./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i --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_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/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_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/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_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/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 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/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_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/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 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:08:54,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:08:54,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:08:54,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:08:54,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:08:54,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:08:54,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:08:54,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:08:54,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:08:54,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:08:54,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:08:54,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:08:54,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:08:54,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:08:54,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:08:54,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:08:54,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:08:54,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:08:54,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:08:54,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:08:54,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:08:54,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:08:54,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:08:54,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:08:54,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:08:54,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:08:54,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:08:54,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:08:54,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:08:54,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:08:54,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:08:54,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:08:54,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:08:54,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:08:54,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:08:54,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:08:54,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:08:54,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:08:54,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:08:54,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:08:54,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:08:54,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:08:54,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:08:54,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:08:54,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:08:54,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:08:54,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:08:54,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:08:54,588 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:08:54,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:08:54,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:08:54,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:08:54,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:08:54,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:08:54,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:08:54,591 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:08:54,591 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:08:54,591 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:08:54,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:08:54,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:08:54,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:08:54,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:08:54,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:08:54,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:08:54,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:08:54,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:08:54,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:08:54,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:08:54,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:08:54,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:08:54,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:08:54,595 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_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2021-10-28 09:08:54,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:08:54,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:08:54,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:08:54,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:08:54,938 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:08:54,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-10-28 09:08:55,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data/a6e52669e/6376c42d914940cf80bcab8d03dc5c23/FLAG625ce743e [2021-10-28 09:08:55,486 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:08:55,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-10-28 09:08:55,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data/a6e52669e/6376c42d914940cf80bcab8d03dc5c23/FLAG625ce743e [2021-10-28 09:08:56,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data/a6e52669e/6376c42d914940cf80bcab8d03dc5c23 [2021-10-28 09:08:56,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:08:56,023 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:08:56,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:08:56,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:08:56,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:08:56,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f717c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56, skipping insertion in model container [2021-10-28 09:08:56,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:08:56,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:08:56,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:08:56,525 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:08:56,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:08:56,648 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:08:56,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56 WrapperNode [2021-10-28 09:08:56,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:08:56,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:08:56,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:08:56,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:08:56,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:08:56,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:08:56,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:08:56,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:08:56,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (1/1) ... [2021-10-28 09:08:56,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:08:56,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:56,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:56,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:08:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:08:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:08:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 09:08:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:08:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:08:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 09:08:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 09:08:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 09:08:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:08:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:08:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:08:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:08:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:08:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:08:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:08:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:08:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:08:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:08:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:08:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:08:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:08:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:08:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:08:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:08:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:08:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:08:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:08:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:08:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:08:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:08:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:08:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:08:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:08:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:08:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:08:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:08:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:08:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:08:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:08:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:08:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:08:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:08:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:08:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:08:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:08:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:08:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:08:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:08:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:08:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:08:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:08:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:08:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:08:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:08:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:08:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:08:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:08:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:08:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:08:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:08:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:08:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:08:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:08:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:08:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:08:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:08:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:08:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:08:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:08:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:08:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:08:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:08:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:08:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:08:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:08:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:08:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:08:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:08:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:08:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:08:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:08:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:08:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:08:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:08:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:08:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:08:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:08:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:08:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:08:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:08:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:08:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:08:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:08:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:08:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:08:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:08:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:08:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:08:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:08:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:08:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:08:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:08:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:08:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:08:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:08:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:08:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:08:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 