748), 554 states have internal predecessors, (748), 55 states have call successors, (55), 21 states have call predecessors, (55), 20 states have return successors, (78), 48 states have call predecessors, (78), 48 states have call successors, (78) [2021-12-16 06:07:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 881 transitions. [2021-12-16 06:07:51,233 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 881 transitions. Word has length 31 [2021-12-16 06:07:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:51,233 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 881 transitions. [2021-12-16 06:07:51,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 881 transitions. [2021-12-16 06:07:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:07:51,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:51,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:51,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 06:07:51,235 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:51,235 INFO L85 PathProgramCache]: Analyzing trace with hash 791167666, now seen corresponding path program 1 times [2021-12-16 06:07:51,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:51,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991202311] [2021-12-16 06:07:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:51,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:51,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:51,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991202311] [2021-12-16 06:07:51,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991202311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:51,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:51,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:51,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943908880] [2021-12-16 06:07:51,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:51,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:51,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:51,297 INFO L87 Difference]: Start difference. First operand 623 states and 881 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:51,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:51,527 INFO L93 Difference]: Finished difference Result 881 states and 1243 transitions. [2021-12-16 06:07:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:51,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-16 06:07:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:51,531 INFO L225 Difference]: With dead ends: 881 [2021-12-16 06:07:51,531 INFO L226 Difference]: Without dead ends: 881 [2021-12-16 06:07:51,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:51,533 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 162 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:51,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1133 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-12-16 06:07:51,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 702. [2021-12-16 06:07:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 622 states have (on average 1.3762057877813505) internal successors, (856), 630 states have internal predecessors, (856), 57 states have call successors, (57), 23 states have call predecessors, (57), 22 states have return successors, (80), 49 states have call predecessors, (80), 50 states have call successors, (80) [2021-12-16 06:07:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 993 transitions. [2021-12-16 06:07:51,551 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 993 transitions. Word has length 34 [2021-12-16 06:07:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:51,552 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 993 transitions. [2021-12-16 06:07:51,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 993 transitions. [2021-12-16 06:07:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 06:07:51,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:51,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:51,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 06:07:51,554 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1367133224, now seen corresponding path program 1 times [2021-12-16 06:07:51,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:51,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632192475] [2021-12-16 06:07:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:51,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 06:07:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:51,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:51,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632192475] [2021-12-16 06:07:51,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632192475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:51,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:51,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:51,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302548932] [2021-12-16 06:07:51,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:51,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:51,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:51,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:51,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:51,600 INFO L87 Difference]: Start difference. First operand 702 states and 993 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:51,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:51,753 INFO L93 Difference]: Finished difference Result 730 states and 1027 transitions. [2021-12-16 06:07:51,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:51,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-12-16 06:07:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:51,756 INFO L225 Difference]: With dead ends: 730 [2021-12-16 06:07:51,757 INFO L226 Difference]: Without dead ends: 717 [2021-12-16 06:07:51,757 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 [2021-12-16 06:07:51,757 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 85 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:51,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1396 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:51,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-12-16 06:07:51,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 700. [2021-12-16 06:07:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 621 states have (on average 1.3752012882447664) internal successors, (854), 629 states have internal predecessors, (854), 56 states have call successors, (56), 23 states have call predecessors, (56), 22 states have return successors, (79), 48 states have call predecessors, (79), 49 states have call successors, (79) [2021-12-16 06:07:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 989 transitions. [2021-12-16 06:07:51,774 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 989 transitions. Word has length 33 [2021-12-16 06:07:51,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:51,774 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 989 transitions. [2021-12-16 06:07:51,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 989 transitions. [2021-12-16 06:07:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:07:51,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:51,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:51,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 06:07:51,776 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:51,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:51,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1481962220, now seen corresponding path program 1 times [2021-12-16 06:07:51,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:51,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762668728] [2021-12-16 06:07:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:51,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:51,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:51,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762668728] [2021-12-16 06:07:51,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762668728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:51,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:51,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:51,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782467259] [2021-12-16 06:07:51,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:51,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:51,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:51,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:51,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:51,851 INFO L87 Difference]: Start difference. First operand 700 states and 989 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:52,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:52,211 INFO L93 Difference]: Finished difference Result 729 states and 1012 transitions. [2021-12-16 06:07:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:52,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-16 06:07:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:52,215 INFO L225 Difference]: With dead ends: 729 [2021-12-16 06:07:52,215 INFO L226 Difference]: Without dead ends: 729 [2021-12-16 06:07:52,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:52,216 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 721 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:52,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 935 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-12-16 06:07:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 691. [2021-12-16 06:07:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 612 states have (on average 1.3611111111111112) internal successors, (833), 620 states have internal predecessors, (833), 56 states have call successors, (56), 23 states have call predecessors, (56), 22 states have return successors, (79), 48 states have call predecessors, (79), 49 states have call successors, (79) [2021-12-16 06:07:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 968 transitions. [2021-12-16 06:07:52,234 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 968 transitions. Word has length 35 [2021-12-16 06:07:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:52,234 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 968 transitions. [2021-12-16 06:07:52,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 968 transitions. [2021-12-16 06:07:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 06:07:52,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:52,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:52,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 06:07:52,236 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1698462691, now seen corresponding path program 1 times [2021-12-16 06:07:52,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:52,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806048078] [2021-12-16 06:07:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:52,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 06:07:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:52,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:52,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806048078] [2021-12-16 06:07:52,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806048078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:52,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:52,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:52,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429218253] [2021-12-16 06:07:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:52,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:52,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:52,293 INFO L87 Difference]: Start difference. First operand 691 states and 968 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:52,450 INFO L93 Difference]: Finished difference Result 719 states and 1002 transitions. [2021-12-16 06:07:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:52,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-16 06:07:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:52,454 INFO L225 Difference]: With dead ends: 719 [2021-12-16 06:07:52,454 INFO L226 Difference]: Without dead ends: 706 [2021-12-16 06:07:52,454 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 [2021-12-16 06:07:52,455 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 85 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:52,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1383 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-12-16 06:07:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 689. [2021-12-16 06:07:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 611 states have (on average 1.3600654664484453) internal successors, (831), 619 states have internal predecessors, (831), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (78), 47 states have call predecessors, (78), 48 states have call successors, (78) [2021-12-16 06:07:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 964 transitions. [2021-12-16 06:07:52,473 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 964 transitions. Word has length 35 [2021-12-16 06:07:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:52,474 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 964 transitions. [2021-12-16 06:07:52,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 964 transitions. [2021-12-16 06:07:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-16 06:07:52,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:52,476 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] [2021-12-16 06:07:52,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 06:07:52,477 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:52,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1261225060, now seen corresponding path program 1 times [2021-12-16 06:07:52,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:52,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728324775] [2021-12-16 06:07:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:52,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:52,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:52,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728324775] [2021-12-16 06:07:52,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728324775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:52,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:52,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:52,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60950169] [2021-12-16 06:07:52,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:52,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:52,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:52,526 INFO L87 Difference]: Start difference. First operand 689 states and 964 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:52,563 INFO L93 Difference]: Finished difference Result 697 states and 975 transitions. [2021-12-16 06:07:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:52,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-16 06:07:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:52,566 INFO L225 Difference]: With dead ends: 697 [2021-12-16 06:07:52,566 INFO L226 Difference]: Without dead ends: 697 [2021-12-16 06:07:52,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:52,567 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 5 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:52,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 766 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-12-16 06:07:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2021-12-16 06:07:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 619 states have (on average 1.3602584814216478) internal successors, (842), 627 states have internal predecessors, (842), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (78), 47 states have call predecessors, (78), 48 states have call successors, (78) [2021-12-16 06:07:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 975 transitions. [2021-12-16 06:07:52,585 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 975 transitions. Word has length 37 [2021-12-16 06:07:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:52,585 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 975 transitions. [2021-12-16 06:07:52,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 975 transitions. [2021-12-16 06:07:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-16 06:07:52,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:52,587 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] [2021-12-16 06:07:52,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 06:07:52,587 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1320764659, now seen corresponding path program 1 times [2021-12-16 06:07:52,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:52,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847960119] [2021-12-16 06:07:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:52,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:52,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:52,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847960119] [2021-12-16 06:07:52,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847960119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:52,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:52,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:52,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605470959] [2021-12-16 06:07:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:52,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:52,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:52,632 INFO L87 Difference]: Start difference. First operand 697 states and 975 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:52,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:52,844 INFO L93 Difference]: Finished difference Result 719 states and 999 transitions. [2021-12-16 06:07:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:52,845 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 [2021-12-16 06:07:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:52,848 INFO L225 Difference]: With dead ends: 719 [2021-12-16 06:07:52,848 INFO L226 Difference]: Without dead ends: 704 [2021-12-16 06:07:52,848 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 [2021-12-16 06:07:52,848 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 96 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:52,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1705 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:52,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-12-16 06:07:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 697. [2021-12-16 06:07:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 619 states have (on average 1.3408723747980613) internal successors, (830), 627 states have internal predecessors, (830), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (78), 47 states have call