./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD --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 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD --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 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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 23:31:33,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:31:33,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:31:33,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:31:33,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:31:33,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:31:33,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:31:33,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:31:33,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:31:33,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:31:33,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:31:33,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:31:33,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:31:33,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:31:33,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:31:33,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:31:33,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:31:33,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:31:33,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:31:33,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:31:33,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:31:33,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:31:33,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:31:33,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:31:33,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:31:33,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:31:33,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:31:33,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:31:33,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:31:33,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:31:33,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:31:33,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:31:33,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:31:33,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:31:33,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:31:33,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:31:33,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:31:33,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:31:33,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:31:33,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:31:33,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:31:33,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:31:33,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:31:33,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:31:33,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:31:33,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:31:33,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:31:33,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:31:33,582 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:31:33,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:31:33,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:31:33,582 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:31:33,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:31:33,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:31:33,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:31:33,583 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:31:33,583 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:31:33,583 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:31:33,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:31:33,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:31:33,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:31:33,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:31:33,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:31:33,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:31:33,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:31:33,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:31:33,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:31:33,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:31:33,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:31:33,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:31:33,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:31:33,591 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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-28 23:31:33,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:31:33,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:31:33,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:31:33,989 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:31:33,990 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:31:33,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 23:31:34,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data/b51c4e061/55899e2df78d4397842d7b02ae477fff/FLAGdc3b5b6f3 [2021-10-28 23:31:34,680 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:31:34,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 23:31:34,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data/b51c4e061/55899e2df78d4397842d7b02ae477fff/FLAGdc3b5b6f3 [2021-10-28 23:31:34,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data/b51c4e061/55899e2df78d4397842d7b02ae477fff [2021-10-28 23:31:34,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:31:34,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:31:34,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:34,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:31:34,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:31:34,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e1524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34, skipping insertion in model container [2021-10-28 23:31:34,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:31:35,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:31:35,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:35,575 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:31:35,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:35,702 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:31:35,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35 WrapperNode [2021-10-28 23:31:35,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:35,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:31:35,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:31:35,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:31:35,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (1/1) ... [2021-10-28 23:31:35,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (1/1) ... [2021-10-28 23:31:35,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (1/1) ... [2021-10-28 23:31:35,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (1/1) ... [2021-10-28 23:31:35,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (1/1) ... [2021-10-28 23:31:35,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (1/1) ... [2021-10-28 23:31:35,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (1/1) ... [2021-10-28 23:31:35,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:31:35,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:31:35,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:31:35,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:31:35,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (1/1) ... [2021-10-28 23:31:35,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:31:35,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:35,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:35,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:31:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:31:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:31:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 23:31:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:31:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:31:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 23:31:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 23:31:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 23:31:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:31:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:31:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:31:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:31:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:31:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:31:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:31:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:31:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:31:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:31:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:31:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:31:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:31:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:31:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:31:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:31:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:31:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:31:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:31:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:31:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:31:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:31:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:31:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:31:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:31:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:31:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:31:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:31:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:31:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:31:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:31:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:31:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:31:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:31:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:31:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:31:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:31:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:31:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:31:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:31:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:31:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:31:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:31:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:31:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:31:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:31:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:31:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:31:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:31:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:31:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:31:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:31:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:31:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:31:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:31:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:31:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:31:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:31:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:31:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:31:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:31:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