09:08:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 09:08:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 09:08:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 09:08:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 09:08:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 09:08:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 09:08:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 09:08:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 09:08:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 09:08:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 09:08:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 09:08:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 09:08:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 09:08:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 09:08:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 09:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 09:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 09:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 09:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 09:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 09:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 09:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 09:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 09:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:08:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:08:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:08:57,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:08:57,627 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:08:57,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:08:57 BoogieIcfgContainer [2021-10-28 09:08:57,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:08:57,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:08:57,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:08:57,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:08:57,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:08:56" (1/3) ... [2021-10-28 09:08:57,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:08:57, skipping insertion in model container [2021-10-28 09:08:57,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:56" (2/3) ... [2021-10-28 09:08:57,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:08:57, skipping insertion in model container [2021-10-28 09:08:57,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:08:57" (3/3) ... [2021-10-28 09:08:57,640 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2021-10-28 09:08:57,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:08:57,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 09:08:57,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:08:57,692 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 09:08:57,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 09:08:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 09:08:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:08:57,712 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:08:57,713 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:57,714 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:08:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1583989328, now seen corresponding path program 1 times [2021-10-28 09:08:57,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:57,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030491669] [2021-10-28 09:08:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:57,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:08:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,128 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 09:08:58,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:58,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030491669] [2021-10-28 09:08:58,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030491669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:58,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:58,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:08:58,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008717650] [2021-10-28 09:08:58,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:08:58,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:58,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:08:58,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:08:58,155 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:08:58,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:58,611 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2021-10-28 09:08:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:08:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:08:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:08:58,625 INFO L225 Difference]: With dead ends: 105 [2021-10-28 09:08:58,625 INFO L226 Difference]: Without dead ends: 96 [2021-10-28 09:08:58,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:08:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-28 09:08:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-10-28 09:08:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 50 states have (on average 1.52) internal successors, (76), 70 states have internal predecessors, (76), 12 states have call successors, (12), 7 states have call predecessors, (12), 12 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2021-10-28 09:08:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 118 transitions. [2021-10-28 09:08:58,701 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 118 transitions. Word has length 9 [2021-10-28 09:08:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:08:58,702 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 118 transitions. [2021-10-28 09:08:58,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:08:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 118 transitions. [2021-10-28 09:08:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:08:58,704 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:08:58,704 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:58,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:08:58,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:08:58,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:58,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1583989329, now seen corresponding path program 1 times [2021-10-28 09:08:58,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:58,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287627636] [2021-10-28 09:08:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:58,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:08:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,960 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 09:08:58,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:58,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287627636] [2021-10-28 09:08:58,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287627636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:58,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:58,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:08:58,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145685508] [2021-10-28 09:08:58,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:08:58,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:58,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:08:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:08:58,964 INFO L87 Difference]: Start difference. First operand 92 states and 118 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:08:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:59,566 INFO L93 Difference]: Finished difference Result 176 states and 238 transitions. [2021-10-28 09:08:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:08:59,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:08:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:08:59,576 INFO L225 Difference]: With dead ends: 176 [2021-10-28 09:08:59,577 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 09:08:59,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:08:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 09:08:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 145. [2021-10-28 09:08:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 112 states have internal predecessors, (143), 17 states have call successors, (17), 11 states have call predecessors, (17), 18 states have return successors, (51), 21 states have call predecessors, (51), 16 states have call successors, (51) [2021-10-28 09:08:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 211 transitions. [2021-10-28 09:08:59,620 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 211 transitions. Word has length 9 [2021-10-28 09:08:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:08:59,621 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 211 transitions. [2021-10-28 09:08:59,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:08:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 211 transitions. [2021-10-28 09:08:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:08:59,622 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:08:59,622 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:59,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:08:59,622 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:08:59,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:59,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1859028932, now seen corresponding path program 1 times [2021-10-28 09:08:59,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:59,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411835928] [2021-10-28 09:08:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:59,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:08:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:09:00,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:09:00,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411835928] [2021-10-28 09:09:00,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411835928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:09:00,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:09:00,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:09:00,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666994527] [2021-10-28 09:09:00,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:09:00,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:09:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:09:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:09:00,009 INFO L87 Difference]: Start difference. First operand 145 states and 211 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:09:00,829 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2021-10-28 09:09:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:09:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:09:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:09:00,832 INFO L225 Difference]: With dead ends: 270 [2021-10-28 09:09:00,833 INFO L226 Difference]: Without dead ends: 270 [2021-10-28 09:09:00,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:09:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-28 