predecessors, (78), 48 states have call successors, (78) [2021-12-16 06:07:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 963 transitions. [2021-12-16 06:07:52,863 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 963 transitions. Word has length 38 [2021-12-16 06:07:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:52,863 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 963 transitions. [2021-12-16 06:07:52,864 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) [2021-12-16 06:07:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 963 transitions. [2021-12-16 06:07:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-16 06:07:52,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:52,865 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] [2021-12-16 06:07:52,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 06:07:52,865 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:52,866 INFO L85 PathProgramCache]: Analyzing trace with hash -257120717, now seen corresponding path program 1 times [2021-12-16 06:07:52,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:52,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186275609] [2021-12-16 06:07:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:52,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:52,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:52,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186275609] [2021-12-16 06:07:52,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186275609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:52,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:52,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:52,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573268381] [2021-12-16 06:07:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:52,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:52,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:52,915 INFO L87 Difference]: Start difference. First operand 697 states and 963 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:53,291 INFO L93 Difference]: Finished difference Result 717 states and 983 transitions. [2021-12-16 06:07:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 06:07:53,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-16 06:07:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:53,294 INFO L225 Difference]: With dead ends: 717 [2021-12-16 06:07:53,294 INFO L226 Difference]: Without dead ends: 717 [2021-12-16 06:07:53,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-16 06:07:53,295 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 525 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:53,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 1399 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-12-16 06:07:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 707. [2021-12-16 06:07:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 626 states have (on average 1.3354632587859425) internal successors, (836), 637 states have internal predecessors, (836), 55 states have call successors, (55), 23 states have call predecessors, (55), 25 states have return successors, (82), 47 states have call predecessors, (82), 48 states have call successors, (82) [2021-12-16 06:07:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 973 transitions. [2021-12-16 06:07:53,311 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 973 transitions. Word has length 38 [2021-12-16 06:07:53,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:53,312 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 973 transitions. [2021-12-16 06:07:53,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 973 transitions. [2021-12-16 06:07:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 06:07:53,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:53,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:53,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 06:07:53,314 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:53,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1775362044, now seen corresponding path program 1 times [2021-12-16 06:07:53,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:53,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210475050] [2021-12-16 06:07:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:53,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 06:07:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:53,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:53,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210475050] [2021-12-16 06:07:53,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210475050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:53,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:53,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:53,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643172528] [2021-12-16 06:07:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:53,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:53,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:53,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:53,383 INFO L87 Difference]: Start difference. First operand 707 states and 973 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:53,600 INFO L93 Difference]: Finished difference Result 724 states and 990 transitions. [2021-12-16 06:07:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-12-16 06:07:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:53,603 INFO L225 Difference]: With dead ends: 724 [2021-12-16 06:07:53,603 INFO L226 Difference]: Without dead ends: 705 [2021-12-16 06:07:53,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:53,604 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 108 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:53,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1987 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-12-16 06:07:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 699. [2021-12-16 06:07:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 619 states have (on average 1.3344103392568658) internal successors, (826), 630 states have internal predecessors, (826), 54 states have call successors, (54), 23 states have call predecessors, (54), 25 states have return successors, (81), 46 states have call predecessors, (81), 47 states have call successors, (81) [2021-12-16 06:07:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 961 transitions. [2021-12-16 06:07:53,617 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 961 transitions. Word has length 39 [2021-12-16 06:07:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:53,618 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 961 transitions. [2021-12-16 06:07:53,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 961 transitions. [2021-12-16 06:07:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 06:07:53,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:53,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:53,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 06:07:53,620 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash 777524033, now seen corresponding path program 1 times [2021-12-16 06:07:53,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:53,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106320363] [2021-12-16 06:07:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:53,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:53,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:53,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:53,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106320363] [2021-12-16 06:07:53,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106320363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:53,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:53,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:53,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062808727] [2021-12-16 06:07:53,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:53,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:53,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:53,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:53,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:53,665 INFO L87 Difference]: Start difference. First operand 699 states and 961 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:53,903 INFO L93 Difference]: Finished difference Result 734 states and 1000 transitions. [2021-12-16 06:07:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:53,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-12-16 06:07:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:53,906 INFO L225 Difference]: With dead ends: 734 [2021-12-16 06:07:53,906 INFO L226 Difference]: Without dead ends: 709 [2021-12-16 06:07:53,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:53,906 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 343 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:53,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 1648 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-12-16 06:07:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 686. [2021-12-16 06:07:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 607 states have (on average 1.331136738056013) internal successors, (808), 618 states have internal predecessors, (808), 53 states have call successors, (53), 23 states have call predecessors, (53), 25 states have return successors, (80), 45 states have call predecessors, (80), 46 states have call successors, (80) [2021-12-16 06:07:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 941 transitions. [2021-12-16 06:07:53,919 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 941 transitions. Word has length 39 [2021-12-16 06:07:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:53,920 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 941 transitions. [2021-12-16 06:07:53,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 941 transitions. [2021-12-16 06:07:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 06:07:53,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:53,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:53,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 06:07:53,922 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1595982943, now seen corresponding path program 1 times [2021-12-16 06:07:53,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:53,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432012790] [2021-12-16 06:07:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:53,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:53,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:53,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432012790] [2021-12-16 06:07:53,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432012790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:53,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:53,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:53,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246048529] [2021-12-16 06:07:53,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:53,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:53,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:53,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:53,971 INFO L87 Difference]: Start difference. First operand 686 states and 941 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:54,206 INFO L93 Difference]: Finished difference Result 692 states and 947 transitions. [2021-12-16 06:07:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:54,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-12-16 06:07:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:54,209 INFO L225 Difference]: With dead ends: 692 [2021-12-16 06:07:54,209 INFO L226 Difference]: Without dead ends: 689 [2021-12-16 06:07:54,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:54,210 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 58 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:54,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1777 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-12-16 06:07:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 688. [2021-12-16 06:07:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 608 states have (on average 1.330592105263158) internal successors, (809), 620 states have internal predecessors, (809), 53 states have call successors, (53), 23 states have call predecessors, (53), 26 states have return successors, (81), 45 states have call predecessors, (81), 46 states have call successors, (81) [2021-12-16 06:07:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 943 transitions. [2021-12-16 06:07:54,224 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 943 transitions. Word has length 39 [2021-12-16 06:07:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:54,224 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 943 transitions. [2021-12-16 06:07:54,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 943 transitions. [2021-12-16 06:07:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 06:07:54,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:54,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:54,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 06:07:54,226 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:54,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:54,226 INFO L85 PathProgramCache]: Analyzing trace with hash -398634571, now seen corresponding path program 1 times [2021-12-16 06:07:54,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:54,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141486909] [2021-12-16 06:07:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:54,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:07:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:54,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:54,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141486909] [2021-12-16 06:07:54,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141486909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:54,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:54,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:54,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063084845] [2021-12-16 06:07:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:54,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:54,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:54,264 INFO L87 Difference]: Start difference. First operand 688 states and 943 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:54,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:54,489 INFO L93 Difference]: Finished difference Result 510 states and 668 transitions. [2021-12-16 06:07:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:54,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-16 06:07:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:54,491 INFO L225 Difference]: With dead ends: 510 [2021-12-16 06:07:54,491 INFO L226 Difference]: Without dead ends: 510 [2021-12-16 06:07:54,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:54,492 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 478 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:54,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 937 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:54,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-12-16 06:07:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 469. [2021-12-16 06:07:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 411 states have (on average 1.29683698296837) internal successors, (533), 422 states have internal predecessors, (533), 38 states have call successors, (38), 16 states have call predecessors, (38), 19 states have return successors, (45), 31 states have call predecessors, (45), 31 states have call successors, (45) [2021-12-16 06:07:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 616 transitions. [2021-12-16 06:07:54,504 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 616 transitions. Word has length 41 [2021-12-16 06:07:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:54,504 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 616 transitions. [2021-12-16 06:07:54,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 616 transitions. [2021-12-16 06:07:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-16 06:07:54,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:54,506 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] [2021-12-16 06:07:54,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 06:07:54,506 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1554772088, now seen corresponding path program 1 times [2021-12-16 06:07:54,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:54,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102198436] [2021-12-16 06:07:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:54,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:54,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:54,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102198436] [2021-12-16 06:07:54,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102198436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:54,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:54,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:54,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431533080] [2021-12-16 06:07:54,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:54,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:54,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:54,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:54,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:54,550 INFO L87 Difference]: Start difference. First operand 469 states and 616 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:54,745 INFO L93 Difference]: Finished difference Result 599 states and 783 transitions. [2021-12-16 06:07:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:54,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-16 06:07:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:54,748 INFO L225 Difference]: With dead ends: 599 [2021-12-16 06:07:54,748 INFO L226 Difference]: Without dead ends: 583 [2021-12-16 06:07:54,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:54,749 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 180 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:54,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 951 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-12-16 06:07:54,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 523. [2021-12-16 06:07:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 459 states have (on average 1.289760348583878) internal successors, (592), 464 states have internal predecessors, (592), 40 states have call successors, (40), 18 states have call predecessors, (40), 23 states have return successors, (57), 41 states have call predecessors, (57), 33 states have call successors, (57) [2021-12-16 06:07:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 