./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:44:49,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:44:49,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:44:49,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:44:49,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:44:49,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:44:49,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:44:49,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:44:49,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:44:49,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:44:49,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:44:49,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:44:49,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:44:49,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:44:49,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:44:49,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:44:49,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:44:49,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:44:49,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:44:49,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:44:49,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:44:49,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:44:49,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:44:49,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:44:49,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:44:49,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:44:49,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:44:49,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:44:49,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:44:49,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:44:49,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:44:49,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:44:49,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:44:49,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:44:49,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:44:49,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:44:49,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:44:49,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:44:49,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:44:49,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:44:49,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:44:49,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:44:49,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:44:49,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:44:49,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:44:49,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:44:49,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:44:49,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:44:49,353 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:44:49,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:44:49,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:44:49,354 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:44:49,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:44:49,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:44:49,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:44:49,357 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:44:49,357 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:44:49,357 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:44:49,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:44:49,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:44:49,358 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:44:49,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:44:49,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:44:49,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:44:49,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:44:49,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:44:49,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:44:49,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:44:49,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:44:49,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:44:49,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:44:49,364 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa [2021-10-28 08:44:49,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:44:49,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:44:49,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:44:49,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:44:49,745 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:44:49,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-10-28 08:44:49,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/data/de2d7f5f2/eb7ea6b8da8d4cd7a043b2fbc5f6f94f/FLAG025fce692 [2021-10-28 08:44:50,466 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:44:50,466 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-10-28 08:44:50,483 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/data/de2d7f5f2/eb7ea6b8da8d4cd7a043b2fbc5f6f94f/FLAG025fce692 [2021-10-28 08:44:50,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/data/de2d7f5f2/eb7ea6b8da8d4cd7a043b2fbc5f6f94f [2021-10-28 08:44:50,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:44:50,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:44:50,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:44:50,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:44:50,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:44:50,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:44:50" (1/1) ... [2021-10-28 08:44:50,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1172a9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:50, skipping insertion in model container [2021-10-28 08:44:50,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:44:50" (1/1) ... [2021-10-28 08:44:50,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:44:50,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:44:51,019 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2021-10-28 08:44:51,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:44:51,253 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:44:51,270 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2021-10-28 08:44:51,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:44:51,366 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:44:51,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51 WrapperNode [2021-10-28 08:44:51,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:44:51,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:44:51,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:44:51,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:44:51,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (1/1) ... [2021-10-28 08:44:51,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (1/1) ... [2021-10-28 08:44:51,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (1/1) ... [2021-10-28 08:44:51,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (1/1) ... [2021-10-28 08:44:51,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (1/1) ... [2021-10-28 08:44:51,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (1/1) ... [2021-10-28 08:44:51,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (1/1) ... [2021-10-28 08:44:51,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:44:51,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:44:51,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:44:51,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:44:51,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (1/1) ... [2021-10-28 08:44:51,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:44:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:51,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:44:51,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:44:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:44:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:44:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:44:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-10-28 08:44:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-10-28 08:44:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2021-10-28 08:44:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-10-28 08:44:51,647 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2021-10-28 08:44:51,647 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2021-10-28 08:44:51,648 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2021-10-28 08:44:51,648 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2021-10-28 08:44:51,648 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2021-10-28 08:44:51,648 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-10-28 08:44:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:44:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2021-10-28 08:44:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2021-10-28 08:44:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2021-10-28 08:44:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2021-10-28 08:44:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-10-28 08:44:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-10-28 08:44:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-10-28 08:44:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-10-28 08:44:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-10-28 08:44:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-10-28 08:44:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2021-10-28 08:44:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2021-10-28 08:44:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2021-10-28 08:44:51,651 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-10-28 08:44:51,651 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:44:51,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:44:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:44:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:44:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-28 08:44:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:44:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-10-28 08:44:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2021-10-28 08:44:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-10-28 08:44:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2021-10-28 08:44:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2021-10-28 08:44:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2021-10-28 08:44:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2021-10-28 08:44:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2021-10-28 08:44:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2021-10-28 08:44:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2021-10-28 08:44:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2021-10-28 08:44:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-10-28 08:44:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-10-28 08:44:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-10-28 08:44:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-10-28 08:44:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2021-10-28 08:44:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2021-10-28 08:44:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2021-10-28 08:44:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-10-28 08:44:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-10-28 08:44:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-10-28 08:44:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2021-10-28 08:44:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-10-28 08:44:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:44:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-10-28 08:44:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-10-28 08:44:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:44:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:44:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:44:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:44:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:44:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:44:52,003 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,043 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 08:44:52,044 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 08:44:52,056 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,070 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 08:44:52,070 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 08:44:52,080 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,321 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-10-28 08:44:52,321 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-10-28 08:44:52,325 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,395 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-10-28 08:44:52,395 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-10-28 08:44:52,410 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,428 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-10-28 08:44:52,429 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-10-28 08:44:52,590 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,597 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 08:44:52,598 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 08:44:52,598 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,614 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 08:44:52,614 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 08:44:52,614 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,623 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 08:44:52,623 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 08:44:52,710 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,753 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-10-28 08:44:52,753 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-10-28 08:44:52,812 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,829 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 08:44:52,830 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 08:44:52,830 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,838 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 08:44:52,838 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 08:44:52,838 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:44:52,847 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 08:44:52,848 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 08:44:52,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:44:52,896 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 08:44:52,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:44:52 BoogieIcfgContainer [2021-10-28 08:44:52,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:44:52,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:44:52,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:44:52,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:44:52,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:44:50" (1/3) ... [2021-10-28 08:44:52,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383c804f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:44:52, skipping insertion in model container [2021-10-28 08:44:52,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:44:51" (2/3) ... [2021-10-28 08:44:52,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383c804f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:44:52, skipping insertion in model container [2021-10-28 08:44:52,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:44:52" (3/3) ... [2021-10-28 08:44:52,916 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2021-10-28 08:44:52,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:44:52,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 08:44:53,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:44:53,064 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 [2021-10-28 08:44:53,064 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 08:44:53,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 221 states have (on average 1.4253393665158371) internal successors, (315), 244 states have internal predecessors, (315), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2021-10-28 08:44:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 08:44:53,104 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:44:53,105 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:53,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:44:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:53,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2120787036, now seen corresponding path program 1 times [2021-10-28 08:44:53,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:53,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251076973] [2021-10-28 08:44:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:53,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:44:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:53,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:44:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:53,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:53,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251076973] [2021-10-28 08:44:53,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251076973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:44:53,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:44:53,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:44:53,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110476388] [2021-10-28 08:44:53,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:44:53,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:53,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:44:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:44:53,727 INFO L87 Difference]: Start difference. First operand has 305 states, 221 states have (on average 1.4253393665158371) internal successors, (315), 244 states have internal predecessors, (315), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 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) [2021-10-28 08:44:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:54,805 INFO L93 Difference]: Finished difference Result 329 states and 449 transitions. [2021-10-28 08:44:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:44:54,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 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 15 [2021-10-28 08:44:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:44:54,841 INFO L225 Difference]: With dead ends: 329 [2021-10-28 08:44:54,843 INFO L226 Difference]: Without dead ends: 322 [2021-10-28 08:44:54,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:44:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-28 08:44:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 292. [2021-10-28 08:44:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 213 states have (on average 1.375586854460094) internal successors, (293), 233 states have internal predecessors, (293), 56 states have call successors, (56), 24 states have call predecessors, (56), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-10-28 08:44:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 386 transitions. [2021-10-28 08:44:54,958 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 386 transitions. Word has length 15 [2021-10-28 08:44:54,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:44:54,959 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 386 transitions. [2021-10-28 08:44:54,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 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) [2021-10-28 08:44:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 386 transitions. [2021-10-28 08:44:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:44:54,969 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:44:54,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:54,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:44:54,970 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:44:54,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:54,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1263023814, now seen corresponding path program 1 times [2021-10-28 08:44:54,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:54,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813890381] [2021-10-28 08:44:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:54,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:55,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:44:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:55,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:44:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:55,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:55,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813890381] [2021-10-28 08:44:55,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813890381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:44:55,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:44:55,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:44:55,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158843939] [2021-10-28 08:44:55,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:44:55,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:44:55,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:44:55,281 INFO L87 Difference]: Start difference. First operand 292 states and 386 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:44:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:56,374 INFO L93 Difference]: Finished difference Result 322 states and 432 transitions. [2021-10-28 08:44:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:44:56,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-10-28 08:44:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:44:56,380 INFO L225 Difference]: With dead ends: 322 [2021-10-28 08:44:56,380 INFO L226 Difference]: Without dead ends: 322 [2021-10-28 08:44:56,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:44:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-28 08:44:56,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 292. [2021-10-28 08:44:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 213 states have (on average 1.3708920187793427) internal successors, (292), 233 states have internal predecessors, (292), 56 states have call successors, (56), 24 states have call predecessors, (56), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-10-28 08:44:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 385 transitions. [2021-10-28 08:44:56,405 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 385 transitions. Word has length 20 [2021-10-28 08:44:56,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:44:56,406 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 385 transitions. [2021-10-28 08:44:56,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:44:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 385 transitions. [2021-10-28 08:44:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:44:56,408 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:44:56,408 