09:09:00,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 219. [2021-10-28 09:09:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 151 states have (on average 1.5496688741721854) internal successors, (234), 172 states have internal predecessors, (234), 23 states have call successors, (23), 18 states have call predecessors, (23), 27 states have return successors, (67), 28 states have call predecessors, (67), 22 states have call successors, (67) [2021-10-28 09:09:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 324 transitions. [2021-10-28 09:09:00,853 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 324 transitions. Word has length 10 [2021-10-28 09:09:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:09:00,854 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 324 transitions. [2021-10-28 09:09:00,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 324 transitions. [2021-10-28 09:09:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:09:00,855 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:09:00,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:09:00,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:09:00,855 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:09:00,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:09:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1795322128, now seen corresponding path program 1 times [2021-10-28 09:09:00,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:09:00,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285757851] [2021-10-28 09:09:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:09:00,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:09:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:09:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:01,183 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 09:09:01,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:09:01,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285757851] [2021-10-28 09:09:01,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285757851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:09:01,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:09:01,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:09:01,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704345536] [2021-10-28 09:09:01,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:09:01,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:09:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:09:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:09:01,191 INFO L87 Difference]: Start difference. First operand 219 states and 324 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:02,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:09:02,184 INFO L93 Difference]: Finished difference Result 256 states and 361 transitions. [2021-10-28 09:09:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:09:02,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:09:02,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:09:02,187 INFO L225 Difference]: With dead ends: 256 [2021-10-28 09:09:02,187 INFO L226 Difference]: Without dead ends: 256 [2021-10-28 09:09:02,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:09:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-28 09:09:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 219. [2021-10-28 09:09:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 172 states have internal predecessors, (232), 23 states have call successors, (23), 18 states have call predecessors, (23), 27 states have return successors, (67), 28 states have call predecessors, (67), 22 states have call successors, (67) [2021-10-28 09:09:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 322 transitions. [2021-10-28 09:09:02,203 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 322 transitions. Word has length 11 [2021-10-28 09:09:02,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:09:02,204 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-10-28 09:09:02,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:02,204 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 322 transitions. [2021-10-28 09:09:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:09:02,205 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:09:02,205 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:09:02,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:09:02,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:09:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:09:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash -179588794, now seen corresponding path program 1 times [2021-10-28 09:09:02,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:09:02,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075833358] [2021-10-28 09:09:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:09:02,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:09:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:02,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:09:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:02,353 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 09:09:02,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:09:02,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075833358] [2021-10-28 09:09:02,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075833358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:09:02,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:09:02,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:09:02,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629318725] [2021-10-28 09:09:02,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:09:02,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:09:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:09:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:09:02,361 INFO L87 Difference]: Start difference. First operand 219 states and 322 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:09:03,120 INFO L93 Difference]: Finished difference Result 290 states and 395 transitions. [2021-10-28 09:09:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:09:03,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:09:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:09:03,141 INFO L225 Difference]: With dead ends: 290 [2021-10-28 09:09:03,141 INFO L226 Difference]: Without dead ends: 290 [2021-10-28 09:09:03,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:09:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-28 09:09:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 254. [2021-10-28 09:09:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.5245901639344261) internal successors, (279), 205 states have internal predecessors, (279), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 09:09:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 375 transitions. [2021-10-28 09:09:03,174 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 375 transitions. Word has length 12 [2021-10-28 09:09:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:09:03,174 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 375 transitions. [2021-10-28 09:09:03,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 375 transitions. [2021-10-28 09:09:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:09:03,175 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:09:03,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:09:03,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:09:03,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:09:03,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:09:03,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1272285230, now seen corresponding path program 1 times [2021-10-28 09:09:03,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:09:03,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918795531] [2021-10-28 09:09:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:09:03,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:09:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:09:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:03,379 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 09:09:03,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:09:03,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918795531] [2021-10-28 09:09:03,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918795531] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:09:03,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:09:03,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:09:03,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281749828] [2021-10-28 09:09:03,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:09:03,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:09:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:09:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:09:03,383 INFO L87 Difference]: Start difference. First operand 254 states and 375 transitions. Second operand has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:09:04,135 INFO L93 Difference]: Finished difference Result 280 states and 383 transitions. [2021-10-28 09:09:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:09:04,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 09:09:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:09:04,138 INFO L225 Difference]: With dead ends: 280 [2021-10-28 09:09:04,139 INFO L226 Difference]: Without dead ends: 280 [2021-10-28 09:09:04,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:09:04,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-28 09:09:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 254. [2021-10-28 09:09:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.5136612021857923) internal successors, (277), 205 states have internal predecessors, (277), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 09:09:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2021-10-28 09:09:04,155 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 13 [2021-10-28 09:09:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:09:04,156 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2021-10-28 09:09:04,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2021-10-28 09:09:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:09:04,157 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:09:04,157 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:09:04,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:09:04,158 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:09:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:09:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash 668439832, now seen corresponding path program 1 times [2021-10-28 09:09:04,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:09:04,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130652890] [2021-10-28 09:09:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:09:04,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:09:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:04,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:09:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:09:04,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:09:04,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130652890] [2021-10-28 09:09:04,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130652890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:09:04,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17590068] [2021-10-28 09:09:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:09:04,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:09:04,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:04,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:09:04,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:09:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:04,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:09:04,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:09:04,653 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 09:09:04,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-28 09:09:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:09:04,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17590068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:09:04,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:09:04,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-28 09:09:04,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686124265] [2021-10-28 