689 transitions. [2021-12-16 06:07:54,760 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 689 transitions. Word has length 40 [2021-12-16 06:07:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:54,760 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 689 transitions. [2021-12-16 06:07:54,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 689 transitions. [2021-12-16 06:07:54,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-16 06:07:54,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:54,761 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] [2021-12-16 06:07:54,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-16 06:07:54,762 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:54,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:54,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2126401672, now seen corresponding path program 1 times [2021-12-16 06:07:54,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:54,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886022483] [2021-12-16 06:07:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:54,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:54,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:54,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886022483] [2021-12-16 06:07:54,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886022483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:54,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:54,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:54,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973265357] [2021-12-16 06:07:54,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:54,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:54,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:54,825 INFO L87 Difference]: Start difference. First operand 523 states and 689 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,130 INFO L93 Difference]: Finished difference Result 509 states and 674 transitions. [2021-12-16 06:07:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:55,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-16 06:07:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,132 INFO L225 Difference]: With dead ends: 509 [2021-12-16 06:07:55,132 INFO L226 Difference]: Without dead ends: 468 [2021-12-16 06:07:55,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:55,133 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 447 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:55,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 1040 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:55,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-12-16 06:07:55,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 447. [2021-12-16 06:07:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 391 states have (on average 1.3094629156010231) internal successors, (512), 403 states have internal predecessors, (512), 37 states have call successors, (37), 15 states have call predecessors, (37), 18 states have return successors, (45), 29 states have call predecessors, (45), 30 states have call successors, (45) [2021-12-16 06:07:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 594 transitions. [2021-12-16 06:07:55,142 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 594 transitions. Word has length 40 [2021-12-16 06:07:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:55,142 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 594 transitions. [2021-12-16 06:07:55,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 594 transitions. [2021-12-16 06:07:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 06:07:55,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 06:07:55,144 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1405383092, now seen corresponding path program 1 times [2021-12-16 06:07:55,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:55,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224724525] [2021-12-16 06:07:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:55,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:55,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224724525] [2021-12-16 06:07:55,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224724525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:55,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:55,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:55,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133117564] [2021-12-16 06:07:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:55,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:55,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:55,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:55,214 INFO L87 Difference]: Start difference. First operand 447 states and 594 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,504 INFO L93 Difference]: Finished difference Result 492 states and 657 transitions. [2021-12-16 06:07:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:55,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-16 06:07:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,507 INFO L225 Difference]: With dead ends: 492 [2021-12-16 06:07:55,507 INFO L226 Difference]: Without dead ends: 491 [2021-12-16 06:07:55,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:55,508 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 282 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:55,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1812 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:55,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-16 06:07:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 462. [2021-12-16 06:07:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 405 states have (on average 1.2987654320987654) internal successors, (526), 417 states have internal predecessors, (526), 37 states have call successors, (37), 15 states have call predecessors, (37), 19 states have return successors, (53), 30 states have call predecessors, (53), 30 states have call successors, (53) [2021-12-16 06:07:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 616 transitions. [2021-12-16 06:07:55,517 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 616 transitions. Word has length 41 [2021-12-16 06:07:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:55,517 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 616 transitions. [2021-12-16 06:07:55,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 616 transitions. [2021-12-16 06:07:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 06:07:55,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-16 06:07:55,519 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1405659922, now seen corresponding path program 1 times [2021-12-16 06:07:55,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:55,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702483909] [2021-12-16 06:07:55,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:55,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:55,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702483909] [2021-12-16 06:07:55,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702483909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:55,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:55,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:55,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460250019] [2021-12-16 06:07:55,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:55,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:55,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:55,574 INFO L87 Difference]: Start difference. First operand 462 states and 616 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:55,880 INFO L93 Difference]: Finished difference Result 479 states and 634 transitions. [2021-12-16 06:07:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:55,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-16 06:07:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:55,883 INFO L225 Difference]: With dead ends: 479 [2021-12-16 06:07:55,883 INFO L226 Difference]: Without dead ends: 469 [2021-12-16 06:07:55,884 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 [2021-12-16 06:07:55,884 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 78 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:55,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 1895 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:55,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-12-16 06:07:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 459. [2021-12-16 06:07:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 402 states have (on average 1.300995024875622) internal successors, (523), 415 states have internal predecessors, (523), 37 states have call successors, (37), 15 states have call predecessors, (37), 19 states have return successors, (52), 29 states have call predecessors, (52), 30 states have call successors, (52) [2021-12-16 06:07:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 612 transitions. [2021-12-16 06:07:55,894 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 612 transitions. Word has length 41 [2021-12-16 06:07:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:55,895 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 612 transitions. [2021-12-16 06:07:55,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 612 transitions. [2021-12-16 06:07:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 06:07:55,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:55,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:55,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-16 06:07:55,897 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:55,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:55,897 INFO L85 PathProgramCache]: Analyzing trace with hash 188020548, now seen corresponding path program 1 times [2021-12-16 06:07:55,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:55,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409615575] [2021-12-16 06:07:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:55,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 06:07:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:55,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:55,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409615575] [2021-12-16 06:07:55,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409615575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:55,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:55,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:55,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750587688] [2021-12-16 06:07:55,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:55,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:55,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:55,954 INFO L87 Difference]: Start difference. First operand 459 states and 612 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,322 INFO L93 Difference]: Finished difference Result 515 states and 681 transitions. [2021-12-16 06:07:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:56,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-16 06:07:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,324 INFO L225 Difference]: With dead ends: 515 [2021-12-16 06:07:56,325 INFO L226 Difference]: Without dead ends: 503 [2021-12-16 06:07:56,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:56,325 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 600 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1073 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-16 06:07:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 445. [2021-12-16 06:07:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 390 states have (on average 1.3076923076923077) internal successors, (510), 402 states have internal predecessors, (510), 36 states have call successors, (36), 15 states have call predecessors, (36), 18 states have return successors, (44), 28 states have call predecessors, (44), 29 states have call successors, (44) [2021-12-16 06:07:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 590 transitions. [2021-12-16 06:07:56,334 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 590 transitions. Word has length 42 [2021-12-16 06:07:56,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,335 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 590 transitions. [2021-12-16 06:07:56,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 590 transitions. [2021-12-16 06:07:56,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:07:56,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:56,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-16 06:07:56,337 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1315082489, now seen corresponding path program 1 times [2021-12-16 06:07:56,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414264312] [2021-12-16 06:07:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:07:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414264312] [2021-12-16 06:07:56,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414264312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:56,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891497547] [2021-12-16 06:07:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:56,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:56,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:56,446 INFO L87 Difference]: Start difference. First operand 445 states and 590 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,644 INFO L93 Difference]: Finished difference Result 405 states and 531 transitions. [2021-12-16 06:07:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:56,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-16 06:07:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,647 INFO L225 Difference]: With dead ends: 405 [2021-12-16 06:07:56,647 INFO L226 Difference]: Without dead ends: 405 [2021-12-16 06:07:56,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:56,648 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 102 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1754 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-16 06:07:56,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 399. [2021-12-16 06:07:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 350 states have (on average 1.2885714285714285) internal successors, (451), 358 states have internal predecessors, (451), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (39), 27 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-16 06:07:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 524 transitions. [2021-12-16 06:07:56,654 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 524 transitions. Word has length 44 [2021-12-16 06:07:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:56,655 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 524 transitions. [2021-12-16 06:07:56,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 524 transitions. [2021-12-16 06:07:56,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 06:07:56,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:56,656 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] [2021-12-16 06:07:56,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-16 06:07:56,657 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:56,657 INFO L85 PathProgramCache]: Analyzing trace with hash 817778302, now seen corresponding path program 1 times [2021-12-16 06:07:56,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:56,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981846283] [2021-12-16 06:07:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:56,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:07:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:56,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:56,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981846283] [2021-12-16 06:07:56,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981846283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:56,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:56,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:56,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752397015] [2021-12-16 06:07:56,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:56,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:56,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:56,724 INFO L87 Difference]: Start difference. First operand 399 states and 524 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:56,994 INFO L93 Difference]: Finished difference Result 405 states and 529 transitions. [2021-12-16 06:07:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:56,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-16 06:07:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:56,996 INFO L225 Difference]: With dead ends: 405 [2021-12-16 06:07:56,996 INFO L226 Difference]: Without dead ends: 405 [2021-12-16 06:07:56,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:56,997 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 390 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:56,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 1008 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:56,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-16 06:07:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 399. [2021-12-16 06:07:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 350 states have (on average 1.282857142857143) internal successors, (449), 358 states have internal predecessors, (449), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (39), 27 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-16 06:07:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 522 transitions. [2021-12-16 06:07:57,005 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 522 transitions. Word has length 46 [2021-12-16 06:07:57,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,005 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 522 transitions. [2021-12-16 06:07:57,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:57,005 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 522 transitions. [2021-12-16 06:07:57,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 06:07:57,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,006 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 06:07:57,007 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash 351110669, now seen corresponding path program 1 times [2021-12-16 06:07:57,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870677822] [2021-12-16 06:07:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870677822] [2021-12-16 06:07:57,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870677822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:57,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213367591] [2021-12-16 06:07:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:57,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:57,078 INFO