INFO L513 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] [2021-10-28 08:44:56,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:44:56,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:44:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1377431699, now seen corresponding path program 1 times [2021-10-28 08:44:56,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:56,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903805901] [2021-10-28 08:44:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:56,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:44:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:44:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:44:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:56,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:56,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903805901] [2021-10-28 08:44:56,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903805901] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:44:56,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:44:56,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:44:56,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812664945] [2021-10-28 08:44:56,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:44:56,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:56,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:44:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:44:56,714 INFO L87 Difference]: Start difference. First operand 292 states and 385 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:44:58,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:58,967 INFO L93 Difference]: Finished difference Result 477 states and 636 transitions. [2021-10-28 08:44:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:44:58,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-10-28 08:44:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:44:58,974 INFO L225 Difference]: With dead ends: 477 [2021-10-28 08:44:58,974 INFO L226 Difference]: Without dead ends: 476 [2021-10-28 08:44:58,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:44:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-28 08:44:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 429. [2021-10-28 08:44:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 328 states have (on average 1.3140243902439024) internal successors, (431), 334 states have internal predecessors, (431), 65 states have call successors, (65), 37 states have call predecessors, (65), 35 states have return successors, (74), 59 states have call predecessors, (74), 54 states have call successors, (74) [2021-10-28 08:44:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 570 transitions. [2021-10-28 08:44:59,007 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 570 transitions. Word has length 28 [2021-10-28 08:44:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:44:59,008 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 570 transitions. [2021-10-28 08:44:59,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:44:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 570 transitions. [2021-10-28 08:44:59,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 08:44:59,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:44:59,010 INFO L513 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] [2021-10-28 08:44:59,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:44:59,011 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:44:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1586729981, now seen corresponding path program 1 times [2021-10-28 08:44:59,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:59,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947234726] [2021-10-28 08:44:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:59,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:44:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:44:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:44:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:44:59,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:59,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947234726] [2021-10-28 08:44:59,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947234726] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:44:59,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:44:59,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:44:59,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877340285] [2021-10-28 08:44:59,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:44:59,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:44:59,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:44:59,296 INFO L87 Difference]: Start difference. First operand 429 states and 570 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:45:00,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:00,423 INFO L93 Difference]: Finished difference Result 675 states and 900 transitions. [2021-10-28 08:45:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:45:00,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-10-28 08:45:00,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:00,434 INFO L225 Difference]: With dead ends: 675 [2021-10-28 08:45:00,435 INFO L226 Difference]: Without dead ends: 675 [2021-10-28 08:45:00,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:00,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-10-28 08:45:00,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 632. [2021-10-28 08:45:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 493 states have (on average 1.3144016227180528) internal successors, (648), 497 states have internal predecessors, (648), 85 states have call successors, (85), 55 states have call predecessors, (85), 53 states have return successors, (112), 81 states have call predecessors, (112), 76 states have call successors, (112) [2021-10-28 08:45:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 845 transitions. [2021-10-28 08:45:00,506 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 845 transitions. Word has length 30 [2021-10-28 08:45:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:00,507 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 845 transitions. [2021-10-28 08:45:00,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:45:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 845 transitions. [2021-10-28 08:45:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 08:45:00,512 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:00,513 INFO L513 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] [2021-10-28 08:45:00,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:45:00,513 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:00,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -962074547, now seen corresponding path program 1 times [2021-10-28 08:45:00,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:00,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361955060] [2021-10-28 08:45:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:00,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:00,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:00,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361955060] [2021-10-28 08:45:00,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361955060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:00,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:00,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:45:00,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352477137] [2021-10-28 08:45:00,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:45:00,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:45:00,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:00,809 INFO L87 Difference]: Start difference. First operand 632 states and 845 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:45:02,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:02,042 INFO L93 Difference]: Finished difference Result 721 states and 953 transitions. [2021-10-28 08:45:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:45:02,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-10-28 08:45:02,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:02,051 INFO L225 Difference]: With dead ends: 721 [2021-10-28 08:45:02,052 INFO L226 Difference]: Without dead ends: 721 [2021-10-28 08:45:02,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-10-28 08:45:02,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 670. [2021-10-28 08:45:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 525 states have (on average 1.3161904761904761) internal successors, (691), 535 states have internal predecessors, (691), 86 states have call successors, (86), 57 states have call predecessors, (86), 58 states have return successors, (117), 80 states have call predecessors, (117), 78 states have call successors, (117) [2021-10-28 08:45:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 894 transitions. [2021-10-28 08:45:02,090 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 894 transitions. Word has length 34 [2021-10-28 08:45:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:02,091 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 894 transitions. [2021-10-28 08:45:02,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:45:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 894 transitions. [2021-10-28 08:45:02,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 08:45:02,102 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:02,103 INFO L513 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] [2021-10-28 08:45:02,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:45:02,103 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:02,104 INFO L85 PathProgramCache]: Analyzing trace with hash 82742685, now seen corresponding path program 1 times [2021-10-28 08:45:02,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:02,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560821686] [2021-10-28 08:45:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:02,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:02,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 08:45:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:02,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:02,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560821686] [2021-10-28 08:45:02,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560821686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:02,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:02,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 08:45:02,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656035295] [2021-10-28 08:45:02,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:45:02,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:02,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:45:02,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:45:02,467 INFO L87 Difference]: Start difference. First operand 670 states and 894 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 08:45:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:04,102 INFO L93 Difference]: Finished difference Result 696 states and 924 transitions. [2021-10-28 08:45:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:45:04,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2021-10-28 08:45:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:04,116 INFO L225 Difference]: With dead ends: 696 [2021-10-28 08:45:04,117 INFO L226 Difference]: Without dead ends: 696 [2021-10-28 08:45:04,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-10-28 08:45:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 674. [2021-10-28 08:45:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 528 states have (on average 1.3143939393939394) internal successors, (694), 538 states have internal predecessors, (694), 86 states have call successors, (86), 57 states have call predecessors, (86), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2021-10-28 08:45:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 898 transitions. [2021-10-28 08:45:04,173 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 898 transitions. Word has length 41 [2021-10-28 08:45:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:04,174 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 898 transitions. [2021-10-28 08:45:04,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 08:45:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 898 transitions. [2021-10-28 08:45:04,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 08:45:04,177 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:04,177 INFO L513 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] [2021-10-28 08:45:04,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:45:04,178 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:04,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash -127535261, now seen corresponding path program 1 times [2021-10-28 08:45:04,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:04,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92842260] [2021-10-28 08:45:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:04,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:04,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:04,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92842260] [2021-10-28 08:45:04,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92842260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:04,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:04,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:45:04,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448373552] [2021-10-28 08:45:04,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:45:04,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:45:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:04,461 INFO L87 Difference]: Start difference. First operand 674 states and 898 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:45:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:05,434 INFO L93 Difference]: Finished difference Result 698 states and 928 transitions. [2021-10-28 08:45:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:45:05,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-10-28 08:45:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:05,442 INFO L225 Difference]: With dead ends: 698 [2021-10-28 08:45:05,442 INFO L226 Difference]: Without dead ends: 698 [2021-10-28 08:45:05,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:45:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-10-28 08:45:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 685. [2021-10-28 08:45:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 539 states have (on average 1.313543599257885) internal successors, (708), 548 states have internal predecessors, (708), 86 states have call successors, (86), 58 states have call predecessors, (86), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2021-10-28 08:45:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 912 transitions. [2021-10-28 08:45:05,478 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 912 transitions. Word has length 40 [2021-10-28 08:45:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:05,479 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 912 transitions. [2021-10-28 08:45:05,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 08:45:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 912 transitions. [2021-10-28 08:45:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 08:45:05,481 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:05,481 INFO L513 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] [2021-10-28 08:45:05,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:45:05,481 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1411662583, now seen corresponding path program 1 times [2021-10-28 08:45:05,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:05,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888202438] [2021-10-28 08:45:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:05,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:45:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:05,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:05,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888202438] [2021-10-28 08:45:05,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888202438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:05,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:05,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:45:05,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127849758] [2021-10-28 08:45:05,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:45:05,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:45:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:05,767 INFO L87 Difference]: Start difference. First operand 685 states and 912 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:07,229 INFO L93 Difference]: Finished difference Result 747 states and 988 transitions. [2021-10-28 08:45:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:45:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2021-10-28 08:45:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:07,236 INFO L225 Difference]: With dead ends: 747 [2021-10-28 08:45:07,236 INFO L226 Difference]: Without dead ends: 747 [2021-10-28 08:45:07,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:45:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-10-28 08:45:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-10-28 08:45:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3091872791519434) internal successors, (741), 578 states have internal predecessors, (741), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-10-28 08:45:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 951 transitions. [2021-10-28 08:45:07,273 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 951 transitions. Word has length 41 [2021-10-28 08:45:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:07,276 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 951 transitions. [2021-10-28 08:45:07,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 951 transitions. [2021-10-28 08:45:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-28 08:45:07,279 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:07,280 INFO L513 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] [2021-10-28 08:45:07,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:45:07,281 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:07,281 INFO L85 PathProgramCache]: Analyzing trace with hash -359990476, now seen corresponding path program 1 times [2021-10-28 08:45:07,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:07,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223598890] [2021-10-28 08:45:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:07,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:45:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:07,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:07,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223598890] [2021-10-28 08:45:07,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223598890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:07,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:07,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:07,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295481655] [2021-10-28 08:45:07,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:07,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:07,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:07,735 INFO L87 Difference]: Start difference. First operand 718 states and 951 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:45:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:09,695 INFO L93 Difference]: Finished difference Result 747 states and 987 transitions. [2021-10-28 08:45:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:45:09,696 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-10-28 08:45:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:09,701 INFO L225 Difference]: With dead ends: 747 [2021-10-28 08:45:09,701 INFO L226 Difference]: Without dead ends: 747 [2021-10-28 08:45:09,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-10-28 08:45:09,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-10-28 08:45:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-10-28 08:45:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3074204946996466) internal successors, (740), 578 states have internal predecessors, (740), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-10-28 08:45:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 950 transitions. [2021-10-28 08:45:09,727 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 950 transitions. Word has length 42 [2021-10-28 08:45:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:09,728 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 950 transitions. [2021-10-28 08:45:09,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:45:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 950 transitions. [2021-10-28 08:45:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-28 08:45:09,729 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:09,730 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:09,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:45:09,730 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:09,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash 864804566, now seen corresponding path program 1 times [2021-10-28 08:45:09,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:09,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17257735] [2021-10-28 08:45:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:09,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:09,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:45:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:10,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:10,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17257735] [2021-10-28 08:45:10,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17257735] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:10,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:10,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:10,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489444455] [2021-10-28 08:45:10,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:10,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:10,070 INFO L87 Difference]: Start difference. First operand 718 states and 950 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:45:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:11,343 INFO L93 Difference]: Finished difference Result 747 states and 986 transitions. [2021-10-28 08:45:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:45:11,345 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2021-10-28 08:45:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:11,350 INFO L225 Difference]: With dead ends: 747 [2021-10-28 08:45:11,351 INFO L226 Difference]: Without