09:09:04,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:09:04,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:09:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:09:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:09:04,932 INFO L87 Difference]: Start difference. First operand 254 states and 373 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:09:05,697 INFO L93 Difference]: Finished difference Result 301 states and 422 transitions. [2021-10-28 09:09:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:09:05,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:09:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:09:05,700 INFO L225 Difference]: With dead ends: 301 [2021-10-28 09:09:05,700 INFO L226 Difference]: Without dead ends: 301 [2021-10-28 09:09:05,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:09:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-28 09:09:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 257. [2021-10-28 09:09:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 186 states have (on average 1.456989247311828) internal successors, (271), 208 states have internal predecessors, (271), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 09:09:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 367 transitions. [2021-10-28 09:09:05,714 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 367 transitions. Word has length 17 [2021-10-28 09:09:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:09:05,715 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 367 transitions. [2021-10-28 09:09:05,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:09:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 367 transitions. [2021-10-28 09:09:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:09:05,716 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:09:05,716 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:09:05,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:09:05,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:09:05,942 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:09:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:09:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash -753201699, now seen corresponding path program 1 times [2021-10-28 09:09:05,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:09:05,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184218168] [2021-10-28 09:09:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:09:05,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:09:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:09:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:09:06,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:09:06,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184218168] [2021-10-28 09:09:06,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184218168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:09:06,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799717969] [2021-10-28 09:09:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:09:06,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:09:06,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:06,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:09:06,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:09:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:06,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:09:06,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:09:06,698 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-28 09:09:06,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 82 treesize of output 116 [2021-10-28 09:09:16,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 70 [2021-10-28 09:09:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:09:16,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799717969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:09:16,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:09:16,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-28 09:09:16,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124508161] [2021-10-28 09:09:16,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:09:16,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:09:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:09:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:09:16,832 INFO L87 Difference]: Start difference. First operand 257 states and 367 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:10:02,969 WARN L207 SmtUtils]: Spent 9.52 s on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-10-28 09:10:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:10:14,739 INFO L93 Difference]: Finished difference Result 321 states and 444 transitions. [2021-10-28 09:10:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:10:14,740 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-10-28 09:10:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:10:14,743 INFO L225 Difference]: With dead ends: 321 [2021-10-28 09:10:14,743 INFO L226 Difference]: Without dead ends: 321 [2021-10-28 09:10:14,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=251, Invalid=803, Unknown=2, NotChecked=0, Total=1056 [2021-10-28 09:10:14,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-10-28 09:10:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 263. [2021-10-28 09:10:14,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 192 states have (on average 1.4479166666666667) internal successors, (278), 214 states have internal predecessors, (278), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 09:10:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2021-10-28 09:10:14,762 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 18 [2021-10-28 09:10:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:10:14,763 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2021-10-28 09:10:14,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:10:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2021-10-28 09:10:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:10:14,765 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:10:14,765 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:10:14,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:10:14,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:10:14,974 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:10:14,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:10:14,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1874416105, now seen corresponding path program 1 times [2021-10-28 09:10:14,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:10:14,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006682666] [2021-10-28 09:10:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:10:14,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:10:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:10:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:10:15,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:10:15,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006682666] [2021-10-28 09:10:15,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006682666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:10:15,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329435830] [2021-10-28 09:10:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:10:15,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:10:15,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:10:15,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:10:15,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:10:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:15,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:10:15,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:10:15,913 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-28 09:10:15,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 86 [2021-10-28 09:10:15,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 112 [2021-10-28 09:10:19,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 75 [2021-10-28 09:10:19,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2021-10-28 09:10:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:10:20,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329435830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:10:20,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:10:20,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-28 09:10:20,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644447200] [2021-10-28 09:10:20,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:10:20,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:10:20,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:10:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:10:20,204 INFO L87 Difference]: Start difference. First operand 263 states and 374 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:10:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:10:21,763 INFO L93 Difference]: Finished difference Result 310 states and 433 transitions. [2021-10-28 09:10:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:10:21,764 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-28 09:10:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:10:21,767 INFO L225 Difference]: With dead ends: 310 [2021-10-28 09:10:21,767 INFO L226 Difference]: Without dead ends: 310 [2021-10-28 09:10:21,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:10:21,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-28 09:10:21,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 263. [2021-10-28 09:10:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 192 states have (on average 1.4322916666666667) internal successors, (275), 214 states have internal predecessors, (275), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 09:10:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 371 transitions. [2021-10-28 09:10:21,782 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 371 transitions. Word has length 19 [2021-10-28 09:10:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:10:21,782 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 371 transitions. [2021-10-28 09:10:21,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:10:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 371 transitions. [2021-10-28 09:10:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:10:21,784 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:10:21,784 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] [2021-10-28 09:10:21,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:10:22,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 09:10:22,010 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:10:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:10:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 550421903, now seen corresponding path program 1 times [2021-10-28 09:10:22,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:10:22,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740944408] [2021-10-28 09:10:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:10:22,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:10:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:10:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,117 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 09:10:22,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:10:22,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740944408] [2021-10-28 09:10:22,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740944408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:10:22,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:10:22,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:10:22,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872558594] [2021-10-28 09:10:22,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:10:22,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:10:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:10:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:10:22,120 INFO L87 Difference]: Start difference. First operand 263 states and 371 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:10:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:10:22,426 INFO L93 Difference]: Finished difference Result 259 states and 336 transitions. [2021-10-28 09:10:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:10:22,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 09:10:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:10:22,429 INFO L225 