:31:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:31:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:31:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:31:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:31:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:31:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:31:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:31:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:31:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:31:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:31:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:31:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:31:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:31:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:31:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:31:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:31:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:31:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:31:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:31:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:31:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:31:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:31:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:31:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:31:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:31:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:31:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:31:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:31:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:31:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:31:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:31:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:31:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:31:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:31:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:31:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:31:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:31:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:31:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:31:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:31:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:31:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:31:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:31:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:31:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 23:31:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 23:31:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 23:31:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 23:31:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 23:31:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 23:31:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 23:31:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 23:31:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 23:31:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 23:31:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 23:31:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 23:31:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 23:31:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 23:31:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 23:31:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 23:31:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 23:31:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 23:31:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 23:31:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 23:31:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 23:31:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 23:31:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 23:31:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 23:31:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 23:31:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 23:31:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 23:31:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 23:31:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 23:31:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 23:31:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 23:31:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 23:31:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 23:31:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 23:31:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 23:31:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 23:31:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 23:31:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 23:31:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 23:31:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 23:31:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 23:31:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 23:31:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 23:31:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 23:31:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 23:31:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 23:31:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 23:31:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 23:31:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 23:31:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:31:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 23:31:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 23:31:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:31:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:31:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:31:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:31:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:31:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:31:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:31:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 23:31:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:31:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:31:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:31:36,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:31:36,663 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 23:31:36,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:36 BoogieIcfgContainer [2021-10-28 23:31:36,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:31:36,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:31:36,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:31:36,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:31:36,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:31:34" (1/3) ... [2021-10-28 23:31:36,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fafbc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:31:36, skipping insertion in model container [2021-10-28 23:31:36,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:35" (2/3) ... [2021-10-28 23:31:36,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fafbc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:31:36, skipping insertion in model container [2021-10-28 23:31:36,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:36" (3/3) ... [2021-10-28 23:31:36,679 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-28 23:31:36,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:31:36,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 23:31:36,769 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:31:36,775 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 23:31:36,775 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 23:31:36,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 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 23:31:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:31:36,818 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:36,818 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:36,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:36,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:36,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1891287210, now seen corresponding path program 1 times [2021-10-28 23:31:36,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:36,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561808216] [2021-10-28 23:31:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:36,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:37,391 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 23:31:37,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:37,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561808216] [2021-10-28 23:31:37,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561808216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:37,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:37,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:31:37,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438068498] [2021-10-28 23:31:37,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:31:37,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:31:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:31:37,422 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 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 23:31:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:37,891 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-10-28 23:31:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:31:37,893 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 23:31:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:37,904 INFO L225 Difference]: With dead ends: 106 [2021-10-28 23:31:37,905 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 23:31:37,906 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 23:31:37,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 23:31:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2021-10-28 23:31:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.58) internal successors, (79), 73 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2021-10-28 23:31:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2021-10-28 23:31:37,964 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 9 [2021-10-28 23:31:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:37,965 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2021-10-28 23:31:37,965 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 23:31:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2021-10-28 23:31:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:31:37,967 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:37,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:37,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:31:37,967 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1891287209, now seen corresponding path program 1 times [2021-10-28 23:31:37,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:37,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451674053] [2021-10-28 23:31:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:37,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:38,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:38,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:38,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451674053] [2021-10-28 23:31:38,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451674053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:38,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:38,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:31:38,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636095703] [2021-10-28 