dead ends: 747 [2021-10-28 08:45:11,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-10-28 08:45:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-10-28 08:45:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 718. [2021-10-28 08:45:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 566 states have (on average 1.3056537102473498) internal successors, (739), 578 states have internal predecessors, (739), 86 states have call successors, (86), 58 states have call predecessors, (86), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2021-10-28 08:45:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 949 transitions. [2021-10-28 08:45:11,378 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 949 transitions. Word has length 43 [2021-10-28 08:45:11,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:11,379 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 949 transitions. [2021-10-28 08:45:11,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:45:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 949 transitions. [2021-10-28 08:45:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 08:45:11,380 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:11,380 INFO L513 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] [2021-10-28 08:45:11,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:45:11,381 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash 484799798, now seen corresponding path program 1 times [2021-10-28 08:45:11,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:11,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159045984] [2021-10-28 08:45:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:11,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:11,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 08:45:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:11,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:11,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159045984] [2021-10-28 08:45:11,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159045984] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:11,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:11,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:45:11,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678671212] [2021-10-28 08:45:11,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:45:11,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:45:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:45:11,569 INFO L87 Difference]: Start difference. First operand 718 states and 949 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 08:45:13,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:13,154 INFO L93 Difference]: Finished difference Result 1090 states and 1456 transitions. [2021-10-28 08:45:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:45:13,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-10-28 08:45:13,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:13,162 INFO L225 Difference]: With dead ends: 1090 [2021-10-28 08:45:13,162 INFO L226 Difference]: Without dead ends: 1090 [2021-10-28 08:45:13,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-10-28 08:45:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 831. [2021-10-28 08:45:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 657 states have (on average 1.3135464231354643) internal successors, (863), 671 states have internal predecessors, (863), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (144), 93 states have call predecessors, (144), 88 states have call successors, (144) [2021-10-28 08:45:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1103 transitions. [2021-10-28 08:45:13,202 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1103 transitions. Word has length 44 [2021-10-28 08:45:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:13,202 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1103 transitions. [2021-10-28 08:45:13,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 08:45:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1103 transitions. [2021-10-28 08:45:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 08:45:13,204 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:13,204 INFO L513 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] [2021-10-28 08:45:13,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 08:45:13,205 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1122912541, now seen corresponding path program 1 times [2021-10-28 08:45:13,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:13,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389152390] [2021-10-28 08:45:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:13,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:13,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:45:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:13,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:13,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389152390] [2021-10-28 08:45:13,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389152390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:13,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:13,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 08:45:13,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440549680] [2021-10-28 08:45:13,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:45:13,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:13,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:45:13,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:13,486 INFO L87 Difference]: Start difference. First operand 831 states and 1103 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:14,924 INFO L93 Difference]: Finished difference Result 871 states and 1151 transitions. [2021-10-28 08:45:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:45:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2021-10-28 08:45:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:14,935 INFO L225 Difference]: With dead ends: 871 [2021-10-28 08:45:14,935 INFO L226 Difference]: Without dead ends: 856 [2021-10-28 08:45:14,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-10-28 08:45:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 829. [2021-10-28 08:45:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 656 states have (on average 1.3125) internal successors, (861), 670 states have internal predecessors, (861), 95 states have call successors, (95), 68 states have call predecessors, (95), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2021-10-28 08:45:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1099 transitions. [2021-10-28 08:45:14,967 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1099 transitions. Word has length 44 [2021-10-28 08:45:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:14,967 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1099 transitions. [2021-10-28 08:45:14,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1099 transitions. [2021-10-28 08:45:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 08:45:14,969 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:14,969 INFO L513 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] [2021-10-28 08:45:14,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 08:45:14,969 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1906062941, now seen corresponding path program 1 times [2021-10-28 08:45:14,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:14,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080172911] [2021-10-28 08:45:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:14,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:15,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 08:45:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:15,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:15,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080172911] [2021-10-28 08:45:15,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080172911] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:15,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:15,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 08:45:15,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313932202] [2021-10-28 08:45:15,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:45:15,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:15,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:45:15,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:15,252 INFO L87 Difference]: Start difference. First operand 829 states and 1099 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 08:45:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:16,811 INFO L93 Difference]: Finished difference Result 874 states and 1141 transitions. [2021-10-28 08:45:16,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:16,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2021-10-28 08:45:16,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:16,817 INFO L225 Difference]: With dead ends: 874 [2021-10-28 08:45:16,817 INFO L226 Difference]: Without dead ends: 874 [2021-10-28 08:45:16,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-10-28 08:45:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-28 08:45:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 820. [2021-10-28 08:45:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 647 states have (on average 1.2982998454404946) internal successors, (840), 661 states have internal predecessors, (840), 95 states have call successors, (95), 68 states have call predecessors, (95), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2021-10-28 08:45:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1078 transitions. [2021-10-28 08:45:16,849 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1078 transitions. Word has length 45 [2021-10-28 08:45:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:16,850 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1078 transitions. [2021-10-28 08:45:16,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 08:45:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1078 transitions. [2021-10-28 08:45:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-28 08:45:16,851 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:16,852 INFO L513 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] [2021-10-28 08:45:16,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 08:45:16,852 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1924856002, now seen corresponding path program 1 times [2021-10-28 08:45:16,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:16,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554144218] [2021-10-28 08:45:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:16,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:16,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-10-28 08:45:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:17,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:17,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554144218] [2021-10-28 08:45:17,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554144218] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:17,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:17,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:45:17,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124715298] [2021-10-28 08:45:17,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:45:17,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:45:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:17,089 INFO L87 Difference]: Start difference. First operand 820 states and 1078 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 08:45:18,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:18,514 INFO L93 Difference]: Finished difference Result 580 states and 730 transitions. [2021-10-28 08:45:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:45:18,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-10-28 08:45:18,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:18,518 INFO L225 Difference]: With dead ends: 580 [2021-10-28 08:45:18,518 INFO L226 Difference]: Without dead ends: 580 [2021-10-28 08:45:18,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:45:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-28 08:45:18,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 528. [2021-10-28 08:45:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 416 states have (on average 1.2740384615384615) internal successors, (530), 427 states have internal predecessors, (530), 62 states have call successors, (62), 43 states have call predecessors, (62), 49 states have return successors, (75), 59 states have call predecessors, (75), 54 states have call successors, (75) [2021-10-28 08:45:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 667 transitions. [2021-10-28 08:45:18,536 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 667 transitions. Word has length 49 [2021-10-28 08:45:18,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:18,537 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 667 transitions. [2021-10-28 08:45:18,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 08:45:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 667 transitions. [2021-10-28 08:45:18,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 08:45:18,539 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:18,539 INFO L513 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] [2021-10-28 08:45:18,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 08:45:18,539 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash -6834350, now seen corresponding path program 1 times [2021-10-28 08:45:18,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:18,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579546418] [2021-10-28 08:45:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:18,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:18,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-28 08:45:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:18,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 08:45:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:18,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:18,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579546418] [2021-10-28 08:45:18,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579546418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:18,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:18,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:45:18,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385109938] [2021-10-28 08:45:18,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:45:18,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:45:18,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:18,780 INFO L87 Difference]: Start difference. First operand 528 states and 667 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 08:45:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:19,604 INFO L93 Difference]: Finished difference Result 569 states and 720 transitions. [2021-10-28 08:45:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:45:19,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2021-10-28 08:45:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:19,609 INFO L225 Difference]: With dead ends: 569 [2021-10-28 08:45:19,609 INFO L226 Difference]: Without dead ends: 569 [2021-10-28 08:45:19,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:19,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-10-28 08:45:19,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 542. [2021-10-28 08:45:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.275058275058275) internal successors, (547), 440 states have internal predecessors, (547), 62 states have call successors, (62), 43 states have call predecessors, (62), 50 states have return successors, (78), 59 states have call predecessors, (78), 54 states have call successors, (78) [2021-10-28 08:45:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 687 transitions. [2021-10-28 08:45:19,632 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 687 transitions. Word has length 55 [2021-10-28 08:45:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:19,632 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 687 transitions. [2021-10-28 08:45:19,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 08:45:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 687 transitions. [2021-10-28 08:45:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 08:45:19,634 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:19,634 INFO L513 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] [2021-10-28 08:45:19,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 08:45:19,635 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2114913751, now seen corresponding path program 1 times [2021-10-28 08:45:19,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:19,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195722438] [2021-10-28 08:45:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:19,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:19,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:45:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:19,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:19,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195722438] [2021-10-28 08:45:19,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195722438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:19,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:19,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:19,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822351421] [2021-10-28 08:45:19,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:19,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:19,974 INFO L87 Difference]: Start difference. First operand 542 states and 687 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 08:45:22,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:22,012 INFO L93 Difference]: Finished difference Result 714 states and 903 transitions. [2021-10-28 08:45:22,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 08:45:22,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2021-10-28 08:45:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:22,018 INFO L225 Difference]: With dead ends: 714 [2021-10-28 08:45:22,018 INFO L226 Difference]: Without dead ends: 714 [2021-10-28 08:45:22,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2021-10-28 08:45:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-10-28 08:45:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 571. [2021-10-28 08:45:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 452 states have (on average 1.2676991150442478) internal successors, (573), 464 states have internal predecessors, (573), 64 states have call successors, (64), 44 states have call predecessors, (64), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2021-10-28 08:45:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 720 transitions. [2021-10-28 08:45:22,040 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 720 transitions. Word has length 52 [2021-10-28 08:45:22,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:22,041 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 720 transitions. [2021-10-28 08:45:22,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 08:45:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 720 transitions. [2021-10-28 08:45:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-28 08:45:22,044 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:22,044 INFO L513 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] [2021-10-28 08:45:22,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 08:45:22,045 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:22,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash -632991762, now seen corresponding path program 1 times [2021-10-28 08:45:22,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:22,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811153058] [2021-10-28 08:45:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:22,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:22,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:22,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:45:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:22,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:22,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811153058] [2021-10-28 08:45:22,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811153058] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:22,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:22,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:45:22,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182709631] [2021-10-28 08:45:22,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:45:22,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:22,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:45:22,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:22,269 INFO L87 Difference]: Start difference. First operand 571 states and 720 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:23,272 INFO L93 Difference]: Finished difference Result 638 states and 811 transitions. [2021-10-28 08:45:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:45:23,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2021-10-28 08:45:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:23,277 INFO L225 Difference]: With dead ends: 638 [2021-10-28 08:45:23,277 INFO L226 Difference]: Without dead ends: 638 [2021-10-28 08:45:23,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:45:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-28 08:45:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 583. [2021-10-28 08:45:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 464 states have (on average 1.271551724137931) internal successors, (590), 476 states have internal predecessors, (590), 64 states have call successors, (64), 44 states have call predecessors, (64), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2021-10-28 08:45:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 737 transitions. [2021-10-28 08:45:23,300 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 737 transitions. Word has length 54 [2021-10-28 08:45:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:23,300 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 737 transitions. [2021-10-28 08:45:23,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 737 transitions. [2021-10-28 08:45:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-28 08:45:23,302 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:23,302 INFO L513 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] [2021-10-28 08:45:23,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 08:45:23,303 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2073627632, now seen corresponding path program 1 times [2021-10-28 08:45:23,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:23,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219766899] [2021-10-28 