Difference]: With dead ends: 259 [2021-10-28 09:10:22,429 INFO L226 Difference]: Without dead ends: 259 [2021-10-28 09:10:22,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:10:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-10-28 09:10:22,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 243. [2021-10-28 09:10:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 178 states have (on average 1.4382022471910112) internal successors, (256), 200 states have internal predecessors, (256), 22 states have call successors, (22), 18 states have call predecessors, (22), 25 states have return successors, (49), 24 states have call predecessors, (49), 21 states have call successors, (49) [2021-10-28 09:10:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 327 transitions. [2021-10-28 09:10:22,440 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 327 transitions. Word has length 23 [2021-10-28 09:10:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:10:22,440 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 327 transitions. [2021-10-28 09:10:22,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:10:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 327 transitions. [2021-10-28 09:10:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:10:22,442 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:10:22,442 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 09:10:22,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:10:22,443 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:10:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:10:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2138371761, now seen corresponding path program 1 times [2021-10-28 09:10:22,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:10:22,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772042600] [2021-10-28 09:10:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:10:22,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:10:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:10:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:10:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 09:10:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:10:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:10:22,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:10:22,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772042600] [2021-10-28 09:10:22,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772042600] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:10:22,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:10:22,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:10:22,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375290293] [2021-10-28 09:10:22,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:10:22,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:10:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:10:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:10:22,560 INFO L87 Difference]: Start difference. First operand 243 states and 327 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:10:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:10:22,766 INFO L93 Difference]: Finished difference Result 204 states and 259 transitions. [2021-10-28 09:10:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:10:22,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2021-10-28 09:10:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:10:22,768 INFO L225 Difference]: With dead ends: 204 [2021-10-28 09:10:22,768 INFO L226 Difference]: Without dead ends: 204 [2021-10-28 09:10:22,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:10:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-28 09:10:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 199. [2021-10-28 09:10:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 144 states have (on average 1.4097222222222223) internal successors, (203), 165 states have internal predecessors, (203), 18 states have call successors, (18), 15 states have call predecessors, (18), 19 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2021-10-28 09:10:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-10-28 09:10:22,780 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 33 [2021-10-28 09:10:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:10:22,780 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-10-28 09:10:22,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:10:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-10-28 09:10:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:10:22,786 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:10:22,788 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:10:22,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:10:22,788 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:10:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:10:22,789 INFO L85 PathProgramCache]: Analyzing trace with hash -138461554, now seen corresponding path program 1 times [2021-10-28 09:10:22,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:10:22,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748817593] [2021-10-28 09:10:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:10:22,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:10:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:10:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:10:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:10:23,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:10:23,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748817593] [2021-10-28 09:10:23,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748817593] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:10:23,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171903088] [2021-10-28 09:10:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:10:23,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:10:23,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:10:23,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:10:23,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:10:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:10:23,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:10:23,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:10:23,551 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-28 09:10:23,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-28 09:10:25,307 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-28 09:10:25,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 55 treesize of output 89 [2021-10-28 09:10:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:10:28,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171903088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:10:28,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:10:28,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 09:10:28,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739414858] [2021-10-28 09:10:28,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:10:28,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:10:28,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:10:28,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:10:28,627 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:10:46,962 WARN L207 SmtUtils]: Spent 10.41 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-28 09:10:58,986 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:10:58,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 09:10:59,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:10:59,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:10:59,188 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 09:10:59,191 INFO L168 Benchmark]: Toolchain (without parser) took 123167.93 ms. Allocated memory was 92.3 MB in the beginning and 251.7 MB in the end (delta: 159.4 MB). Free memory was 50.5 MB in the beginning and 179.3 MB in the end (delta: -128.8 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:10:59,192 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:10:59,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.15 ms. Allocated memory is still 92.3 MB. Free memory was 50.3 MB in the beginning and 57.3 MB in the end (delta: -7.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:10:59,193 INFO L168 Benchmark]: Boogie Preprocessor took 105.27 ms. Allocated memory is still 92.3 MB. Free memory was 57.3 MB in the beginning and 53.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:10:59,193 INFO L168 Benchmark]: RCFGBuilder took 871.77 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 53.9 MB in the beginning and 78.4 MB in the end (delta: -24.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:10:59,194 INFO L168 Benchmark]: TraceAbstraction took 121560.10 ms. Allocated memory was 111.1 MB in the beginning and 251.7 MB in the end (delta: 140.5 MB). Free memory was 78.2 MB in the beginning and 179.3 MB in the end (delta: -101.0 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:10:59,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 622.15 ms. Allocated memory is still 92.3 MB. Free memory was 50.3 MB in the beginning and 57.3 MB in the end (delta: -7.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 105.27 ms. Allocated memory is still 92.3 MB. Free memory was 57.3 MB in the beginning and 53.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 871.77 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 53.9 MB in the beginning and 78.4 MB in the end (delta: -24.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 121560.10 ms. Allocated memory was 111.1 MB in the beginning and 251.7 MB in the end (delta: 140.5 MB). Free memory was 78.2 MB in the beginning and 179.3 MB in the end (delta: -101.0 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:11:01,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:11:01,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:11:01,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:11:01,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:11:01,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:11:01,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:11:01,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:11:01,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:11:01,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:11:01,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:11:01,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:11:01,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:11:01,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:11:01,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:11:01,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:11:01,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:11:01,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:11:01,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:11:01,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:11:01,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:11:01,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:11:01,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:11:01,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:11:01,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:11:01,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:11:01,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:11:01,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:11:01,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:11:01,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:11:01,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:11:01,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:11:01,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:11:01,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:11:01,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:11:01,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:11:01,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:11:01,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:11:01,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:11:01,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:11:01,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:11:01,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:11:01,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:11:01,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:11:01,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:11:01,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:11:01,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:11:01,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:11:01,873 