23:31:38,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:31:38,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:38,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:31:38,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:31:38,229 INFO L87 Difference]: Start difference. First operand 93 states and 119 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 23:31:38,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:38,920 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-10-28 23:31:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:31:38,920 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 23:31:38,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:38,923 INFO L225 Difference]: With dead ends: 175 [2021-10-28 23:31:38,924 INFO L226 Difference]: Without dead ends: 175 [2021-10-28 23:31:38,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:31:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-28 23:31:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2021-10-28 23:31:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 115 states have internal predecessors, (149), 17 states have call successors, (17), 11 states have call predecessors, (17), 14 states have return successors, (47), 17 states have call predecessors, (47), 16 states have call successors, (47) [2021-10-28 23:31:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2021-10-28 23:31:38,948 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 9 [2021-10-28 23:31:38,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:38,949 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2021-10-28 23:31:38,949 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 23:31:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2021-10-28 23:31:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:31:38,949 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:38,950 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:38,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:31:38,950 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1499638660, now seen corresponding path program 1 times [2021-10-28 23:31:38,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:38,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610332893] [2021-10-28 23:31:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:38,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:39,341 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 23:31:39,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:39,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610332893] [2021-10-28 23:31:39,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610332893] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:39,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:39,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:31:39,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358614957] [2021-10-28 23:31:39,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:31:39,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:39,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:31:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:31:39,344 INFO L87 Difference]: Start difference. First operand 144 states and 213 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 23:31:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:40,204 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-10-28 23:31:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:31:40,205 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 23:31:40,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:40,209 INFO L225 Difference]: With dead ends: 262 [2021-10-28 23:31:40,209 INFO L226 Difference]: Without dead ends: 262 [2021-10-28 23:31:40,209 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 23:31:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-28 23:31:40,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-10-28 23:31:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6170212765957446) internal successors, (228), 165 states have internal predecessors, (228), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-10-28 23:31:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2021-10-28 23:31:40,234 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 10 [2021-10-28 23:31:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:40,234 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2021-10-28 23:31:40,235 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 23:31:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2021-10-28 23:31:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:31:40,235 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:40,236 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:40,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:31:40,236 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash -755841706, now seen corresponding path program 1 times [2021-10-28 23:31:40,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:40,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696340423] [2021-10-28 23:31:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:40,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:40,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:40,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696340423] [2021-10-28 23:31:40,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696340423] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:40,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:40,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:31:40,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329517152] [2021-10-28 23:31:40,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:31:40,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:31:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:31:40,567 INFO L87 Difference]: Start difference. First operand 202 states and 306 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 23:31:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:41,447 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2021-10-28 23:31:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:31:41,447 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 23:31:41,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:41,450 INFO L225 Difference]: With dead ends: 236 [2021-10-28 23:31:41,450 INFO L226 Difference]: Without dead ends: 236 [2021-10-28 23:31:41,450 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 23:31:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-28 23:31:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 202. [2021-10-28 23:31:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6028368794326242) internal successors, (226), 165 states have internal predecessors, (226), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-10-28 23:31:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-10-28 23:31:41,470 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 11 [2021-10-28 23:31:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:41,470 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-10-28 23:31:41,471 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 23:31:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-10-28 23:31:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:31:41,471 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:41,472 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:41,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:31:41,472 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:41,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1956256314, now seen corresponding path program 1 times [2021-10-28 23:31:41,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:41,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606209454] [2021-10-28 23:31:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:41,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:41,624 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 23:31:41,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:41,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606209454] [2021-10-28 23:31:41,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606209454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:41,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:41,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:31:41,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806095204] [2021-10-28 23:31:41,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:31:41,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:31:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:31:41,630 INFO L87 Difference]: Start difference. First operand 202 states and 304 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 23:31:42,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:42,454 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2021-10-28 23:31:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:31:42,456 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 23:31:42,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:42,459 INFO L225 Difference]: With dead ends: 287 [2021-10-28 23:31:42,459 INFO L226 Difference]: Without dead ends: 287 [2021-10-28 23:31:42,459 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 23:31:42,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-28 23:31:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 233. [2021-10-28 23:31:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 195 states have internal predecessors, (269), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 23:31:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2021-10-28 23:31:42,495 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 12 [2021-10-28 23:31:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:42,495 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2021-10-28 23:31:42,495 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 23:31:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2021-10-28 23:31:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:31:42,496 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:42,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:42,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:31:42,497 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:42,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash -514403496, now seen corresponding path program 1 times [2021-10-28 23:31:42,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:42,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965108717] [2021-10-28 23:31:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:42,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:42,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:42,716 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 23:31:42,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:42,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965108717] [2021-10-28 23:31:42,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965108717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:42,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:42,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:31:42,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738175294] [2021-10-28 23:31:42,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:31:42,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:42,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:31:42,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:31:42,719 INFO L87 Difference]: Start difference. First operand 233 states and 348 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 23:31:43,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:43,563 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2021-10-28 23:31:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:31:43,564 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 23:31:43,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:43,567 