L87 Difference]: Start difference. First operand 399 states and 522 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,370 INFO L93 Difference]: Finished difference Result 414 states and 537 transitions. [2021-12-16 06:07:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:57,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-16 06:07:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,372 INFO L225 Difference]: With dead ends: 414 [2021-12-16 06:07:57,372 INFO L226 Difference]: Without dead ends: 401 [2021-12-16 06:07:57,372 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 [2021-12-16 06:07:57,373 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 74 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1883 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-12-16 06:07:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 395. [2021-12-16 06:07:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 347 states have (on average 1.282420749279539) internal successors, (445), 355 states have internal predecessors, (445), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (38), 26 states have call predecessors, (38), 27 states have call successors, (38) [2021-12-16 06:07:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 516 transitions. [2021-12-16 06:07:57,380 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 516 transitions. Word has length 46 [2021-12-16 06:07:57,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,380 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 516 transitions. [2021-12-16 06:07:57,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:57,380 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 516 transitions. [2021-12-16 06:07:57,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:57,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 06:07:57,381 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2034007966, now seen corresponding path program 1 times [2021-12-16 06:07:57,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232221956] [2021-12-16 06:07:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 06:07:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232221956] [2021-12-16 06:07:57,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232221956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:57,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104940992] [2021-12-16 06:07:57,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:57,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:57,439 INFO L87 Difference]: Start difference. First operand 395 states and 516 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,749 INFO L93 Difference]: Finished difference Result 415 states and 537 transitions. [2021-12-16 06:07:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:57,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-12-16 06:07:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,754 INFO L225 Difference]: With dead ends: 415 [2021-12-16 06:07:57,754 INFO L226 Difference]: Without dead ends: 396 [2021-12-16 06:07:57,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:57,756 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 148 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1477 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-16 06:07:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 390. [2021-12-16 06:07:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 344 states have (on average 1.2819767441860466) internal successors, (441), 351 states have internal predecessors, (441), 32 states have call successors, (32), 13 states have call predecessors, (32), 13 states have return successors, (37), 26 states have call predecessors, (37), 26 states have call successors, (37) [2021-12-16 06:07:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 510 transitions. [2021-12-16 06:07:57,764 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 510 transitions. Word has length 48 [2021-12-16 06:07:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,764 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 510 transitions. [2021-12-16 06:07:57,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 510 transitions. [2021-12-16 06:07:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 06:07:57,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-16 06:07:57,766 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1900155685, now seen corresponding path program 1 times [2021-12-16 06:07:57,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955261552] [2021-12-16 06:07:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:07:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:57,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:57,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955261552] [2021-12-16 06:07:57,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955261552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:57,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:57,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:57,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20767328] [2021-12-16 06:07:57,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:57,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:57,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:57,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:57,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:57,815 INFO L87 Difference]: Start difference. First operand 390 states and 510 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:57,954 INFO L93 Difference]: Finished difference Result 475 states and 614 transitions. [2021-12-16 06:07:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:57,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-16 06:07:57,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:57,957 INFO L225 Difference]: With dead ends: 475 [2021-12-16 06:07:57,957 INFO L226 Difference]: Without dead ends: 475 [2021-12-16 06:07:57,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:57,958 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 189 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:57,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 849 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-12-16 06:07:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 443. [2021-12-16 06:07:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 392 states have (on average 1.280612244897959) internal successors, (502), 398 states have internal predecessors, (502), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (43), 30 states have call predecessors, (43), 29 states have call successors, (43) [2021-12-16 06:07:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 579 transitions. [2021-12-16 06:07:57,967 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 579 transitions. Word has length 49 [2021-12-16 06:07:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:57,968 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 579 transitions. [2021-12-16 06:07:57,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 579 transitions. [2021-12-16 06:07:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:57,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:57,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:57,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-16 06:07:57,969 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash 785908469, now seen corresponding path program 1 times [2021-12-16 06:07:57,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:57,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306893327] [2021-12-16 06:07:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:57,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:58,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:58,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306893327] [2021-12-16 06:07:58,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306893327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:58,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:58,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:58,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33510969] [2021-12-16 06:07:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:58,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:58,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:58,049 INFO L87 Difference]: Start difference. First operand 443 states and 579 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:58,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:58,193 INFO L93 Difference]: Finished difference Result 456 states and 595 transitions. [2021-12-16 06:07:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:58,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-16 06:07:58,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:58,195 INFO L225 Difference]: With dead ends: 456 [2021-12-16 06:07:58,195 INFO L226 Difference]: Without dead ends: 456 [2021-12-16 06:07:58,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:58,196 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 70 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:58,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1096 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-12-16 06:07:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 445. [2021-12-16 06:07:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 394 states have (on average 1.2791878172588833) internal successors, (504), 400 states have internal predecessors, (504), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (43), 30 states have call predecessors, (43), 29 states have call successors, (43) [2021-12-16 06:07:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 581 transitions. [2021-12-16 06:07:58,204 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 581 transitions. Word has length 48 [2021-12-16 06:07:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:58,205 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 581 transitions. [2021-12-16 06:07:58,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 581 transitions. [2021-12-16 06:07:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:58,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:58,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:58,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 06:07:58,207 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:58,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1427465013, now seen corresponding path program 1 times [2021-12-16 06:07:58,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:58,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133701909] [2021-12-16 06:07:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:58,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:58,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:58,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133701909] [2021-12-16 06:07:58,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133701909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:58,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:58,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:58,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225348158] [2021-12-16 06:07:58,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:58,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:58,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:58,268 INFO L87 Difference]: Start difference. First operand 445 states and 581 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:58,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:58,482 INFO L93 Difference]: Finished difference Result 433 states and 564 transitions. [2021-12-16 06:07:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:58,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-16 06:07:58,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:58,484 INFO L225 Difference]: With dead ends: 433 [2021-12-16 06:07:58,484 INFO L226 Difference]: Without dead ends: 419 [2021-12-16 06:07:58,484 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 [2021-12-16 06:07:58,485 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 55 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:58,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1884 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-16 06:07:58,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2021-12-16 06:07:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 369 states have (on average 1.2628726287262872) internal successors, (466), 373 states have internal predecessors, (466), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-16 06:07:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 539 transitions. [2021-12-16 06:07:58,492 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 539 transitions. Word has length 48 [2021-12-16 06:07:58,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:58,492 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 539 transitions. [2021-12-16 06:07:58,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 539 transitions. [2021-12-16 06:07:58,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 06:07:58,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:58,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:58,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-16 06:07:58,494 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:58,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash 827652383, now seen corresponding path program 1 times [2021-12-16 06:07:58,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:58,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180361193] [2021-12-16 06:07:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:58,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:07:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:58,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:58,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180361193] [2021-12-16 06:07:58,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180361193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:58,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:58,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:58,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428151087] [2021-12-16 06:07:58,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:58,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:58,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:58,562 INFO L87 Difference]: Start difference. First operand 417 states and 539 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:58,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:58,773 INFO L93 Difference]: Finished difference Result 446 states and 574 transitions. [2021-12-16 06:07:58,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:58,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-16 06:07:58,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:58,776 INFO L225 Difference]: With dead ends: 446 [2021-12-16 06:07:58,776 INFO L226 Difference]: Without dead ends: 446 [2021-12-16 06:07:58,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:58,776 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 81 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:58,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1660 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-12-16 06:07:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 417. [2021-12-16 06:07:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 369 states have (on average 1.2574525745257452) internal successors, (464), 373 states have internal predecessors, (464), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-16 06:07:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 537 transitions. [2021-12-16 06:07:58,782 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 537 transitions. Word has length 51 [2021-12-16 06:07:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:58,783 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 537 transitions. [2021-12-16 06:07:58,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 537 transitions. [2021-12-16 06:07:58,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 06:07:58,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:58,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:58,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-16 06:07:58,785 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:58,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash 141980076, now seen corresponding path program 1 times [2021-12-16 06:07:58,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:58,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735998939] [2021-12-16 06:07:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:58,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 06:07:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:58,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:58,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735998939] [2021-12-16 06:07:58,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735998939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:58,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:58,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:58,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467120034] [2021-12-16 06:07:58,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:58,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:58,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:58,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:58,841 INFO L87 Difference]: Start difference. First operand 417 states and 537 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:59,153 INFO L93 Difference]: Finished difference Result 435 states and 556 transitions. [2021-12-16 06:07:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:59,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-16 06:07:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:59,155 INFO L225 Difference]: With dead ends: 435 [2021-12-16 06:07:59,155 INFO L226 Difference]: Without dead ends: 419 [2021-12-16 06:07:59,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:59,156 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 82 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:59,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1833 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-16 06:07:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 413. [2021-12-16 06:07:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 366 states have (on average 1.2568306010928962) internal successors, (460), 370 states have internal predecessors, (460), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (40), 28 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-16 06:07:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 531 transitions. [2021-12-16 06:07:59,165 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 531 transitions. Word has length 51 [2021-12-16 06:07:59,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:59,166 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 531 