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:11:01,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:11:01,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:11:01,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:11:01,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:11:01,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:11:01,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:11:01,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:11:01,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:11:01,875 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:11:01,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:11:01,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:11:01,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:11:01,877 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:11:01,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:11:01,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:11:01,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:11:01,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:11:01,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:11:01,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:11:01,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:11:01,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:11:01,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:11:01,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:11:01,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:11:01,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:11:01,881 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2021-10-28 09:11:02,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:11:02,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:11:02,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:11:02,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:11:02,337 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:11:02,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-10-28 09:11:02,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data/478299590/c5ebc4f132254e29b40866a2f146fd59/FLAG12d4ae874 [2021-10-28 09:11:03,115 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:11:03,116 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-10-28 09:11:03,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data/478299590/c5ebc4f132254e29b40866a2f146fd59/FLAG12d4ae874 [2021-10-28 09:11:03,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/data/478299590/c5ebc4f132254e29b40866a2f146fd59 [2021-10-28 09:11:03,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:11:03,345 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:11:03,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:11:03,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:11:03,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:11:03,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:11:03" (1/1) ... [2021-10-28 09:11:03,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c17080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:03, skipping insertion in model container [2021-10-28 09:11:03,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:11:03" (1/1) ... [2021-10-28 09:11:03,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:11:03,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:11:03,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:11:03,977 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:11:04,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:11:04,087 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:11:04,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04 WrapperNode [2021-10-28 09:11:04,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:11:04,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:11:04,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:11:04,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:11:04,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (1/1) ... [2021-10-28 09:11:04,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (1/1) ... [2021-10-28 09:11:04,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (1/1) ... [2021-10-28 09:11:04,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (1/1) ... [2021-10-28 09:11:04,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (1/1) ... [2021-10-28 09:11:04,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (1/1) ... [2021-10-28 09:11:04,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (1/1) ... [2021-10-28 09:11:04,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:11:04,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:11:04,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:11:04,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:11:04,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (1/1) ... [2021-10-28 09:11:04,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:11:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:11:04,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:11:04,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:11:04,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:11:04,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:11:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 09:11:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:11:04,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:11:04,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:11:04,339 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 09:11:04,339 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 09:11:04,340 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 09:11:04,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:11:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:11:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:11:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:11:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:11:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:11:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:11:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:11:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:11:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:11:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:11:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:11:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:11:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:11:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:11:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:11:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:11:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:11:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:11:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:11:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:11:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:11:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:11:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:11:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:11:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:11:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:11:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:11:04,347 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:11:04,347 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:11:04,347 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:11:04,347 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:11:04,347 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:11:04,348 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:11:04,348 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:11:04,348 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:11:04,348 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:11:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:11:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:11:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:11:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:11:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:11:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:11:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:11:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:11:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:11:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:11:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:11:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:11:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:11:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:11:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:11:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:11:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:11:04,354 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:11:04,354 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:11:04,355 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:11:04,355 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:11:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:11:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:11:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:11:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:11:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:11:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:11:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:11:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:11:04,358 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:11:04,358 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:11:04,358 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:11:04,358 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:11:04,358 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:11:04,358 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:11:04,359 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:11:04,359 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:11:04,359 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:11:04,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:11:04,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:11:04,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:11:04,360 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:11:04,360 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:11:04,360 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:11:04,360 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:11:04,360 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:11:04,360 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:11:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:11:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:11:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:11:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:11:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:11:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:11:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:11:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:11:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:11:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:11:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:11:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:11:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:11:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:11:04,376 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:11:04,376 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:11:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:11:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:11:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:11:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:11:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:11:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:11:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:11:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 09:11:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 09:11:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:11:04,379 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 09:11:04,379 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 09:11:04,379 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 09:11:04,379 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 09:11:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 