INFO L225 Difference]: With dead ends: 265 [2021-10-28 23:31:43,567 INFO L226 Difference]: Without dead ends: 265 [2021-10-28 23:31:43,568 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 23:31:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-28 23:31:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2021-10-28 23:31:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 195 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 23:31:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2021-10-28 23:31:43,594 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 13 [2021-10-28 23:31:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:43,594 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2021-10-28 23:31:43,594 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 23:31:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2021-10-28 23:31:43,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:31:43,595 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:43,595 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:43,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:31:43,596 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:43,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash -389968098, now seen corresponding path program 1 times [2021-10-28 23:31:43,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:43,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100321037] [2021-10-28 23:31:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:43,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:43,763 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 23:31:43,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:43,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100321037] [2021-10-28 23:31:43,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100321037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:43,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696333290] [2021-10-28 23:31:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:43,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:43,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:43,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:43,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:31:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:43,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:31:43,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:44,212 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 23:31:44,213 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 23:31:44,609 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 23:31:44,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696333290] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:44,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:44,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-28 23:31:44,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282982545] [2021-10-28 23:31:44,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:31:44,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:31:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:31:44,612 INFO L87 Difference]: Start difference. First operand 233 states and 346 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 23:31:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:45,490 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2021-10-28 23:31:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:31:45,491 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 23:31:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:45,493 INFO L225 Difference]: With dead ends: 267 [2021-10-28 23:31:45,493 INFO L226 Difference]: Without dead ends: 267 [2021-10-28 23:31:45,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:31:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-28 23:31:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2021-10-28 23:31:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 174 states have (on average 1.5114942528735633) internal successors, (263), 199 states have internal predecessors, (263), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 23:31:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2021-10-28 23:31:45,510 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 17 [2021-10-28 23:31:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:45,510 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2021-10-28 23:31:45,511 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 23:31:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2021-10-28 23:31:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:31:45,512 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:45,512 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:45,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:45,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:45,738 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:45,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash 795890845, now seen corresponding path program 1 times [2021-10-28 23:31:45,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:45,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566418360] [2021-10-28 23:31:45,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:45,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:46,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:46,060 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 23:31:46,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:46,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566418360] [2021-10-28 23:31:46,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566418360] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:46,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130676913] [2021-10-28 23:31:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:46,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:46,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:46,067 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:46,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:31:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:46,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:31:46,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:46,447 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-28 23:31:46,447 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 74 treesize of output 108 [2021-10-28 23:31:56,643 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 90 treesize of output 66 [2021-10-28 23:31:57,296 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 23:31:57,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130676913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:57,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:57,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-28 23:31:57,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251825637] [2021-10-28 23:31:57,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:31:57,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:31:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:31:57,300 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 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 23:31:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:59,533 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2021-10-28 23:31:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:31:59,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 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 23:31:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:59,536 INFO L225 Difference]: With dead ends: 294 [2021-10-28 23:31:59,536 INFO L226 Difference]: Without dead ends: 294 [2021-10-28 23:31:59,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:31:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-28 23:31:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2021-10-28 23:31:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.5) internal successors, (270), 205 states have internal predecessors, (270), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 23:31:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2021-10-28 23:31:59,551 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 18 [2021-10-28 23:31:59,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:59,551 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2021-10-28 23:31:59,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 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 23:31:59,552 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2021-10-28 23:31:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:31:59,553 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:59,553 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:59,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 23:31:59,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 23:31:59,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:31:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1097187491, now seen corresponding path program 1 times [2021-10-28 23:31:59,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:59,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275805203] [2021-10-28 23:31:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:59,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:00,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:32:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:00,173 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 23:32:00,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:00,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275805203] [2021-10-28 23:32:00,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275805203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:00,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893162130] [2021-10-28 23:32:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:00,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:00,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:00,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:00,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:32:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:00,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 23:32:00,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:00,574 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-28 23:32:00,574 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 48 treesize of output 83 [2021-10-28 23:32:00,594 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 172 treesize of output 164 [2021-10-28 23:32:04,169 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 86 treesize of output 62 [2021-10-28 23:32:04,177 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 59 treesize of output 47 [2021-10-28 23:32:04,927 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 23:32:04,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893162130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:04,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:04,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-28 23:32:04,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103766446] [2021-10-28 23:32:04,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:32:04,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:32:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:32:04,932 INFO L87 Difference]: Start difference. First operand 243 states and 349 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 23:32:06,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:06,640 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2021-10-28 23:32:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:32:06,641 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 23:32:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:06,645 INFO L225 