08:45:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:23,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:45:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:23,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:23,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219766899] [2021-10-28 08:45:23,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219766899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:23,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:23,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:23,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769505931] [2021-10-28 08:45:23,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:23,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:23,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:23,608 INFO L87 Difference]: Start difference. First operand 583 states and 737 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 08:45:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:25,484 INFO L93 Difference]: Finished difference Result 611 states and 769 transitions. [2021-10-28 08:45:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 08:45:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2021-10-28 08:45:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:25,488 INFO L225 Difference]: With dead ends: 611 [2021-10-28 08:45:25,488 INFO L226 Difference]: Without dead ends: 611 [2021-10-28 08:45:25,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-28 08:45:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-10-28 08:45:25,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 564. [2021-10-28 08:45:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 447 states have (on average 1.2662192393736018) internal successors, (566), 459 states have internal predecessors, (566), 64 states have call successors, (64), 44 states have call predecessors, (64), 52 states have return successors, (81), 61 states have call predecessors, (81), 56 states have call successors, (81) [2021-10-28 08:45:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 711 transitions. [2021-10-28 08:45:25,508 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 711 transitions. Word has length 54 [2021-10-28 08:45:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:25,508 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 711 transitions. [2021-10-28 08:45:25,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 08:45:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 711 transitions. [2021-10-28 08:45:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-28 08:45:25,514 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:25,514 INFO L513 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] [2021-10-28 08:45:25,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 08:45:25,515 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2078060306, now seen corresponding path program 1 times [2021-10-28 08:45:25,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:25,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080049000] [2021-10-28 08:45:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:25,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:25,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:45:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:25,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:25,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080049000] [2021-10-28 08:45:25,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080049000] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:25,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:25,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:45:25,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600538917] [2021-10-28 08:45:25,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:45:25,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:45:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:25,787 INFO L87 Difference]: Start difference. First operand 564 states and 711 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:27,060 INFO L93 Difference]: Finished difference Result 666 states and 840 transitions. [2021-10-28 08:45:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:45:27,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2021-10-28 08:45:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:27,065 INFO L225 Difference]: With dead ends: 666 [2021-10-28 08:45:27,065 INFO L226 Difference]: Without dead ends: 666 [2021-10-28 08:45:27,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:45:27,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-10-28 08:45:27,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 580. [2021-10-28 08:45:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 461 states have (on average 1.2668112798264641) internal successors, (584), 473 states have internal predecessors, (584), 64 states have call successors, (64), 45 states have call predecessors, (64), 54 states have return successors, (85), 62 states have call predecessors, (85), 57 states have call successors, (85) [2021-10-28 08:45:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 733 transitions. [2021-10-28 08:45:27,084 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 733 transitions. Word has length 54 [2021-10-28 08:45:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:27,085 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 733 transitions. [2021-10-28 08:45:27,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 733 transitions. [2021-10-28 08:45:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 08:45:27,087 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:27,087 INFO L513 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] [2021-10-28 08:45:27,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 08:45:27,087 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2007283295, now seen corresponding path program 1 times [2021-10-28 08:45:27,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:27,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011639688] [2021-10-28 08:45:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:27,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:27,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-28 08:45:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:27,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:27,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011639688] [2021-10-28 08:45:27,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011639688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:27,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:27,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 08:45:27,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668895075] [2021-10-28 08:45:27,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:45:27,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:45:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:27,403 INFO L87 Difference]: Start difference. First operand 580 states and 733 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 08:45:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:28,671 INFO L93 Difference]: Finished difference Result 544 states and 676 transitions. [2021-10-28 08:45:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:45:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2021-10-28 08:45:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:28,674 INFO L225 Difference]: With dead ends: 544 [2021-10-28 08:45:28,674 INFO L226 Difference]: Without dead ends: 544 [2021-10-28 08:45:28,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-28 08:45:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 506. [2021-10-28 08:45:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 398 states have (on average 1.2487437185929648) internal successors, (497), 406 states have internal predecessors, (497), 60 states have call successors, (60), 43 states have call predecessors, (60), 47 states have return successors, (70), 57 states have call predecessors, (70), 54 states have call successors, (70) [2021-10-28 08:45:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 627 transitions. [2021-10-28 08:45:28,690 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 627 transitions. Word has length 61 [2021-10-28 08:45:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:28,691 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 627 transitions. [2021-10-28 08:45:28,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 08:45:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 627 transitions. [2021-10-28 08:45:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 08:45:28,693 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:28,693 INFO L513 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] [2021-10-28 08:45:28,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 08:45:28,693 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 456516591, now seen corresponding path program 1 times [2021-10-28 08:45:28,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:28,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901221810] [2021-10-28 08:45:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:28,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:28,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:28,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:45:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:28,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:28,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901221810] [2021-10-28 08:45:28,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901221810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:28,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:28,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 08:45:28,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439283720] [2021-10-28 08:45:28,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 08:45:28,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 08:45:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:45:28,975 INFO L87 Difference]: Start difference. First operand 506 states and 627 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:29,989 INFO L93 Difference]: Finished difference Result 568 states and 708 transitions. [2021-10-28 08:45:29,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2021-10-28 08:45:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:29,993 INFO L225 Difference]: With dead ends: 568 [2021-10-28 08:45:29,993 INFO L226 Difference]: Without dead ends: 567 [2021-10-28 08:45:29,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:29,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-10-28 08:45:30,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 523. [2021-10-28 08:45:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 413 states have (on average 1.2397094430992737) internal successors, (512), 421 states have internal predecessors, (512), 60 states have call successors, (60), 43 states have call predecessors, (60), 49 states have return successors, (77), 59 states have call predecessors, (77), 54 states have call successors, (77) [2021-10-28 08:45:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 649 transitions. [2021-10-28 08:45:30,010 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 649 transitions. Word has length 55 [2021-10-28 08:45:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:30,010 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 649 transitions. [2021-10-28 08:45:30,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:30,010 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 649 transitions. [2021-10-28 08:45:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 08:45:30,012 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:30,012 INFO L513 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] [2021-10-28 08:45:30,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 08:45:30,013 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:30,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash 456793421, now seen corresponding path program 1 times [2021-10-28 08:45:30,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:30,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504814950] [2021-10-28 08:45:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:30,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:30,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:30,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:45:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:30,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:30,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504814950] [2021-10-28 08:45:30,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504814950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:30,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:30,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 08:45:30,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452851509] [2021-10-28 08:45:30,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 08:45:30,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:30,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 08:45:30,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:45:30,281 INFO L87 Difference]: Start difference. First operand 523 states and 649 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:31,351 INFO L93 Difference]: Finished difference Result 563 states and 696 transitions. [2021-10-28 08:45:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:45:31,353 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2021-10-28 08:45:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:31,357 INFO L225 Difference]: With dead ends: 563 [2021-10-28 08:45:31,357 INFO L226 Difference]: Without dead ends: 551 [2021-10-28 08:45:31,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:45:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-10-28 08:45:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 520. [2021-10-28 08:45:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 410 states have (on average 1.2414634146341463) internal successors, (509), 419 states have internal predecessors, (509), 60 states have call successors, (60), 43 states have call predecessors, (60), 49 states have return successors, (76), 58 states have call predecessors, (76), 54 states have call successors, (76) [2021-10-28 08:45:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 645 transitions. [2021-10-28 08:45:31,374 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 645 transitions. Word has length 55 [2021-10-28 08:45:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:31,374 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 645 transitions. [2021-10-28 08:45:31,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 645 transitions. [2021-10-28 08:45:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-28 08:45:31,376 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:31,376 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:31,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 08:45:31,377 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:31,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:31,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1713148089, now seen corresponding path program 1 times [2021-10-28 08:45:31,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:31,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897564143] [2021-10-28 08:45:31,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:31,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:31,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:45:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 08:45:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:31,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:31,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897564143] [2021-10-28 08:45:31,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897564143] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:31,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:31,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:31,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326906029] [2021-10-28 08:45:31,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:31,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:31,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:31,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:31,628 INFO L87 Difference]: Start difference. First operand 520 states and 645 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 08:45:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:33,033 INFO L93 Difference]: Finished difference Result 563 states and 695 transitions. [2021-10-28 08:45:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:45:33,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2021-10-28 08:45:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:33,036 INFO L225 Difference]: With dead ends: 563 [2021-10-28 08:45:33,036 INFO L226 Difference]: Without dead ends: 523 [2021-10-28 08:45:33,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-10-28 08:45:33,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 496. [2021-10-28 08:45:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 392 states have (on average 1.2372448979591837) internal successors, (485), 400 states have internal predecessors, (485), 58 states have call successors, (58), 41 states have call predecessors, (58), 45 states have return successors, (72), 55 states have call predecessors, (72), 52 states have call successors, (72) [2021-10-28 08:45:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 615 transitions. [2021-10-28 08:45:33,051 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 615 transitions. Word has length 57 [2021-10-28 08:45:33,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:33,052 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 615 transitions. [2021-10-28 08:45:33,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 08:45:33,052 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 615 transitions. [2021-10-28 08:45:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-28 08:45:33,054 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:33,054 INFO L513 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] [2021-10-28 08:45:33,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 08:45:33,055 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:33,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash 471512753, now seen corresponding path program 1 times [2021-10-28 08:45:33,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:33,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660678402] [2021-10-28 08:45:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:33,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:33,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:33,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:33,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:45:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:33,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:33,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660678402] [2021-10-28 08:45:33,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660678402] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:33,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:33,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 08:45:33,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424716736] [2021-10-28 08:45:33,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:45:33,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:45:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:33,295 INFO L87 Difference]: Start difference. First operand 496 states and 615 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:45:34,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:34,422 INFO L93 Difference]: Finished difference Result 527 states and 650 transitions. [2021-10-28 08:45:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:34,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2021-10-28 08:45:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:34,424 INFO L225 Difference]: With dead ends: 527 [2021-10-28 08:45:34,425 INFO L226 Difference]: Without dead ends: 513 [2021-10-28 08:45:34,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-10-28 08:45:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-10-28 08:45:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 478. [2021-10-28 08:45:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 377 states have (on average 1.2413793103448276) internal successors, (468), 384 states have internal predecessors, (468), 57 states have call successors, (57), 41 states have call predecessors, (57), 43 states have return successors, (65), 53 states have call predecessors, (65), 51 states have call successors, (65) [2021-10-28 08:45:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 590 transitions. [2021-10-28 08:45:34,438 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 590 transitions. Word has length 56 [2021-10-28 08:45:34,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:34,439 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 590 transitions. [2021-10-28 08:45:34,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:45:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 590 transitions. [2021-10-28 08:45:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 08:45:34,440 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:34,441 INFO L513 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] [2021-10-28 08:45:34,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 08:45:34,441 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:34,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:34,441 INFO L85 PathProgramCache]: Analyzing trace with hash -70909626, now seen corresponding path program 1 times [2021-10-28 08:45:34,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:34,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465741508] [2021-10-28 08:45:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:34,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-28 08:45:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:34,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:34,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465741508] [2021-10-28 08:45:34,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465741508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:34,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:34,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:34,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432614533] [2021-10-28 08:45:34,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:34,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:34,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:34,699 INFO L87 Difference]: Start difference. First operand 478 states and 590 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 08:45:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:36,203 INFO L93 Difference]: Finished difference Result 511 states and 631 transitions. [2021-10-28 