09:11:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 09:11:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 09:11:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 09:11:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 09:11:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 09:11:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 09:11:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 09:11:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 09:11:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 09:11:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 09:11:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 09:11:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 09:11:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 09:11:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 09:11:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 09:11:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 09:11:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 09:11:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 09:11:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 09:11:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 09:11:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 09:11:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 09:11:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 09:11:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 09:11:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 09:11:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 09:11:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 09:11:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 09:11:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 09:11:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 09:11:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 09:11:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 09:11:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 09:11:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 09:11:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 09:11:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 09:11:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 09:11:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 09:11:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 09:11:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 09:11:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 09:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 09:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:11:04,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:11:05,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:11:05,203 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:11:05,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:11:05 BoogieIcfgContainer [2021-10-28 09:11:05,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:11:05,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:11:05,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:11:05,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:11:05,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:11:03" (1/3) ... [2021-10-28 09:11:05,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f820f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:11:05, skipping insertion in model container [2021-10-28 09:11:05,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:11:04" (2/3) ... [2021-10-28 09:11:05,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f820f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:11:05, skipping insertion in model container [2021-10-28 09:11:05,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:11:05" (3/3) ... [2021-10-28 09:11:05,214 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2021-10-28 09:11:05,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:11:05,221 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 09:11:05,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:11:05,281 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 09:11:05,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 09:11:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 09:11:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:11:05,352 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:11:05,352 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:11:05,353 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:11:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:11:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1137100954, now seen corresponding path program 1 times [2021-10-28 09:11:05,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:11:05,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668854994] [2021-10-28 09:11:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:11:05,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:11:05,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:11:05,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:11:05,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:11:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:11:05,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:11:05,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:11:06,119 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 09:11:06,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 69 [2021-10-28 09:11:07,228 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 09:11:07,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:11:07,307 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 09:11:07,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:11:07,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668854994] [2021-10-28 09:11:07,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668854994] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:11:07,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:11:07,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:11:07,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635585682] [2021-10-28 09:11:07,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:11:07,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:11:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:11:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:11:07,343 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:11:07,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:11:07,529 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2021-10-28 09:11:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:11:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:11:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:11:07,544 INFO L225 Difference]: With dead ends: 93 [2021-10-28 09:11:07,544 INFO L226 Difference]: Without dead ends: 87 [2021-10-28 09:11:07,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:11:07,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-28 09:11:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2021-10-28 09:11:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.565217391304348) internal successors, (72), 65 states have internal predecessors, (72), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2021-10-28 09:11:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2021-10-28 09:11:07,596 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 9 [2021-10-28 09:11:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:11:07,597 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2021-10-28 09:11:07,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:11:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2021-10-28 09:11:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:11:07,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:11:07,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:11:07,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:11:07,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:11:07,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:11:07,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:11:07,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1137100953, now seen corresponding path program 1 times [2021-10-28 09:11:07,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:11:07,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752130647] [2021-10-28 09:11:07,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:11:07,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:11:07,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:11:07,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:11:07,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:11:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:11:08,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:11:08,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:11:08,309 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 09:11:08,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-28 09:11:08,457 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 09:11:08,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:11:08,837 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 09:11:08,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:11:08,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752130647] [2021-10-28 09:11:08,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752130647] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:11:08,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:11:08,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 09:11:08,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727392844] [2021-10-28 09:11:08,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:11:08,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:11:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:11:08,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:11:08,841 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:11:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:11:09,512 INFO L93 Difference]: Finished difference Result 172 states and 231 transitions. [2021-10-28 09:11:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:11:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 9 [2021-10-28 09:11:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:11:09,516 INFO L225 Difference]: With dead ends: 172 [2021-10-28 09:11:09,517 INFO L226 Difference]: Without dead ends: 172 [2021-10-28 09:11:09,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:11:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-28 09:11:09,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2021-10-28 09:11:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 91 states have (on average 1.5714285714285714) internal successors, (143), 110 states have internal predecessors, (143), 16 states have call successors, (16), 11 states have call predecessors, (16), 15 states have return successors, (41), 18 states have call predecessors, (41), 15 states have call successors, (41) [2021-10-28 09:11:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 200 transitions. [2021-10-28 09:11:09,541 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 200 transitions. Word has length 9 [2021-10-28 09:11:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:11:09,542 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 200 transitions. [2021-10-28 09:11:09,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:11:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 200 transitions. [2021-10-28 09:11:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:11:09,543 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:11:09,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:11:09,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:11:09,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:11:09,756 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:11:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:11:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash -890391164, now seen corresponding path program 1 times [2021-10-28 09:11:09,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:11:09,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193389758] [2021-10-28 09:11:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:11:09,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:11:09,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:11:09,760 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:11:09,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:11:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:11:10,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 