transitions. [2021-12-16 06:07:59,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 531 transitions. [2021-12-16 06:07:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 06:07:59,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:59,167 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] [2021-12-16 06:07:59,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 06:07:59,168 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -646852178, now seen corresponding path program 1 times [2021-12-16 06:07:59,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:59,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115733107] [2021-12-16 06:07:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:59,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:07:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:59,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:59,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115733107] [2021-12-16 06:07:59,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115733107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:59,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:59,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:59,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185821270] [2021-12-16 06:07:59,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:59,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:59,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:59,227 INFO L87 Difference]: Start difference. First operand 413 states and 531 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:59,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:59,525 INFO L93 Difference]: Finished difference Result 431 states and 550 transitions. [2021-12-16 06:07:59,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:59,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-16 06:07:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:59,527 INFO L225 Difference]: With dead ends: 431 [2021-12-16 06:07:59,527 INFO L226 Difference]: Without dead ends: 414 [2021-12-16 06:07:59,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:59,528 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 82 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:59,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1795 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:59,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-12-16 06:07:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2021-12-16 06:07:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 362 states have (on average 1.2569060773480663) internal successors, (455), 366 states have internal predecessors, (455), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (39), 27 states have call predecessors, (39), 26 states have call successors, (39) [2021-12-16 06:07:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 524 transitions. [2021-12-16 06:07:59,534 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 524 transitions. Word has length 52 [2021-12-16 06:07:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:59,534 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 524 transitions. [2021-12-16 06:07:59,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:59,535 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 524 transitions. [2021-12-16 06:07:59,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 06:07:59,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:59,536 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] [2021-12-16 06:07:59,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-16 06:07:59,536 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:59,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash -403973580, now seen corresponding path program 1 times [2021-12-16 06:07:59,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:59,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394592565] [2021-12-16 06:07:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:59,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:59,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:07:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:59,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:59,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394592565] [2021-12-16 06:07:59,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394592565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:59,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:59,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:59,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314665808] [2021-12-16 06:07:59,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:59,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:59,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:59,593 INFO L87 Difference]: Start difference. First operand 408 states and 524 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:59,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:59,898 INFO L93 Difference]: Finished difference Result 426 states and 543 transitions. [2021-12-16 06:07:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:59,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-16 06:07:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:59,901 INFO L225 Difference]: With dead ends: 426 [2021-12-16 06:07:59,901 INFO L226 Difference]: Without dead ends: 410 [2021-12-16 06:07:59,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:59,901 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 82 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:59,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1749 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:07:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-12-16 06:07:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 404. [2021-12-16 06:07:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 359 states have (on average 1.256267409470752) internal successors, (451), 363 states have internal predecessors, (451), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-16 06:07:59,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 518 transitions. [2021-12-16 06:07:59,920 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 518 transitions. Word has length 52 [2021-12-16 06:07:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:59,920 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 518 transitions. [2021-12-16 06:07:59,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:59,921 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 518 transitions. [2021-12-16 06:07:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 06:07:59,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:59,923 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] [2021-12-16 06:07:59,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-16 06:07:59,923 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:59,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash 515113277, now seen corresponding path program 1 times [2021-12-16 06:07:59,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:59,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338126480] [2021-12-16 06:07:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:59,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 06:07:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:59,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:59,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338126480] [2021-12-16 06:07:59,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338126480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:59,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:59,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:59,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824332150] [2021-12-16 06:07:59,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:59,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:59,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:59,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:59,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:59,981 INFO L87 Difference]: Start difference. First operand 404 states and 518 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:00,238 INFO L93 Difference]: Finished difference Result 418 states and 532 transitions. [2021-12-16 06:08:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:08:00,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-16 06:08:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:00,240 INFO L225 Difference]: With dead ends: 418 [2021-12-16 06:08:00,240 INFO L226 Difference]: Without dead ends: 388 [2021-12-16 06:08:00,241 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 [2021-12-16 06:08:00,241 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 72 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:00,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1593 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-12-16 06:08:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 382. [2021-12-16 06:08:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 338 states have (on average 1.2603550295857988) internal successors, (426), 342 states have internal predecessors, (426), 28 states have call successors, (28), 15 states have call predecessors, (28), 15 states have return successors, (37), 25 states have call predecessors, (37), 24 states have call successors, (37) [2021-12-16 06:08:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 491 transitions. [2021-12-16 06:08:00,247 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 491 transitions. Word has length 52 [2021-12-16 06:08:00,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:00,248 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 491 transitions. [2021-12-16 06:08:00,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,249 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 491 transitions. [2021-12-16 06:08:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 06:08:00,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:00,250 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] [2021-12-16 06:08:00,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-16 06:08:00,250 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1195477270, now seen corresponding path program 1 times [2021-12-16 06:08:00,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:00,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937740400] [2021-12-16 06:08:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:00,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:00,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:00,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937740400] [2021-12-16 06:08:00,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937740400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:00,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:00,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:00,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726994949] [2021-12-16 06:08:00,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:00,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:00,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:00,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:00,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:00,340 INFO L87 Difference]: Start difference. First operand 382 states and 491 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:00,546 INFO L93 Difference]: Finished difference Result 514 states and 678 transitions. [2021-12-16 06:08:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:08:00,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-16 06:08:00,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:00,549 INFO L225 Difference]: With dead ends: 514 [2021-12-16 06:08:00,549 INFO L226 Difference]: Without dead ends: 514 [2021-12-16 06:08:00,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:08:00,549 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 133 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:00,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1682 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-16 06:08:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 382. [2021-12-16 06:08:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 338 states have (on average 1.257396449704142) internal successors, (425), 342 states have internal predecessors, (425), 28 states have call successors, (28), 15 states have call predecessors, (28), 15 states have return successors, (37), 25 states have call predecessors, (37), 24 states have call successors, (37) [2021-12-16 06:08:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 490 transitions. [2021-12-16 06:08:00,556 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 490 transitions. Word has length 54 [2021-12-16 06:08:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:00,558 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 490 transitions. [2021-12-16 06:08:00,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 490 transitions. [2021-12-16 06:08:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-16 06:08:00,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:00,561 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] [2021-12-16 06:08:00,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-16 06:08:00,562 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:00,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1693203453, now seen corresponding path program 1 times [2021-12-16 06:08:00,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:00,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394662521] [2021-12-16 06:08:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:00,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 06:08:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:00,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:00,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394662521] [2021-12-16 06:08:00,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394662521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:00,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:00,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:08:00,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672377974] [2021-12-16 06:08:00,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:00,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:08:00,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:00,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:08:00,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:08:00,624 INFO L87 Difference]: Start difference. First operand 382 states and 490 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:00,919 INFO L93 Difference]: Finished difference Result 400 states and 509 transitions. [2021-12-16 06:08:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:08:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-16 06:08:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:00,921 INFO L225 Difference]: With dead ends: 400 [2021-12-16 06:08:00,921 INFO L226 Difference]: Without dead ends: 366 [2021-12-16 06:08:00,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:08:00,921 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 90 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:00,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 1547 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:08:00,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-12-16 06:08:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 360. [2021-12-16 06:08:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 319 states have (on average 1.2570532915360502) internal successors, (401), 323 states have internal predecessors, (401), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (35), 23 states have call predecessors, (35), 22 states have call successors, (35) [2021-12-16 06:08:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 462 transitions. [2021-12-16 06:08:00,927 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 462 transitions. Word has length 56 [2021-12-16 06:08:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:00,927 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 462 transitions. [2021-12-16 06:08:00,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 462 transitions. [2021-12-16 06:08:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-16 06:08:00,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:00,928 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] [2021-12-16 06:08:00,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-16 06:08:00,929 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:00,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash 835021725, now seen corresponding path program 1 times [2021-12-16 06:08:00,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:00,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688096705] [2021-12-16 06:08:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:00,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:08:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:00,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:00,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688096705] [2021-12-16 06:08:00,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688096705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:00,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:00,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:00,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47650267] [2021-12-16 06:08:00,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:00,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:00,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:00,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:00,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:00,987 INFO L87 Difference]: Start difference. First operand 360 states and 462 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:01,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:01,183 INFO L93 Difference]: Finished difference Result 341 states and 429 transitions. [2021-12-16 06:08:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:08:01,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2021-12-16 06:08:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:01,185 INFO L225 Difference]: With dead ends: 341 [2021-12-16 06:08:01,185 INFO L226 Difference]: Without dead ends: 341 [2021-12-16 06:08:01,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:01,186 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 250 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:01,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 870 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-16 06:08:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 327. [2021-12-16 06:08:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 291 states have (on average 1.2577319587628866) internal successors, (366), 294 states have internal predecessors, (366), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23) [2021-12-16 06:08:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 