08:45:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:45:36,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-10-28 08:45:36,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:36,205 INFO L225 Difference]: With dead ends: 511 [2021-10-28 08:45:36,205 INFO L226 Difference]: Without dead ends: 511 [2021-10-28 08:45:36,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-28 08:45:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-10-28 08:45:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 478. [2021-10-28 08:45:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 377 states have (on average 1.2360742705570291) internal successors, (466), 384 states have internal predecessors, (466), 57 states have call successors, (57), 41 states have call predecessors, (57), 43 states have return successors, (65), 53 states have call predecessors, (65), 51 states have call successors, (65) [2021-10-28 08:45:36,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2021-10-28 08:45:36,219 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 65 [2021-10-28 08:45:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:36,219 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2021-10-28 08:45:36,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 08:45:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2021-10-28 08:45:36,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-28 08:45:36,221 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:36,221 INFO L513 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] [2021-10-28 08:45:36,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 08:45:36,222 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:36,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:36,222 INFO L85 PathProgramCache]: Analyzing trace with hash -876554703, now seen corresponding path program 1 times [2021-10-28 08:45:36,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:36,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700842172] [2021-10-28 08:45:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:36,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:36,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:36,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:36,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700842172] [2021-10-28 08:45:36,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700842172] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:36,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:36,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:45:36,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087765214] [2021-10-28 08:45:36,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:45:36,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:45:36,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:45:36,481 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:37,746 INFO L93 Difference]: Finished difference Result 519 states and 636 transitions. [2021-10-28 08:45:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:37,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2021-10-28 08:45:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:37,750 INFO L225 Difference]: With dead ends: 519 [2021-10-28 08:45:37,750 INFO L226 Difference]: Without dead ends: 501 [2021-10-28 08:45:37,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-10-28 08:45:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 474. [2021-10-28 08:45:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 374 states have (on average 1.2352941176470589) internal successors, (462), 381 states have internal predecessors, (462), 56 states have call successors, (56), 41 states have call predecessors, (56), 43 states have return successors, (64), 52 states have call predecessors, (64), 50 states have call successors, (64) [2021-10-28 08:45:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 582 transitions. [2021-10-28 08:45:37,770 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 582 transitions. Word has length 60 [2021-10-28 08:45:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:37,770 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 582 transitions. [2021-10-28 08:45:37,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 582 transitions. [2021-10-28 08:45:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-28 08:45:37,773 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:37,773 INFO L513 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] [2021-10-28 08:45:37,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 08:45:37,773 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:37,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:37,774 INFO L85 PathProgramCache]: Analyzing trace with hash -863080833, now seen corresponding path program 1 times [2021-10-28 08:45:37,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:37,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40267609] [2021-10-28 08:45:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:37,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:37,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:37,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-28 08:45:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:38,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:38,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40267609] [2021-10-28 08:45:38,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40267609] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:38,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:38,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:38,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885705936] [2021-10-28 08:45:38,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:38,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:38,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:38,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:38,057 INFO L87 Difference]: Start difference. First operand 474 states and 582 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 08:45:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:39,193 INFO L93 Difference]: Finished difference Result 526 states and 647 transitions. [2021-10-28 08:45:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 08:45:39,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2021-10-28 08:45:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:39,197 INFO L225 Difference]: With dead ends: 526 [2021-10-28 08:45:39,197 INFO L226 Difference]: Without dead ends: 526 [2021-10-28 08:45:39,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-10-28 08:45:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 474. [2021-10-28 08:45:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 374 states have (on average 1.2299465240641712) internal successors, (460), 381 states have internal predecessors, (460), 56 states have call successors, (56), 41 states have call predecessors, (56), 43 states have return successors, (64), 52 states have call predecessors, (64), 50 states have call successors, (64) [2021-10-28 08:45:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 580 transitions. [2021-10-28 08:45:39,229 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 580 transitions. Word has length 68 [2021-10-28 08:45:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:39,230 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 580 transitions. [2021-10-28 08:45:39,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 08:45:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 580 transitions. [2021-10-28 08:45:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 08:45:39,233 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:39,233 INFO L513 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] [2021-10-28 08:45:39,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 08:45:39,233 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:39,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1815591607, now seen corresponding path program 1 times [2021-10-28 08:45:39,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:39,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348320596] [2021-10-28 08:45:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:39,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:39,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:39,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:39,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:39,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348320596] [2021-10-28 08:45:39,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348320596] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:39,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:39,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:45:39,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987585601] [2021-10-28 08:45:39,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:45:39,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:45:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:45:39,551 INFO L87 Difference]: Start difference. First operand 474 states and 580 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:40,715 INFO L93 Difference]: Finished difference Result 515 states and 628 transitions. [2021-10-28 08:45:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2021-10-28 08:45:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:40,718 INFO L225 Difference]: With dead ends: 515 [2021-10-28 08:45:40,718 INFO L226 Difference]: Without dead ends: 496 [2021-10-28 08:45:40,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:40,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-28 08:45:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 469. [2021-10-28 08:45:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 370 states have (on average 1.2297297297297298) internal successors, (455), 377 states have internal predecessors, (455), 55 states have call successors, (55), 41 states have call predecessors, (55), 43 states have return successors, (63), 51 states have call predecessors, (63), 49 states have call successors, (63) [2021-10-28 08:45:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 573 transitions. [2021-10-28 08:45:40,732 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 573 transitions. Word has length 61 [2021-10-28 08:45:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:40,732 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 573 transitions. [2021-10-28 08:45:40,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 573 transitions. [2021-10-28 08:45:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 08:45:40,734 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:40,734 INFO L513 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] [2021-10-28 08:45:40,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 08:45:40,735 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1549264219, now seen corresponding path program 1 times [2021-10-28 08:45:40,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:40,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019551182] [2021-10-28 08:45:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:40,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:40,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:41,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:41,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019551182] [2021-10-28 08:45:41,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019551182] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:41,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:41,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:45:41,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758064499] [2021-10-28 08:45:41,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:45:41,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:45:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:45:41,027 INFO L87 Difference]: Start difference. First operand 469 states and 573 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:42,023 INFO L93 Difference]: Finished difference Result 510 states and 621 transitions. [2021-10-28 08:45:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:42,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2021-10-28 08:45:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:42,026 INFO L225 Difference]: With dead ends: 510 [2021-10-28 08:45:42,026 INFO L226 Difference]: Without dead ends: 492 [2021-10-28 08:45:42,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-10-28 08:45:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 465. [2021-10-28 08:45:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 367 states have (on average 1.228882833787466) internal successors, (451), 374 states have internal predecessors, (451), 54 states have call successors, (54), 41 states have call predecessors, (54), 43 states have return successors, (62), 50 states have call predecessors, (62), 48 states have call successors, (62) [2021-10-28 08:45:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 567 transitions. [2021-10-28 08:45:42,040 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 567 transitions. Word has length 61 [2021-10-28 08:45:42,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:42,040 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 567 transitions. [2021-10-28 08:45:42,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 567 transitions. [2021-10-28 08:45:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-28 08:45:42,042 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:42,042 INFO L513 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] [2021-10-28 08:45:42,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 08:45:42,042 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1654833550, now seen corresponding path program 1 times [2021-10-28 08:45:42,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:42,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066688814] [2021-10-28 08:45:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:42,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:42,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-10-28 08:45:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:42,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:42,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:42,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066688814] [2021-10-28 08:45:42,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066688814] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:42,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:42,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 08:45:42,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022637649] [2021-10-28 08:45:42,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:45:42,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:45:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:45:42,302 INFO L87 Difference]: Start difference. First operand 465 states and 567 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 08:45:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:43,226 INFO L93 Difference]: Finished difference Result 636 states and 773 transitions. [2021-10-28 08:45:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:45:43,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2021-10-28 08:45:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:43,229 INFO L225 Difference]: With dead ends: 636 [2021-10-28 08:45:43,229 INFO L226 Difference]: Without dead ends: 636 [2021-10-28 08:45:43,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:45:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-10-28 08:45:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 586. [2021-10-28 08:45:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 460 states have (on average 1.2195652173913043) internal successors, (561), 469 states have internal predecessors, (561), 67 states have call successors, (67), 51 states have call predecessors, (67), 58 states have return successors, (87), 66 states have call predecessors, (87), 62 states have call successors, (87) [2021-10-28 08:45:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 715 transitions. [2021-10-28 08:45:43,245 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 715 transitions. Word has length 67 [2021-10-28 08:45:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:43,246 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 715 transitions. [2021-10-28 08:45:43,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 08:45:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 715 transitions. [2021-10-28 08:45:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 08:45:43,248 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:43,248 INFO L513 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] [2021-10-28 08:45:43,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 08:45:43,248 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:43,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2014934282, now seen corresponding path program 1 times [2021-10-28 08:45:43,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:43,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739887857] [2021-10-28 08:45:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:43,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:43,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 08:45:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:43,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:43,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739887857] [2021-10-28 08:45:43,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739887857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:43,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:43,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:45:43,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692964188] [2021-10-28 08:45:43,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:45:43,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:45:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:45:43,513 INFO L87 Difference]: Start difference. First operand 586 states and 715 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:44,885 INFO L93 Difference]: Finished difference Result 627 states and 764 transitions. [2021-10-28 08:45:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:44,885 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2021-10-28 08:45:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:44,887 INFO L225 Difference]: With dead ends: 627 [2021-10-28 08:45:44,888 INFO L226 Difference]: Without dead ends: 587 [2021-10-28 08:45:44,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-10-28 08:45:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 560. [2021-10-28 08:45:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 439 states have (on average 1.2186788154897494) internal successors, (535), 448 states have internal predecessors, (535), 64 states have call successors, (64), 49 states have call predecessors, (64), 56 states have return successors, (84), 63 states have call predecessors, (84), 59 states have call successors, (84) [2021-10-28 08:45:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 683 transitions. [2021-10-28 08:45:44,902 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 683 transitions. Word has length 65 [2021-10-28 08:45:44,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:44,902 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 683 transitions. [2021-10-28 08:45:44,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 08:45:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 683 transitions. [2021-10-28 08:45:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-28 08:45:44,904 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:44,904 INFO L513 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] [2021-10-28 08:45:44,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 08:45:44,905 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1554016619, now seen corresponding path program 1 times [2021-10-28 08:45:44,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:44,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83252529] [2021-10-28 08:45:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:44,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-28 08:45:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-10-28 08:45:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:45,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:45,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83252529] [2021-10-28 08:45:45,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83252529] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:45,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:45,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:45,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872256956] [2021-10-28 08:45:45,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:45,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:45,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:45,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:45,191 INFO L87 Difference]: Start difference. First operand 560 states and 683 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-28 08:45:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:46,662 INFO L93 Difference]: Finished difference Result 575 states and 695 transitions. [2021-10-28 08:45:46,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 08:45:46,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2021-10-28 08:45:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:46,665 INFO L225 Difference]: With dead ends: 575 [2021-10-28 08:45:46,665 INFO L226 Difference]: Without dead ends: 575 [2021-10-28 08:45:46,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2021-10-28 08:45:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-10-28 08:45:46,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 542. [2021-10-28 08:45:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 425 states have (on average 1.2188235294117646) internal successors, (518), 433 states have internal predecessors, (518), 62 states have call successors, (62), 49 states have call predecessors, (62), 54 states have return successors, (73), 60 states have call predecessors, (73), 57 states have call successors, (73) [2021-10-28 08:45:46,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 653 transitions. [2021-10-28 08:45:46,679 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 653 transitions. Word has length 79 [2021-10-28 08:45:46,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:46,679 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 653 transitions. [2021-10-28 08:45:46,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-28 08:45:46,680 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 653 transitions. [2021-10-28 08:45:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-28 08:45:46,681 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:46,681 INFO L513 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] [2021-10-28 08:45:46,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 08:45:46,682 