09:11:10,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:11:10,335 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-28 09:11:10,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 255 treesize of output 299 [2021-10-28 09:11:16,435 INFO L354 Elim1Store]: treesize reduction 36, result has 41.0 percent of original size [2021-10-28 09:11:16,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 126 [2021-10-28 09:11:27,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 109 [2021-10-28 09:11:29,726 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 09:11:29,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:11:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:11:30,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:11:30,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193389758] [2021-10-28 09:11:30,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193389758] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:11:30,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:11:30,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:11:30,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671208253] [2021-10-28 09:11:30,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:11:30,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:11:30,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:11:30,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:11:30,269 INFO L87 Difference]: Start difference. First operand 140 states and 200 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:11:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:11:32,994 INFO L93 Difference]: Finished difference Result 260 states and 372 transitions. [2021-10-28 09:11:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:11:32,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2021-10-28 09:11:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:11:32,999 INFO L225 Difference]: With dead ends: 260 [2021-10-28 09:11:32,999 INFO L226 Difference]: Without dead ends: 260 [2021-10-28 09:11:33,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:11:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-28 09:11:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 213. [2021-10-28 09:11:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 150 states have (on average 1.5666666666666667) internal successors, (235), 170 states have internal predecessors, (235), 23 states have call successors, (23), 18 states have call predecessors, (23), 22 states have return successors, (59), 24 states have call predecessors, (59), 22 states have call successors, (59) [2021-10-28 09:11:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 317 transitions. [2021-10-28 09:11:33,039 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 317 transitions. Word has length 10 [2021-10-28 09:11:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:11:33,040 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 317 transitions. [2021-10-28 09:11:33,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:11:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 317 transitions. [2021-10-28 09:11:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:11:33,041 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:11:33,041 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:11:33,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:11:33,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:11:33,254 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:11:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:11:33,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1832322202, now seen corresponding path program 1 times [2021-10-28 09:11:33,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:11:33,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915763182] [2021-10-28 09:11:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:11:33,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:11:33,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:11:33,264 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:11:33,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:11:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:11:33,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:11:33,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:11:33,932 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-28 09:11:33,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 124 [2021-10-28 09:11:33,946 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:11:33,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 167 [2021-10-28 09:11:37,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:11:37,725 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-28 09:11:37,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 76 [2021-10-28 09:11:44,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 83 [2021-10-28 09:11:44,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2021-10-28 09:11:47,989 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 09:11:47,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:11:48,848 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 09:11:48,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:11:48,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915763182] [2021-10-28 09:11:48,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915763182] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:11:48,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:11:48,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:11:48,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673970366] [2021-10-28 09:11:48,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:11:48,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:11:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:11:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:11:48,851 INFO L87 Difference]: Start difference. First operand 213 states and 317 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:11:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:11:50,989 INFO L93 Difference]: Finished difference Result 394 states and 571 transitions. [2021-10-28 09:11:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:11:50,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2021-10-28 09:11:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:11:50,997 INFO L225 Difference]: With dead ends: 394 [2021-10-28 09:11:50,997 INFO L226 Difference]: Without dead ends: 394 [2021-10-28 09:11:50,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:11:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-10-28 09:11:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 319. [2021-10-28 09:11:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 230 states have (on average 1.5521739130434782) internal successors, (357), 255 states have internal predecessors, (357), 34 states have call successors, (34), 27 states have call predecessors, (34), 37 states have return successors, (114), 36 states have call predecessors, (114), 33 states have call successors, (114) [2021-10-28 09:11:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 505 transitions. [2021-10-28 09:11:51,046 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 505 transitions. Word has length 11 [2021-10-28 09:11:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:11:51,047 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 505 transitions. [2021-10-28 09:11:51,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:11:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 505 transitions. [2021-10-28 09:11:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:11:51,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:11:51,048 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:11:51,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:11:51,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:11:51,262 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 09:11:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:11:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash -967413306, now seen corresponding path program 1 times [2021-10-28 09:11:51,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:11:51,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630507698] [2021-10-28 09:11:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:11:51,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:11:51,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:11:51,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:11:51,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:11:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:11:51,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:11:51,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:11:51,827 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 09:11:51,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 91 treesize of output 133 [2021-10-28 09:11:55,295 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:11:55,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2021-10-28 09:12:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:04,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:12:04,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:04,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:12:04,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630507698] [2021-10-28 09:12:04,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630507698] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:04,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:04,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:12:04,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155277177] [2021-10-28 09:12:04,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:12:04,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:12:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:12:04,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:12:04,914 INFO L87 Difference]: Start difference. First operand 319 states and 505 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:12:17,604 WARN L207 SmtUtils]: Spent 12.38 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-28 09:12:52,128 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:12:52,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 09:12:52,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:52,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:12:52,334 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream Closed at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 09:12:52,338 INFO L168 Benchmark]: Toolchain (without parser) took 108992.45 ms. Allocated memory was 60.8 MB in the beginning and 188.7 MB in the end (delta: 127.9 MB). Free memory was 39.6 MB in the beginning and 106.5 MB in the end (delta: -66.9 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:12:52,338 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 60.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:12:52,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.04 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 34.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:12:52,339 INFO L168 Benchmark]: Boogie Preprocessor took 132.14 ms. Allocated memory is still 60.8 MB. Free memory was 34.6 MB in the beginning and 30.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:12:52,340 INFO L168 Benchmark]: RCFGBuilder took 980.87 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 30.9 MB in the beginning and 49.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:12:52,341 INFO L168 Benchmark]: TraceAbstraction took 107128.63 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 48.3 MB in the beginning and 106.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:12:52,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 60.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 744.04 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 34.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 132.14 ms. Allocated memory is still 60.8 MB. Free memory was 34.6 MB in the beginning and 30.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 980.87 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 30.9 MB in the beginning and 49.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 107128.63 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 48.3 MB in the beginning and 106.5 MB in the end (delta: -58.2 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaaca4a-be4e-4d55-9969-f7ee96c6acbb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...