412 transitions. [2021-12-16 06:08:01,191 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 412 transitions. Word has length 62 [2021-12-16 06:08:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:01,191 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 412 transitions. [2021-12-16 06:08:01,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 412 transitions. [2021-12-16 06:08:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 06:08:01,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:01,192 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] [2021-12-16 06:08:01,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-16 06:08:01,192 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:01,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1659041663, now seen corresponding path program 1 times [2021-12-16 06:08:01,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:01,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197042584] [2021-12-16 06:08:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:01,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:08:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:01,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:01,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197042584] [2021-12-16 06:08:01,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197042584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:01,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:01,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:08:01,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997090465] [2021-12-16 06:08:01,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:01,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:08:01,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:08:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:01,281 INFO L87 Difference]: Start difference. First operand 327 states and 412 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:01,608 INFO L93 Difference]: Finished difference Result 371 states and 466 transitions. [2021-12-16 06:08:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 06:08:01,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 66 [2021-12-16 06:08:01,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:01,610 INFO L225 Difference]: With dead ends: 371 [2021-12-16 06:08:01,610 INFO L226 Difference]: Without dead ends: 355 [2021-12-16 06:08:01,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-16 06:08:01,611 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 290 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:01,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1487 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:08:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-12-16 06:08:01,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2021-12-16 06:08:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 298 states have (on average 1.2516778523489933) internal successors, (373), 301 states have internal predecessors, (373), 23 states have call successors, (23), 13 states have call predecessors, (23), 13 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2021-12-16 06:08:01,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 422 transitions. [2021-12-16 06:08:01,615 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 422 transitions. Word has length 66 [2021-12-16 06:08:01,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:01,616 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 422 transitions. [2021-12-16 06:08:01,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:01,616 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 422 transitions. [2021-12-16 06:08:01,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 06:08:01,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:01,618 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] [2021-12-16 06:08:01,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-16 06:08:01,618 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:01,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1959206108, now seen corresponding path program 1 times [2021-12-16 06:08:01,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:01,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493067572] [2021-12-16 06:08:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:01,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:08:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 06:08:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 06:08:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:01,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493067572] [2021-12-16 06:08:01,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493067572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:01,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:01,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:08:01,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485387229] [2021-12-16 06:08:01,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:01,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:08:01,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:08:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:08:01,687 INFO L87 Difference]: Start difference. First operand 335 states and 422 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:02,056 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2021-12-16 06:08:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:08:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2021-12-16 06:08:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:02,058 INFO L225 Difference]: With dead ends: 454 [2021-12-16 06:08:02,059 INFO L226 Difference]: Without dead ends: 454 [2021-12-16 06:08:02,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:08:02,059 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 539 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:02,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1062 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:08:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-12-16 06:08:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 429. [2021-12-16 06:08:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 382 states have (on average 1.2408376963350785) internal successors, (474), 387 states have internal predecessors, (474), 25 states have call successors, (25), 19 states have call predecessors, (25), 21 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-16 06:08:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 527 transitions. [2021-12-16 06:08:02,066 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 527 transitions. Word has length 68 [2021-12-16 06:08:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:02,066 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 527 transitions. [2021-12-16 06:08:02,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 527 transitions. [2021-12-16 06:08:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-16 06:08:02,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:02,068 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] [2021-12-16 06:08:02,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-16 06:08:02,068 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:02,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash 377679953, now seen corresponding path program 1 times [2021-12-16 06:08:02,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:02,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140156704] [2021-12-16 06:08:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:02,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:08:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 06:08:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:02,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:02,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140156704] [2021-12-16 06:08:02,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140156704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:02,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:02,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:08:02,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125474260] [2021-12-16 06:08:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:02,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:08:02,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:08:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:02,146 INFO L87 Difference]: Start difference. First operand 429 states and 527 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:02,420 INFO L93 Difference]: Finished difference Result 459 states and 559 transitions. [2021-12-16 06:08:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 06:08:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2021-12-16 06:08:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:02,422 INFO L225 Difference]: With dead ends: 459 [2021-12-16 06:08:02,422 INFO L226 Difference]: Without dead ends: 443 [2021-12-16 06:08:02,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:08:02,423 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 91 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:02,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 1761 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-16 06:08:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 421. [2021-12-16 06:08:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 375 states have (on average 1.2426666666666666) internal successors, (466), 380 states have internal predecessors, (466), 25 states have call successors, (25), 19 states have call predecessors, (25), 20 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2021-12-16 06:08:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 517 transitions. [2021-12-16 06:08:02,430 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 517 transitions. Word has length 67 [2021-12-16 06:08:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:02,430 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 517 transitions. [2021-12-16 06:08:02,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 517 transitions. [2021-12-16 06:08:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-16 06:08:02,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:02,432 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] [2021-12-16 06:08:02,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-16 06:08:02,432 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:02,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2019693577, now seen corresponding path program 1 times [2021-12-16 06:08:02,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:02,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554876159] [2021-12-16 06:08:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:02,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:08:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 06:08:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:08:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:02,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:02,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554876159] [2021-12-16 06:08:02,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554876159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:02,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:02,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 06:08:02,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474030644] [2021-12-16 06:08:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:02,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 06:08:02,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 06:08:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:08:02,532 INFO L87 Difference]: Start difference. First operand 421 states and 517 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:08:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:02,955 INFO L93 Difference]: Finished difference Result 420 states and 515 transitions. [2021-12-16 06:08:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:08:02,955 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2021-12-16 06:08:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:02,956 INFO L225 Difference]: With dead ends: 420 [2021-12-16 06:08:02,956 INFO L226 Difference]: Without dead ends: 346 [2021-12-16 06:08:02,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-12-16 06:08:02,957 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 193 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:02,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1429 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 06:08:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-12-16 06:08:02,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-12-16 06:08:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 307 states have (on average 1.247557003257329) internal successors, (383), 311 states have internal predecessors, (383), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2021-12-16 06:08:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 427 transitions. [2021-12-16 06:08:02,963 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 427 transitions. Word has length 69 [2021-12-16 06:08:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:02,963 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 427 transitions. [2021-12-16 06:08:02,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 06:08:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 427 transitions. [2021-12-16 06:08:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 06:08:02,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:02,964 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] [2021-12-16 06:08:02,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-16 06:08:02,965 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:02,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:02,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2013543144, now seen corresponding path program 1 times [2021-12-16 06:08:02,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:02,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270302781] [2021-12-16 06:08:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:02,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 06:08:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:03,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270302781] [2021-12-16 06:08:03,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270302781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:03,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:03,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:08:03,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120374565] [2021-12-16 06:08:03,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:03,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:08:03,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:08:03,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:08:03,036 INFO L87 Difference]: Start difference. First operand 346 states and 427 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:03,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:03,187 INFO L93 Difference]: Finished difference Result 398 states and 491 transitions. [2021-12-16 06:08:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:08:03,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2021-12-16 06:08:03,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:03,188 INFO L225 Difference]: With dead ends: 398 [2021-12-16 06:08:03,189 INFO L226 Difference]: Without dead ends: 373 [2021-12-16 06:08:03,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:08:03,189 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 106 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:03,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1112 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-16 06:08:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 357. [2021-12-16 06:08:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 317 states have (on average 1.22397476340694) internal successors, (388), 322 states have internal predecessors, (388), 22 states have call successors, (22), 16 states have call predecessors, (22), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2021-12-16 06:08:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 433 transitions. [2021-12-16 06:08:03,203 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 433 transitions. Word has length 71 [2021-12-16 06:08:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:03,203 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 433 transitions. [2021-12-16 06:08:03,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 433 transitions. [2021-12-16 06:08:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 06:08:03,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:03,205 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:03,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-16 06:08:03,205 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash -291513568, now seen corresponding path program 1 times [2021-12-16 06:08:03,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:03,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731056313] [2021-12-16 06:08:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:03,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 06:08:03,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:03,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731056313] [2021-12-16 06:08:03,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731056313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:03,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:03,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:08:03,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984107117] [2021-12-16 06:08:03,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:03,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:08:03,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:08:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:03,277 INFO L87 Difference]: Start difference. First operand 357 states and 433 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:08:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:03,379 INFO L93 Difference]: Finished difference Result 392 states and 476 transitions. [2021-12-16 06:08:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2021-12-16 06:08:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:03,382 INFO L225 Difference]: With dead ends: 392 [2021-12-16 06:08:03,382 INFO L226 Difference]: Without dead ends: 392 [2021-12-16 06:08:03,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:08:03,383 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 77 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:03,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1229 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-16 06:08:03,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 265. [2021-12-16 06:08:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 