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash -478221177, now seen corresponding path program 1 times [2021-10-28 08:45:46,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:46,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897803884] [2021-10-28 08:45:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:46,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-10-28 08:45:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-10-28 08:45:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:46,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:46,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897803884] [2021-10-28 08:45:46,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897803884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:46,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:46,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:45:46,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786954784] [2021-10-28 08:45:46,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:45:46,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:45:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:45:46,986 INFO L87 Difference]: Start difference. First operand 542 states and 653 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-28 08:45:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:47,973 INFO L93 Difference]: Finished difference Result 651 states and 821 transitions. [2021-10-28 08:45:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 08:45:47,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2021-10-28 08:45:47,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:47,986 INFO L225 Difference]: With dead ends: 651 [2021-10-28 08:45:47,986 INFO L226 Difference]: Without dead ends: 651 [2021-10-28 08:45:47,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-10-28 08:45:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-10-28 08:45:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 506. [2021-10-28 08:45:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 401 states have (on average 1.2194513715710724) internal successors, (489), 407 states have internal predecessors, (489), 55 states have call successors, (55), 43 states have call predecessors, (55), 49 states have return successors, (63), 56 states have call predecessors, (63), 51 states have call successors, (63) [2021-10-28 08:45:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 607 transitions. [2021-10-28 08:45:48,002 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 607 transitions. Word has length 80 [2021-10-28 08:45:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:48,002 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 607 transitions. [2021-10-28 08:45:48,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-28 08:45:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 607 transitions. [2021-10-28 08:45:48,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-28 08:45:48,004 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:48,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:48,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 08:45:48,005 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:48,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash -998039197, now seen corresponding path program 1 times [2021-10-28 08:45:48,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:48,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051399254] [2021-10-28 08:45:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:48,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 08:45:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:48,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:48,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051399254] [2021-10-28 08:45:48,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051399254] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:48,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:48,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-10-28 08:45:48,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383813163] [2021-10-28 08:45:48,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 08:45:48,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 08:45:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:48,369 INFO L87 Difference]: Start difference. First operand 506 states and 607 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-28 08:45:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:49,488 INFO L93 Difference]: Finished difference Result 581 states and 696 transitions. [2021-10-28 08:45:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 08:45:49,489 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2021-10-28 08:45:49,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:49,492 INFO L225 Difference]: With dead ends: 581 [2021-10-28 08:45:49,492 INFO L226 Difference]: Without dead ends: 563 [2021-10-28 08:45:49,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2021-10-28 08:45:49,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-28 08:45:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 514. [2021-10-28 08:45:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 408 states have (on average 1.2156862745098038) internal successors, (496), 414 states have internal predecessors, (496), 55 states have call successors, (55), 43 states have call predecessors, (55), 50 states have return successors, (66), 57 states have call predecessors, (66), 51 states have call successors, (66) [2021-10-28 08:45:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 617 transitions. [2021-10-28 08:45:49,504 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 617 transitions. Word has length 85 [2021-10-28 08:45:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:49,505 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 617 transitions. [2021-10-28 08:45:49,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-28 08:45:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 617 transitions. [2021-10-28 08:45:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-28 08:45:49,507 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:49,507 INFO L513 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] [2021-10-28 08:45:49,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 08:45:49,507 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2056891224, now seen corresponding path program 1 times [2021-10-28 08:45:49,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:49,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944810062] [2021-10-28 08:45:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:49,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:45:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-28 08:45:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:49,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:49,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944810062] [2021-10-28 08:45:49,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944810062] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:49,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:49,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 08:45:49,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713684703] [2021-10-28 08:45:49,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:45:49,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:49,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:45:49,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:49,807 INFO L87 Difference]: Start difference. First operand 514 states and 617 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-28 08:45:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:51,134 INFO L93 Difference]: Finished difference Result 667 states and 781 transitions. [2021-10-28 08:45:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 08:45:51,135 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2021-10-28 08:45:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:51,137 INFO L225 Difference]: With dead ends: 667 [2021-10-28 08:45:51,138 INFO L226 Difference]: Without dead ends: 667 [2021-10-28 08:45:51,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-28 08:45:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-10-28 08:45:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 635. [2021-10-28 08:45:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 505 states have (on average 1.205940594059406) internal successors, (609), 513 states have internal predecessors, (609), 63 states have call successors, (63), 55 states have call predecessors, (63), 66 states have return successors, (77), 67 states have call predecessors, (77), 59 states have call successors, (77) [2021-10-28 08:45:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 749 transitions. [2021-10-28 08:45:51,156 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 749 transitions. Word has length 80 [2021-10-28 08:45:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:51,157 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 749 transitions. [2021-10-28 08:45:51,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 5 states have internal predecessors, (64), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-28 08:45:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 749 transitions. [2021-10-28 08:45:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 08:45:51,159 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:51,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:51,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-28 08:45:51,160 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1814178751, now seen corresponding path program 1 times [2021-10-28 08:45:51,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:51,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953773785] [2021-10-28 08:45:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:51,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-10-28 08:45:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:51,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:51,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953773785] [2021-10-28 08:45:51,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953773785] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:51,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:51,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-10-28 08:45:51,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193954864] [2021-10-28 08:45:51,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 08:45:51,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:51,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 08:45:51,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:51,505 INFO L87 Difference]: Start difference. First operand 635 states and 749 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-28 08:45:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:52,792 INFO L93 Difference]: Finished difference Result 682 states and 798 transitions. [2021-10-28 08:45:52,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 08:45:52,795 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2021-10-28 08:45:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:52,798 INFO L225 Difference]: With dead ends: 682 [2021-10-28 08:45:52,798 INFO L226 Difference]: Without dead ends: 664 [2021-10-28 08:45:52,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-10-28 08:45:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-28 08:45:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 627. [2021-10-28 08:45:52,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 498 states have (on average 1.2068273092369477) internal successors, (601), 506 states have internal predecessors, (601), 63 states have call successors, (63), 55 states have call predecessors, (63), 65 states have return successors, (75), 66 states have call predecessors, (75), 59 states have call successors, (75) [2021-10-28 08:45:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 739 transitions. [2021-10-28 08:45:52,814 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 739 transitions. Word has length 86 [2021-10-28 08:45:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:52,815 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 739 transitions. [2021-10-28 08:45:52,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-28 08:45:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 739 transitions. [2021-10-28 08:45:52,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-28 08:45:52,817 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:52,817 INFO L513 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] [2021-10-28 08:45:52,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-28 08:45:52,818 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:52,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1760569352, now seen corresponding path program 1 times [2021-10-28 08:45:52,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:52,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924955201] [2021-10-28 08:45:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:52,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:53,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:45:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:53,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-10-28 08:45:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:53,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:53,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924955201] [2021-10-28 08:45:53,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924955201] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:53,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:53,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 08:45:53,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252523957] [2021-10-28 08:45:53,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:45:53,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:53,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:45:53,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:53,077 INFO L87 Difference]: Start difference. First operand 627 states and 739 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 08:45:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:53,842 INFO L93 Difference]: Finished difference Result 634 states and 743 transitions. [2021-10-28 08:45:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2021-10-28 08:45:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:53,844 INFO L225 Difference]: With dead ends: 634 [2021-10-28 08:45:53,844 INFO L226 Difference]: Without dead ends: 581 [2021-10-28 08:45:53,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-10-28 08:45:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2021-10-28 08:45:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 456 states have (on average 1.206140350877193) internal successors, (550), 464 states have internal predecessors, (550), 61 states have call successors, (61), 53 states have call predecessors, (61), 61 states have return successors, (71), 62 states have call predecessors, (71), 57 states have call successors, (71) [2021-10-28 08:45:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 682 transitions. [2021-10-28 08:45:53,861 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 682 transitions. Word has length 81 [2021-10-28 08:45:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:53,861 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 682 transitions. [2021-10-28 08:45:53,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 08:45:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 682 transitions. [2021-10-28 08:45:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-28 08:45:53,863 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:53,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:53,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-28 08:45:53,864 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1681688182, now seen corresponding path program 1 times [2021-10-28 08:45:53,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:53,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80127022] [2021-10-28 08:45:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:53,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:54,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:45:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:45:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-10-28 08:45:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:54,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-10-28 08:45:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:54,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:54,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80127022] [2021-10-28 08:45:54,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80127022] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:54,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:54,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-10-28 08:45:54,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050481088] [2021-10-28 08:45:54,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 08:45:54,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 08:45:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:54,222 INFO L87 Difference]: Start difference. First operand 579 states and 682 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-10-28 08:45:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:55,441 INFO L93 Difference]: Finished difference Result 580 states and 682 transitions. [2021-10-28 08:45:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 08:45:55,441 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 90 [2021-10-28 08:45:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:55,446 INFO L225 Difference]: With dead ends: 580 [2021-10-28 08:45:55,447 INFO L226 Difference]: Without dead ends: 495 [2021-10-28 08:45:55,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-10-28 08:45:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-10-28 08:45:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2021-10-28 08:45:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 384 states have (on average 1.2083333333333333) internal successors, (464), 391 states have internal predecessors, (464), 54 states have call successors, (54), 47 states have call predecessors, (54), 54 states have return successors, (64), 55 states have call predecessors, (64), 51 states have call successors, (64) [2021-10-28 08:45:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 582 transitions. [2021-10-28 08:45:55,460 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 582 transitions. Word has length 90 [2021-10-28 08:45:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:55,460 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 582 transitions. [2021-10-28 08:45:55,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-10-28 08:45:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 582 transitions. [2021-10-28 08:45:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-28 08:45:55,462 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:55,463 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:55,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-28 08:45:55,463 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1266916623, now seen corresponding path program 1 times [2021-10-28 08:45:55,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:55,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093900278] [2021-10-28 08:45:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:55,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-10-28 08:45:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-10-28 08:45:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:55,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:55,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093900278] [2021-10-28 08:45:55,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093900278] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:55,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:55,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:45:55,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052521485] [2021-10-28 08:45:55,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:45:55,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:45:55,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:45:55,785 INFO L87 Difference]: Start difference. First operand 493 states and 582 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-10-28 08:45:56,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:56,272 INFO L93 Difference]: Finished difference Result 491 states and 577 transitions. [2021-10-28 08:45:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:45:56,273 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2021-10-28 08:45:56,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:56,275 INFO L225 Difference]: With dead ends: 491 [2021-10-28 08:45:56,275 INFO L226 Difference]: Without dead ends: 489 [2021-10-28 08:45:56,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:45:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-10-28 08:45:56,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 436. [2021-10-28 08:45:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 340 states have (on average 1.1970588235294117) internal successors, (407), 346 states have internal predecessors, (407), 47 states have call successors, (47), 42 states have call predecessors, (47), 48 states have return successors, (55), 48 states have call predecessors, (55), 44 states have call successors, (55) [2021-10-28 08:45:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 509 transitions. [2021-10-28 08:45:56,286 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 509 transitions. Word has length 96 [2021-10-28 08:45:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:56,287 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 509 transitions. [2021-10-28 08:45:56,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-10-28 08:45:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 509 transitions. [2021-10-28 08:45:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-28 08:45:56,289 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:56,289 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:56,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 08:45:56,290 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:56,290 INFO L85 PathProgramCache]: Analyzing trace with hash -596239754, now seen corresponding path program 1 times [2021-10-28 08:45:56,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:56,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297941268] [2021-10-28 08:45:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:56,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 08:45:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-10-28 08:45:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:56,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:56,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297941268] [2021-10-28 08:45:56,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297941268] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:56,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:56,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 08:45:56,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448210713] [2021-10-28 08:45:56,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 08:45:56,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:56,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 08:45:56,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:45:56,619 INFO L87 Difference]: Start difference. First operand 436 states and 509 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-28 08:45:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:58,034 INFO L93 Difference]: Finished difference Result 833 states and 977 transitions. [2021-10-28 08:45:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 08:45:58,034 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2021-10-28 08:45:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:58,037 INFO L225 Difference]: With dead ends: 833 [2021-10-28 08:45:58,037 INFO L226 Difference]: Without dead ends: 791 [2021-10-28 08:45:58,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2021-10-28 08:45:58,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-10-28 08:45:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 416. [2021-10-28 08:45:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 324 states have (on average 1.1975308641975309) internal successors, (388), 329 states have internal predecessors, (388), 44 states have call successors, (44), 41 states have call predecessors, (44), 47 states have return successors, (52), 45 states have call predecessors, (52), 41 states have call successors, (52) [2021-10-28 08:45:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 484 transitions. [2021-10-28 08:45:58,051 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 484 transitions. Word has length 96 [2021-10-28 08:45:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:58,051 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 484 transitions. [2021-10-28 08:45:58,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-28 08:45:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 484 transitions. [2021-10-28 08:45:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 08:45:58,053 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:58,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:58,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-28 08:45:58,054 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash -693188859, now seen corresponding path program 1 times [2021-10-28 08:45:58,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:58,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828660075] [2021-10-28 08:45:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:58,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:45:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:45:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:45:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:45:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-10-28 08:45:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:58,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:58,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828660075] [2021-10-28 08:45:58,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828660075] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:58,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:58,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-10-28 08:45:58,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956237241] [2021-10-28 08:45:58,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 08:45:58,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:58,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 08:45:58,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:45:58,483 INFO L87 Difference]: Start difference. First operand 416 states and 484 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-10-28 08:45:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:59,124 INFO L93 Difference]: Finished difference Result 461 states and 538 transitions. [2021-10-28 08:45:59,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 08:45:59,124 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2021-10-28 08:45:59,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:59,126 INFO L225 Difference]: With dead ends: 461 [2021-10-28 08:45:59,126 INFO L226 Difference]: Without dead ends: 435 [2021-10-28 08:45:59,127 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-10-28 08:45:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-10-28 08:45:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 425. [2021-10-28 08:45:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 332 states have (on average 1.1837349397590362) internal successors, (393), 338 states have internal predecessors, (393), 45 states have call successors, (45), 41 states have call predecessors, (45), 47 states have return successors, (52), 45 states have call predecessors, (52), 41 states have call successors, (52) [2021-10-28 08:45:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 490 transitions. [2021-10-28 08:45:59,137 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 490 transitions. Word has length 101 [2021-10-28 08:45:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:59,137 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 490 transitions. [2021-10-28 08:45:59,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-10-28 08:45:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 490 transitions. [2021-10-28 08:45:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-28 08:45:59,139 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:59,139 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:59,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-28 08:45:59,140 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:45:59,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1496072861, now seen corresponding path program 1 times [2021-10-28 08:45:59,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:59,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240568508] [2021-10-28 08:45:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:59,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:45:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:45:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-10-28 08:45:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-10-28 08:45:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:45:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:45:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:45:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:45:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-28 08:45:59,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:59,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240568508] [2021-10-28 08:45:59,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240568508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:59,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:59,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:45:59,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104531105] [2021-10-28 08:45:59,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:45:59,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:59,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:45:59,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:45:59,480 INFO L87 Difference]: Start difference. First operand 425 states and 490 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2021-10-28 08:46:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:00,000 INFO L93 Difference]: Finished difference Result 376 states and 423 transitions. [2021-10-28 08:46:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 08:46:00,001 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) Word has length 110 [2021-10-28 08:46:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:00,002 INFO L225 Difference]: With dead ends: 376 [2021-10-28 08:46:00,002 INFO L226 Difference]: Without dead ends: 376 [2021-10-28 08:46:00,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-28 08:46:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-28 08:46:00,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 242. [2021-10-28 08:46:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 189 states have (on average 1.1428571428571428) internal successors, (216), 191 states have internal predecessors, (216), 26 states have call successors, (26), 26 states have call predecessors, (26), 26 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2021-10-28 08:46:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 268 transitions. [2021-10-28 08:46:00,008 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 268 transitions. Word has length 110 [2021-10-28 08:46:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:00,009 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 268 transitions. [2021-10-28 08:46:00,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2021-10-28 08:46:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 268 transitions. [2021-10-28 08:46:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 08:46:00,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:00,010 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:00,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-28 08:46:00,011 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1225581856, now seen corresponding path program 1 times [2021-10-28 08:46:00,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:00,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54858420] [2021-10-28 08:46:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:00,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-10-28 08:46:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 08:46:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:46:00,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:00,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54858420] [2021-10-28 08:46:00,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54858420] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:00,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:00,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 08:46:00,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456344553] [2021-10-28 08:46:00,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 08:46:00,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 08:46:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:46:00,388 INFO L87 Difference]: Start difference. First operand 242 states and 268 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-10-28 08:46:01,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:01,061 INFO L93 Difference]: Finished difference Result 256 states and 284 transitions. [2021-10-28 08:46:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:46:01,062 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2021-10-28 08:46:01,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:01,063 INFO L225 Difference]: With dead ends: 256 [2021-10-28 08:46:01,063 INFO L226 Difference]: Without dead ends: 256 [2021-10-28 08:46:01,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:46:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-28 08:46:01,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 246. [2021-10-28 08:46:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 192 states have (on average 1.140625) internal successors, (219), 194 states have internal predecessors, (219), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (27), 25 states have call predecessors, (27), 24 states have call successors, (27) [2021-10-28 08:46:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 272 transitions. [2021-10-28 08:46:01,068 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 272 transitions. Word has length 117 [2021-10-28 08:46:01,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:01,069 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 272 transitions. [2021-10-28 08:46:01,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-10-28 08:46:01,069 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 272 transitions. [2021-10-28 08:46:01,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 08:46:01,070 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:01,070 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:01,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-28 08:46:01,071 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:01,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1044095359, now seen corresponding path program 1 times [2021-10-28 08:46:01,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:01,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912656936] [2021-10-28 08:46:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:01,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-10-28 08:46:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 08:46:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:46:01,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:01,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912656936] [2021-10-28 08:46:01,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912656936] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:01,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:01,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 08:46:01,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73360969] [2021-10-28 08:46:01,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 08:46:01,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 08:46:01,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:46:01,414 INFO L87 Difference]: Start difference. First operand 246 states and 272 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-10-28 08:46:01,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:01,956 INFO L93 Difference]: Finished difference Result 256 states and 282 transitions. [2021-10-28 08:46:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:46:01,956 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2021-10-28 08:46:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:01,958 INFO L225 Difference]: With dead ends: 256 [2021-10-28 08:46:01,958 INFO L226 Difference]: Without dead ends: 252 [2021-10-28 08:46:01,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:46:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-28 08:46:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 246. [2021-10-28 08:46:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 192 states have (on average 1.1354166666666667) internal successors, (218), 194 states have internal predecessors, (218), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (27), 25 states have call predecessors, (27), 24 states have call successors, (27) [2021-10-28 08:46:01,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 271 transitions. [2021-10-28 08:46:01,963 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 271 transitions. Word has length 117 [2021-10-28 08:46:01,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:01,964 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 271 transitions. [2021-10-28 08:46:01,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-10-28 08:46:01,964 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 271 transitions. [2021-10-28 08:46:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-28 08:46:01,965 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:01,966 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:01,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-28 08:46:01,966 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1109919017, now seen corresponding path program 1 times [2021-10-28 08:46:01,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:01,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653691046] [2021-10-28 08:46:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:01,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:46:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-10-28 08:46:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-10-28 08:46:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 08:46:02,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:02,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653691046] [2021-10-28 08:46:02,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653691046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:02,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:02,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-10-28 08:46:02,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183835259] [2021-10-28 08:46:02,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 08:46:02,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 08:46:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-10-28 08:46:02,634 INFO L87 Difference]: Start difference. First operand 246 states and 271 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 08:46:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:03,686 INFO L93 Difference]: Finished difference Result 315 states and 356 transitions. [2021-10-28 08:46:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-28 08:46:03,687 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2021-10-28 08:46:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:03,688 INFO L225 Difference]: With dead ends: 315 [2021-10-28 08:46:03,689 INFO L226 Difference]: Without dead ends: 283 [2021-10-28 08:46:03,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 08:46:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-28 08:46:03,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 263. [2021-10-28 08:46:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 207 states have (on average 1.144927536231884) internal successors, (237), 209 states have internal predecessors, (237), 26 states have call successors, (26), 26 states have call predecessors, (26), 29 states have return successors, (29), 27 states have call predecessors, (29), 24 states have call successors, (29) [2021-10-28 08:46:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 292 transitions. [2021-10-28 08:46:03,696 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 292 transitions. Word has length 147 [2021-10-28 08:46:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:03,696 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 292 transitions. [2021-10-28 08:46:03,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 11 states have internal predecessors, (98), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 08:46:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 292 transitions. [2021-10-28 08:46:03,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-28 08:46:03,698 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:03,699 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:03,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-28 08:46:03,699 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:03,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2025391703, now seen corresponding path program 1 times [2021-10-28 08:46:03,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:03,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075630140] [2021-10-28 08:46:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:03,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:03,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:46:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-10-28 08:46:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-10-28 08:46:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-28 08:46:04,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:04,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075630140] [2021-10-28 08:46:04,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075630140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:04,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:04,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-10-28 08:46:04,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872817469] [2021-10-28 08:46:04,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-28 08:46:04,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-28 08:46:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-10-28 08:46:04,328 INFO L87 Difference]: Start difference. First operand 263 states and 292 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 08:46:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:05,271 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2021-10-28 08:46:05,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 08:46:05,272 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 148 [2021-10-28 08:46:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:05,274 INFO L225 Difference]: With dead ends: 282 [2021-10-28 08:46:05,274 INFO L226 Difference]: Without dead ends: 277 [2021-10-28 08:46:05,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2021-10-28 08:46:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-10-28 08:46:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 263. [2021-10-28 08:46:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 207 states have (on average 1.1400966183574879) internal successors, (236), 209 states have internal predecessors, (236), 26 states have call successors, (26), 26 states have call predecessors, (26), 29 states have return successors, (29), 27 states have call predecessors, (29), 24 states have call successors, (29) [2021-10-28 08:46:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 291 transitions. [2021-10-28 08:46:05,281 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 291 transitions. Word has length 148 [2021-10-28 08:46:05,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:05,282 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 291 transitions. [2021-10-28 08:46:05,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 08:46:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 291 transitions. [2021-10-28 08:46:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-10-28 08:46:05,284 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:05,284 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:05,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-28 08:46:05,284 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1867828009, now seen corresponding path program 1 times [2021-10-28 08:46:05,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:05,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716331240] [2021-10-28 08:46:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:05,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:46:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-10-28 08:46:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-10-28 08:46:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-10-28 08:46:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 08:46:05,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:05,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716331240] [2021-10-28 