234 states have (on average 1.1794871794871795) internal successors, (276), 238 states have internal predecessors, (276), 16 states have call successors, (16), 12 states have call predecessors, (16), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-16 06:08:03,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 311 transitions. [2021-12-16 06:08:03,389 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 311 transitions. Word has length 74 [2021-12-16 06:08:03,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:03,389 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 311 transitions. [2021-12-16 06:08:03,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:08:03,390 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 311 transitions. [2021-12-16 06:08:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-16 06:08:03,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:03,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:03,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-16 06:08:03,390 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1369005511, now seen corresponding path program 1 times [2021-12-16 06:08:03,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:03,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683552949] [2021-12-16 06:08:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:03,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 06:08:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 06:08:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:03,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:03,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683552949] [2021-12-16 06:08:03,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683552949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:03,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:03,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:08:03,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792704690] [2021-12-16 06:08:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:03,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:08:03,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:08:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:08:03,467 INFO L87 Difference]: Start difference. First operand 265 states and 311 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:03,727 INFO L93 Difference]: Finished difference Result 494 states and 579 transitions. [2021-12-16 06:08:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:08:03,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2021-12-16 06:08:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:03,728 INFO L225 Difference]: With dead ends: 494 [2021-12-16 06:08:03,728 INFO L226 Difference]: Without dead ends: 444 [2021-12-16 06:08:03,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-12-16 06:08:03,729 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 370 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:03,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1277 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-16 06:08:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 191. [2021-12-16 06:08:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 171 states have (on average 1.1578947368421053) internal successors, (198), 173 states have internal predecessors, (198), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:08:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 217 transitions. [2021-12-16 06:08:03,733 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 217 transitions. Word has length 77 [2021-12-16 06:08:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:03,734 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 217 transitions. [2021-12-16 06:08:03,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 217 transitions. [2021-12-16 06:08:03,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-16 06:08:03,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:03,736 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] [2021-12-16 06:08:03,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-16 06:08:03,736 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:03,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash 586260984, now seen corresponding path program 1 times [2021-12-16 06:08:03,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:03,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926423758] [2021-12-16 06:08:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:03,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 06:08:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:03,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:03,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926423758] [2021-12-16 06:08:03,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926423758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:03,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:03,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:08:03,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348398185] [2021-12-16 06:08:03,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:03,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:08:03,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:08:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:08:03,789 INFO L87 Difference]: Start difference. First operand 191 states and 217 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:03,870 INFO L93 Difference]: Finished difference Result 199 states and 225 transitions. [2021-12-16 06:08:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:08:03,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2021-12-16 06:08:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:03,871 INFO L225 Difference]: With dead ends: 199 [2021-12-16 06:08:03,871 INFO L226 Difference]: Without dead ends: 197 [2021-12-16 06:08:03,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:03,872 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 25 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:03,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 611 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-16 06:08:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2021-12-16 06:08:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 171 states have (on average 1.152046783625731) internal successors, (197), 173 states have internal predecessors, (197), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:08:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 216 transitions. [2021-12-16 06:08:03,875 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 216 transitions. Word has length 83 [2021-12-16 06:08:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:03,876 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 216 transitions. [2021-12-16 06:08:03,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:08:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 216 transitions. [2021-12-16 06:08:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 06:08:03,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:03,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:03,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-16 06:08:03,877 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:03,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash 727590310, now seen corresponding path program 1 times [2021-12-16 06:08:03,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:03,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107041688] [2021-12-16 06:08:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:03,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 06:08:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 06:08:03,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:03,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107041688] [2021-12-16 06:08:03,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107041688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:03,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:03,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:08:03,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456759771] [2021-12-16 06:08:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:03,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:08:03,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:08:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:08:03,939 INFO L87 Difference]: Start difference. First operand 191 states and 216 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:04,008 INFO L93 Difference]: Finished difference Result 221 states and 250 transitions. [2021-12-16 06:08:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:08:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2021-12-16 06:08:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:04,010 INFO L225 Difference]: With dead ends: 221 [2021-12-16 06:08:04,010 INFO L226 Difference]: Without dead ends: 221 [2021-12-16 06:08:04,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:04,011 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 67 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:04,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 578 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-16 06:08:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 193. [2021-12-16 06:08:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 173 states have (on average 1.1502890173410405) internal successors, (199), 175 states have internal predecessors, (199), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:08:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 218 transitions. [2021-12-16 06:08:04,017 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 218 transitions. Word has length 103 [2021-12-16 06:08:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:04,018 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 218 transitions. [2021-12-16 06:08:04,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 218 transitions. [2021-12-16 06:08:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 06:08:04,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:04,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:04,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-16 06:08:04,019 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1604320614, now seen corresponding path program 1 times [2021-12-16 06:08:04,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:04,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107023040] [2021-12-16 06:08:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:04,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 06:08:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 06:08:04,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:04,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107023040] [2021-12-16 06:08:04,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107023040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:04,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:04,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:08:04,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142170407] [2021-12-16 06:08:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:04,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:08:04,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:08:04,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:08:04,124 INFO L87 Difference]: Start difference. First operand 193 states and 218 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:04,295 INFO L93 Difference]: Finished difference Result 230 states and 261 transitions. [2021-12-16 06:08:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:08:04,296 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2021-12-16 06:08:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:04,296 INFO L225 Difference]: With dead ends: 230 [2021-12-16 06:08:04,297 INFO L226 Difference]: Without dead ends: 197 [2021-12-16 06:08:04,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-12-16 06:08:04,297 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 303 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:04,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 845 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:04,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-16 06:08:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2021-12-16 06:08:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 173 states have internal predecessors, (195), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:08:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2021-12-16 06:08:04,300 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 103 [2021-12-16 06:08:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:04,300 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2021-12-16 06:08:04,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2021-12-16 06:08:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-16 06:08:04,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:04,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:04,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-16 06:08:04,302 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash -247821256, now seen corresponding path program 1 times [2021-12-16 06:08:04,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:04,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793564195] [2021-12-16 06:08:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:04,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 06:08:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 06:08:04,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793564195] [2021-12-16 06:08:04,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793564195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:04,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:04,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:08:04,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183511084] [2021-12-16 06:08:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:04,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:08:04,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:08:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:08:04,431 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:04,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:04,753 INFO L93 Difference]: Finished difference Result 296 states and 340 transitions. [2021-12-16 06:08:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 06:08:04,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 104 [2021-12-16 06:08:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:04,754 INFO L225 Difference]: With dead ends: 296 [2021-12-16 06:08:04,754 INFO L226 Difference]: Without dead ends: 265 [2021-12-16 06:08:04,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2021-12-16 06:08:04,755 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 467 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:04,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 1476 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-12-16 06:08:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 206. [2021-12-16 06:08:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 185 states have (on average 1.145945945945946) internal successors, (212), 187 states have internal predecessors, (212), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-16 06:08:04,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 232 transitions. [2021-12-16 06:08:04,760 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 232 transitions. Word has length 104 [2021-12-16 06:08:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:04,760 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 232 transitions. [2021-12-16 06:08:04,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 232 transitions. [2021-12-16 06:08:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 06:08:04,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:04,761 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:04,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-16 06:08:04,762 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:04,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:04,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2004323598, now seen corresponding path program 1 times [2021-12-16 06:08:04,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:04,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910536080] [2021-12-16 06:08:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:04,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 06:08:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 06:08:04,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:04,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910536080] [2021-12-16 06:08:04,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910536080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:04,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:04,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:08:04,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023819832] [2021-12-16 06:08:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:04,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:08:04,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:08:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:08:04,891 INFO L87 Difference]: Start difference. First operand 206 states and 232 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:05,089 INFO L93 Difference]: Finished difference Result 223 states and 251 transitions. [2021-12-16 06:08:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:08:05,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 105 [2021-12-16 06:08:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:05,090 INFO L225 Difference]: With dead ends: 223 [2021-12-16 06:08:05,091 INFO L226 Difference]: Without dead ends: 220 [2021-12-16 06:08:05,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-16 06:08:05,091 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 30 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:05,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1715 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-16 06:08:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 206. [2021-12-16 06:08:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 185 states have (on average 1.1405405405405404) internal successors, (211), 187 states have internal predecessors, (211), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-16 06:08:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 231 transitions. [2021-12-16 06:08:05,095 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 231 transitions. Word has length 105 [2021-12-16 06:08:05,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:05,095 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 231 transitions. [2021-12-16 06:08:05,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:05,095 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 231 transitions. [2021-12-16 06:08:05,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 