08:46:05,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716331240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:05,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:05,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-10-28 08:46:05,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669252680] [2021-10-28 08:46:05,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 08:46:05,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:05,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 08:46:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-10-28 08:46:05,877 INFO L87 Difference]: Start difference. First operand 263 states and 291 transitions. Second operand has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2021-10-28 08:46:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:06,748 INFO L93 Difference]: Finished difference Result 301 states and 336 transitions. [2021-10-28 08:46:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 08:46:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2021-10-28 08:46:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:06,750 INFO L225 Difference]: With dead ends: 301 [2021-10-28 08:46:06,750 INFO L226 Difference]: Without dead ends: 263 [2021-10-28 08:46:06,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2021-10-28 08:46:06,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-28 08:46:06,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2021-10-28 08:46:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 203 states have (on average 1.1280788177339902) internal successors, (229), 205 states have internal predecessors, (229), 25 states have call successors, (25), 25 states have call predecessors, (25), 28 states have return successors, (28), 26 states have call predecessors, (28), 23 states have call successors, (28) [2021-10-28 08:46:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 282 transitions. [2021-10-28 08:46:06,755 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 282 transitions. Word has length 150 [2021-10-28 08:46:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:06,756 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 282 transitions. [2021-10-28 08:46:06,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2021-10-28 08:46:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 282 transitions. [2021-10-28 08:46:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-28 08:46:06,758 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:06,758 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:06,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-28 08:46:06,759 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:06,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:06,759 INFO L85 PathProgramCache]: Analyzing trace with hash -495529015, now seen corresponding path program 1 times [2021-10-28 08:46:06,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:06,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210903262] [2021-10-28 08:46:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:06,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:06,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:46:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-10-28 08:46:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-10-28 08:46:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-10-28 08:46:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 08:46:07,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:07,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210903262] [2021-10-28 08:46:07,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210903262] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:07,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:07,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 08:46:07,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788047097] [2021-10-28 08:46:07,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 08:46:07,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 08:46:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:46:07,174 INFO L87 Difference]: Start difference. First operand 257 states and 282 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-10-28 08:46:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:07,774 INFO L93 Difference]: Finished difference Result 254 states and 276 transitions. [2021-10-28 08:46:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:46:07,775 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 155 [2021-10-28 08:46:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:07,776 INFO L225 Difference]: With dead ends: 254 [2021-10-28 08:46:07,776 INFO L226 Difference]: Without dead ends: 243 [2021-10-28 08:46:07,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-10-28 08:46:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-28 08:46:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 229. [2021-10-28 08:46:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 179 states have (on average 1.111731843575419) internal successors, (199), 181 states have internal predecessors, (199), 24 states have call successors, (24), 24 states have call predecessors, (24), 25 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2021-10-28 08:46:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 248 transitions. [2021-10-28 08:46:07,785 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 248 transitions. Word has length 155 [2021-10-28 08:46:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:07,786 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 248 transitions. [2021-10-28 08:46:07,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 5 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-10-28 08:46:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 248 transitions. [2021-10-28 08:46:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-28 08:46:07,787 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:07,788 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:07,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-28 08:46:07,788 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:07,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:07,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1029557280, now seen corresponding path program 1 times [2021-10-28 08:46:07,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:07,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793245200] [2021-10-28 08:46:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:07,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:07,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:46:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-10-28 08:46:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-10-28 08:46:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-10-28 08:46:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 08:46:08,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:08,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793245200] [2021-10-28 08:46:08,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793245200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:08,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:08,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-10-28 08:46:08,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617591504] [2021-10-28 08:46:08,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 08:46:08,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:08,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 08:46:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-28 08:46:08,210 INFO L87 Difference]: Start difference. First operand 229 states and 248 transitions. Second operand has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-10-28 08:46:08,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:08,739 INFO L93 Difference]: Finished difference Result 218 states and 234 transitions. [2021-10-28 08:46:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:46:08,739 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2021-10-28 08:46:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:08,740 INFO L225 Difference]: With dead ends: 218 [2021-10-28 08:46:08,740 INFO L226 Difference]: Without dead ends: 208 [2021-10-28 08:46:08,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-28 08:46:08,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-28 08:46:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-10-28 08:46:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 161 states have (on average 1.0993788819875776) internal successors, (177), 162 states have internal predecessors, (177), 23 states have call successors, (23), 23 states have call predecessors, (23), 23 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-10-28 08:46:08,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2021-10-28 08:46:08,744 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 157 [2021-10-28 08:46:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:08,744 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2021-10-28 08:46:08,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-10-28 08:46:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2021-10-28 08:46:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-10-28 08:46:08,746 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:08,746 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:08,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-28 08:46:08,746 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1506473619, now seen corresponding path program 1 times [2021-10-28 08:46:08,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:08,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228402579] [2021-10-28 08:46:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:08,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:46:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-10-28 08:46:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-10-28 08:46:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-10-28 08:46:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 08:46:09,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:09,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228402579] [2021-10-28 08:46:09,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228402579] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:09,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:09,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-10-28 08:46:09,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625624932] [2021-10-28 08:46:09,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 08:46:09,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:09,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 08:46:09,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-28 08:46:09,243 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 08:46:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:10,520 INFO L93 Difference]: Finished difference Result 351 states and 375 transitions. [2021-10-28 08:46:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-28 08:46:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2021-10-28 08:46:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:10,521 INFO L225 Difference]: With dead ends: 351 [2021-10-28 08:46:10,521 INFO L226 Difference]: Without dead ends: 211 [2021-10-28 08:46:10,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2021-10-28 08:46:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-28 08:46:10,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2021-10-28 08:46:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 161 states have (on average 1.093167701863354) internal successors, (176), 162 states have internal predecessors, (176), 23 states have call successors, (23), 23 states have call predecessors, (23), 23 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-10-28 08:46:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2021-10-28 08:46:10,526 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 158 [2021-10-28 08:46:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:10,527 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2021-10-28 08:46:10,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 8 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 08:46:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2021-10-28 08:46:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-10-28 08:46:10,528 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:46:10,529 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:10,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-28 08:46:10,529 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:46:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:46:10,530 INFO L85 PathProgramCache]: Analyzing trace with hash 424652015, now seen corresponding path program 1 times [2021-10-28 08:46:10,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:46:10,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643883051] [2021-10-28 08:46:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:46:10,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:46:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:10,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:46:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 08:46:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 08:46:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:46:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:46:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 08:46:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 08:46:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:46:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 08:46:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:46:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-28 08:46:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-10-28 08:46:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-10-28 08:46:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-10-28 08:46:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:46:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 08:46:11,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:46:11,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643883051] [2021-10-28 08:46:11,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643883051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:46:11,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:46:11,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-10-28 08:46:11,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046534648] [2021-10-28 08:46:11,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-28 08:46:11,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:46:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-28 08:46:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-10-28 08:46:11,162 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 08:46:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:12,330 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions. [2021-10-28 08:46:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-28 08:46:12,331 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2021-10-28 08:46:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:12,331 INFO L225 Difference]: With dead ends: 208 [2021-10-28 08:46:12,331 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:46:12,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1783, Unknown=0, NotChecked=0, Total=2070 [2021-10-28 08:46:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:46:12,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:46:12,332 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) [2021-10-28 08:46:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:46:12,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2021-10-28 08:46:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:12,333 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:46:12,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 12 states have internal predecessors, (104), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 08:46:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:46:12,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:46:12,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:46:12,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 08:46:12,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-28 08:46:12,340 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:46:12,342 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:46:12,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:46:12 BoogieIcfgContainer [2021-10-28 08:46:12,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:46:12,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:46:12,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:46:12,345 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:46:12,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:44:52" (3/4) ... [2021-10-28 08:46:12,349 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:46:12,358 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-10-28 08:46:12,358 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoRegisterDeviceInterface [2021-10-28 08:46:12,358 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyProcessQueuedRequests [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyPnp [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyCreateClose [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyPnpComplete [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-10-28 08:46:12,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FloppyStartDevice [2021-10-28 08:46:12,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure PsCreateSystemThread [2021-10-28 08:46:12,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ObReferenceObjectByHandle [2021-10-28 08:46:12,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoBuildDeviceIoControlRequest [2021-10-28 08:46:12,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2021-10-28 08:46:12,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2021-10-28 08:46:12,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-10-28 08:46:12,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlQueueIrpToThread [2021-10-28 08:46:12,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-10-28 08:46:12,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 08:46:12,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlFdcDeviceIo [2021-10-28 08:46:12,361 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure FlAcpiConfigureFloppy [2021-10-28 08:46:12,362 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoDeleteSymbolicLink [2021-10-28 08:46:12,362 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoQueryDeviceDescription [2021-10-28 08:46:12,362 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ZwClose [2021-10-28 08:46:12,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2021-10-28 08:46:12,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2021-10-28 08:46:12,389 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 08:46:12,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-28 08:46:12,561 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:46:12,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:46:12,569 INFO L168 Benchmark]: Toolchain (without parser) took 81836.19 ms. Allocated memory was 123.7 MB in the beginning and 352.3 MB in the end (delta: 228.6 MB). Free memory was 87.9 MB in the beginning and 285.3 MB in the end (delta: -197.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:46:12,570 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 63.1 MB in the beginning and 63.0 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:46:12,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.24 ms. Allocated memory is still 123.7 MB. Free memory was 87.6 MB in the beginning and 89.9 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:46:12,571 INFO L168 Benchmark]: Boogie Preprocessor took 136.94 ms. Allocated memory is still 123.7 MB. Free memory was 89.9 MB in the beginning and 86.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:46:12,571 INFO L168 Benchmark]: RCFGBuilder took 1379.67 ms. Allocated memory is still 123.7 MB. Free memory was 85.7 MB in the beginning and 46.6 MB in the end (delta: 39.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:46:12,572 INFO L168 Benchmark]: TraceAbstraction took 79441.06 ms. Allocated memory was 123.7 MB in the beginning and 352.3 MB in the end (delta: 228.6 MB). Free memory was 45.9 MB in the beginning and 304.2 MB in the end (delta: -258.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:46:12,572 INFO L168 Benchmark]: Witness Printer took 222.50 ms. Allocated memory is still 352.3 MB. Free memory was 304.2 MB in the beginning and 285.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:46:12,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 63.1 MB in the beginning and 63.0 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 633.24 ms. Allocated memory is still 123.7 MB. Free memory was 87.6 MB in the beginning and 89.9 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 136.94 ms. Allocated memory is still 123.7 MB. Free memory was 89.9 MB in the beginning and 86.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1379.67 ms. Allocated memory is still 123.7 MB. Free memory was 85.7 MB in the beginning and 46.6 MB in the end (delta: 39.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 79441.06 ms. Allocated memory was 123.7 MB in the beginning and 352.3 MB in the end (delta: 228.6 MB). Free memory was 45.9 MB in the beginning and 304.2 MB in the end (delta: -258.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 222.50 ms. Allocated memory is still 352.3 MB. Free memory was 304.2 MB in the beginning and 285.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * 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: 670]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 65]: 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 28 procedures, 313 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 79.2s, OverallIterations: 51, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 60.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 15311 SDtfs, 21994 SDslu, 35616 SDs, 0 SdLazy, 57322 SolverSat, 7549 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1520 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 825 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2856 ImplicationChecksByTransitivity, 18.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=831occurred in iteration=11, InterpolantAutomatonStates: 665, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 51 MinimizatonAttempts, 2436 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 3807 NumberOfCodeBlocks, 3807 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 3756 ConstructedInterpolants, 0 QuantifiedInterpolants, 17225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 PerfectInterpolantSequences, 204/204 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! [2021-10-28 08:46:12,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad695c0b-6078-4574-ab15-b37569301250/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...