06:08:05,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:05,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:05,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-16 06:08:05,097 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:05,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:05,097 INFO L85 PathProgramCache]: Analyzing trace with hash -629299870, now seen corresponding path program 1 times [2021-12-16 06:08:05,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:05,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739522395] [2021-12-16 06:08:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:05,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 06:08:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 06:08:05,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:05,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739522395] [2021-12-16 06:08:05,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739522395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:05,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:05,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:08:05,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603932095] [2021-12-16 06:08:05,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:05,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:08:05,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:08:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:08:05,162 INFO L87 Difference]: Start difference. First operand 206 states and 231 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:05,234 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2021-12-16 06:08:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:08:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 108 [2021-12-16 06:08:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:05,235 INFO L225 Difference]: With dead ends: 207 [2021-12-16 06:08:05,235 INFO L226 Difference]: Without dead ends: 198 [2021-12-16 06:08:05,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:08:05,236 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 169 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:05,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 300 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-16 06:08:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 184. [2021-12-16 06:08:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 164 states have (on average 1.1219512195121952) internal successors, (184), 166 states have internal predecessors, (184), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:08:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 203 transitions. [2021-12-16 06:08:05,239 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 203 transitions. Word has length 108 [2021-12-16 06:08:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:05,239 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 203 transitions. [2021-12-16 06:08:05,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:08:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 203 transitions. [2021-12-16 06:08:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-16 06:08:05,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:05,240 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:05,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-16 06:08:05,241 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 809951383, now seen corresponding path program 1 times [2021-12-16 06:08:05,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:05,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534849483] [2021-12-16 06:08:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:05,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 06:08:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 06:08:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 06:08:05,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:05,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534849483] [2021-12-16 06:08:05,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534849483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:05,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:05,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:08:05,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146683692] [2021-12-16 06:08:05,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:05,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:08:05,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:08:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:08:05,337 INFO L87 Difference]: Start difference. First operand 184 states and 203 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:08:05,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:05,445 INFO L93 Difference]: Finished difference Result 173 states and 189 transitions. [2021-12-16 06:08:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:08:05,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 114 [2021-12-16 06:08:05,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:05,455 INFO L225 Difference]: With dead ends: 173 [2021-12-16 06:08:05,455 INFO L226 Difference]: Without dead ends: 163 [2021-12-16 06:08:05,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:08:05,456 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 46 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:05,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 756 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:05,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-16 06:08:05,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-12-16 06:08:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 147 states have internal predecessors, (162), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-16 06:08:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 178 transitions. [2021-12-16 06:08:05,459 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 178 transitions. Word has length 114 [2021-12-16 06:08:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:05,460 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 178 transitions. [2021-12-16 06:08:05,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:08:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 178 transitions. [2021-12-16 06:08:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 06:08:05,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:05,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:05,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-16 06:08:05,461 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:05,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1384297966, now seen corresponding path program 1 times [2021-12-16 06:08:05,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:05,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222948873] [2021-12-16 06:08:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:05,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 06:08:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 06:08:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 06:08:05,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:05,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222948873] [2021-12-16 06:08:05,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222948873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:05,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:05,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:08:05,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398996072] [2021-12-16 06:08:05,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:05,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:08:05,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:05,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:08:05,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:08:05,565 INFO L87 Difference]: Start difference. First operand 163 states and 178 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 6 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:08:05,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:05,792 INFO L93 Difference]: Finished difference Result 284 states and 309 transitions. [2021-12-16 06:08:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:08:05,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 6 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 115 [2021-12-16 06:08:05,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:05,793 INFO L225 Difference]: With dead ends: 284 [2021-12-16 06:08:05,793 INFO L226 Difference]: Without dead ends: 163 [2021-12-16 06:08:05,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-12-16 06:08:05,794 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 130 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:05,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 913 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:05,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-16 06:08:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-12-16 06:08:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 146 states have (on average 1.1027397260273972) internal successors, (161), 147 states have internal predecessors, (161), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-16 06:08:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 177 transitions. [2021-12-16 06:08:05,805 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 177 transitions. Word has length 115 [2021-12-16 06:08:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:05,805 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 177 transitions. [2021-12-16 06:08:05,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 6 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:08:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 177 transitions. [2021-12-16 06:08:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 06:08:05,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:05,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:05,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-16 06:08:05,806 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:08:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:05,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1263306388, now seen corresponding path program 1 times [2021-12-16 06:08:05,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:08:05,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371689340] [2021-12-16 06:08:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:05,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:08:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:08:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:08:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 06:08:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 06:08:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 06:08:05,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:08:05,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371689340] [2021-12-16 06:08:05,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371689340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:05,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:05,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 06:08:05,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682184155] [2021-12-16 06:08:05,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:05,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 06:08:05,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:08:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 06:08:05,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:08:05,940 INFO L87 Difference]: Start difference. First operand 163 states and 177 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:08:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:06,217 INFO L93 Difference]: Finished difference Result 173 states and 190 transitions. [2021-12-16 06:08:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 06:08:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 115 [2021-12-16 06:08:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:06,218 INFO L225 Difference]: With dead ends: 173 [2021-12-16 06:08:06,218 INFO L226 Difference]: Without dead ends: 0 [2021-12-16 06:08:06,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2021-12-16 06:08:06,218 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 398 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:06,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 676 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:08:06,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-16 06:08:06,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-16 06:08:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:08:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-16 06:08:06,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2021-12-16 06:08:06,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:06,219 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 06:08:06,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:08:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-16 06:08:06,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-16 06:08:06,221 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-16 06:08:06,222 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-16 06:08:06,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-16 06:08:06,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:06,228 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 06:08:06,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:08:06 BoogieIcfgContainer [2021-12-16 06:08:06,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 06:08:06,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 06:08:06,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 06:08:06,240 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 06:08:06,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:47" (3/4) ... [2021-12-16 06:08:06,243 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 06:08:06,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-12-16 06:08:06,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2021-12-16 06:08:06,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-12-16 06:08:06,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-12-16 06:08:06,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-12-16 06:08:06,252 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlQueueIrpToThread [2021-12-16 06:08:06,252 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyCreateClose [2021-12-16 06:08:06,276 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2021-12-16 06:08:06,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2021-12-16 06:08:06,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-16 06:08:06,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-16 06:08:06,405 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 06:08:06,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 06:08:06,407 INFO L158 Benchmark]: Toolchain (without parser) took 20716.53ms. Allocated memory was 92.3MB in the beginning and 226.5MB in the end (delta: 134.2MB). Free memory was 55.5MB in the beginning and 120.4MB in the end (delta: -64.9MB). Peak memory consumption was 71.0MB. Max. memory is 16.1GB. [2021-12-16 06:08:06,407 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 06:08:06,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.81ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 55.3MB in the beginning and 91.8MB in the end (delta: -36.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-12-16 06:08:06,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.04ms. Allocated memory is still 125.8MB. Free memory was 91.8MB in the beginning and 85.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-16 06:08:06,408 INFO L158 Benchmark]: Boogie Preprocessor took 83.88ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 81.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 06:08:06,408 INFO L158 Benchmark]: RCFGBuilder took 1157.36ms. Allocated memory is still 125.8MB. Free memory was 81.3MB in the beginning and 87.6MB in the end (delta: -6.3MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2021-12-16 06:08:06,408 INFO L158 Benchmark]: TraceAbstraction took 18713.55ms. Allocated memory was 125.8MB in the beginning and 226.5MB in the end (delta: 100.7MB). Free memory was 87.0MB in the beginning and 146.9MB in the end (delta: -60.0MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2021-12-16 06:08:06,408 INFO L158 Benchmark]: Witness Printer took 165.40ms. Allocated memory is still 226.5MB. Free memory was 146.9MB in the beginning and 120.4MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-16 06:08:06,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.81ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 55.3MB in the beginning and 91.8MB in the end (delta: -36.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.04ms. Allocated memory is still 125.8MB. Free memory was 91.8MB in the beginning and 85.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.88ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 81.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1157.36ms. Allocated memory is still 125.8MB. Free memory was 81.3MB in the beginning and 87.6MB in the end (delta: -6.3MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18713.55ms. Allocated memory was 125.8MB in the beginning and 226.5MB in the end (delta: 100.7MB). Free memory was 87.0MB in the beginning and 146.9MB in the end (delta: -60.0MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Witness Printer took 165.40ms. Allocated memory is still 226.5MB. Free memory was 146.9MB in the beginning and 120.4MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 667]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 319 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 18.6s, OverallIterations: 61, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13788 SdHoareTripleChecker+Valid, 10.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13500 mSDsluCounter, 75341 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54825 mSDsCounter, 2216 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17519 IncrementalHoareTripleChecker+Invalid, 19735 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2216 mSolverCounterUnsat, 20516 mSDtfsCounter, 17519 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 740 GetRequests, 276 SyntacticMatches, 2 SemanticMatches, 462 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=707occurred in iteration=21, InterpolantAutomatonStates: 454, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 61 MinimizatonAttempts, 1602 StatesRemovedByMinimization, 55 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 3167 NumberOfCodeBlocks, 3167 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 3106 ConstructedInterpolants, 0 QuantifiedInterpolants, 6942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 61 InterpolantComputations, 61 PerfectInterpolantSequences, 140/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-16 06:08:06,448 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