Difference]: With dead ends: 272 [2021-10-28 23:32:06,645 INFO L226 Difference]: Without dead ends: 272 [2021-10-28 23:32:06,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:32:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-28 23:32:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-10-28 23:32:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 205 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 23:32:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2021-10-28 23:32:06,681 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 19 [2021-10-28 23:32:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:06,681 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2021-10-28 23:32:06,682 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 23:32:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2021-10-28 23:32:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:32:06,683 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:06,683 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 23:32:06,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:06,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 23:32:06,905 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:32:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash -321978897, now seen corresponding path program 1 times [2021-10-28 23:32:06,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:06,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668522236] [2021-10-28 23:32:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:06,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:32:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:07,030 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 23:32:07,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:07,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668522236] [2021-10-28 23:32:07,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668522236] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:07,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:07,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:32:07,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615095430] [2021-10-28 23:32:07,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:32:07,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:32:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:07,034 INFO L87 Difference]: Start difference. First operand 243 states and 346 transitions. Second operand has 4 states, 2 states have (on average 8.5) 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 23:32:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:07,430 INFO L93 Difference]: Finished difference Result 352 states and 523 transitions. [2021-10-28 23:32:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:32:07,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 8.5) 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 23:32:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:07,435 INFO L225 Difference]: With dead ends: 352 [2021-10-28 23:32:07,435 INFO L226 Difference]: Without dead ends: 352 [2021-10-28 23:32:07,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-28 23:32:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 338. [2021-10-28 23:32:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 254 states have (on average 1.5) internal successors, (381), 282 states have internal predecessors, (381), 30 states have call successors, (30), 25 states have call predecessors, (30), 33 states have return successors, (110), 30 states have call predecessors, (110), 29 states have call successors, (110) [2021-10-28 23:32:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 521 transitions. [2021-10-28 23:32:07,457 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 521 transitions. Word has length 23 [2021-10-28 23:32:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:07,458 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 521 transitions. [2021-10-28 23:32:07,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 8.5) 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 23:32:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 521 transitions. [2021-10-28 23:32:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:32:07,459 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:07,459 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 23:32:07,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:32:07,460 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting c2Err3ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:32:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:07,461 INFO L85 PathProgramCache]: Analyzing trace with hash -321978673, now seen corresponding path program 1 times [2021-10-28 23:32:07,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:07,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709344343] [2021-10-28 23:32:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:07,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:32:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:07,569 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 23:32:07,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:07,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709344343] [2021-10-28 23:32:07,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709344343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:07,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:07,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:32:07,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127177796] [2021-10-28 23:32:07,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:32:07,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:32:07,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:07,572 INFO L87 Difference]: Start difference. First operand 338 states and 521 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 23:32:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:07,934 INFO L93 Difference]: Finished difference Result 391 states and 559 transitions. [2021-10-28 23:32:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:32:07,934 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 23:32:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:07,938 INFO L225 Difference]: With dead ends: 391 [2021-10-28 23:32:07,938 INFO L226 Difference]: Without dead ends: 391 [2021-10-28 23:32:07,938 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 23:32:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-28 23:32:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2021-10-28 23:32:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4858156028368794) internal successors, (419), 311 states have internal predecessors, (419), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-10-28 23:32:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 553 transitions. [2021-10-28 23:32:07,959 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 553 transitions. Word has length 23 [2021-10-28 23:32:07,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:07,960 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 553 transitions. [2021-10-28 23:32:07,960 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 23:32:07,960 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 553 transitions. [2021-10-28 23:32:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:32:07,961 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:07,962 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:07,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:32:07,962 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting c2Err1ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:32:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:07,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411157, now seen corresponding path program 1 times [2021-10-28 23:32:07,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:07,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350617986] [2021-10-28 23:32:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:07,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:32:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:08,081 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 23:32:08,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:08,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350617986] [2021-10-28 23:32:08,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350617986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:08,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:08,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:32:08,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197439913] [2021-10-28 23:32:08,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:32:08,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:08,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:32:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:08,084 INFO L87 Difference]: Start difference. First operand 375 states and 553 transitions. Second operand has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 23:32:08,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:08,507 INFO L93 Difference]: Finished difference Result 390 states and 557 transitions. [2021-10-28 23:32:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:32:08,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 24 [2021-10-28 23:32:08,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:08,512 INFO L225 Difference]: With dead ends: 390 [2021-10-28 23:32:08,512 INFO L226 Difference]: Without dead ends: 390 [2021-10-28 23:32:08,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-28 23:32:08,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-10-28 23:32:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4787234042553192) internal successors, (417), 311 states have internal predecessors, (417), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-10-28 23:32:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2021-10-28 23:32:08,557 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 24 [2021-10-28 23:32:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:08,557 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2021-10-28 23:32:08,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 23:32:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2021-10-28 23:32:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:32:08,560 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:08,560 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 23:32:08,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:32:08,560 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:32:08,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1350782223, now seen corresponding path program 1 times [2021-10-28 23:32:08,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:08,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268327864] [2021-10-28 23:32:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:08,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:32:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:32:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 23:32:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:08,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 23:32:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:08,686 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 23:32:08,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:08,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268327864] [2021-10-28 23:32:08,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268327864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:08,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:08,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:32:08,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548646196] [2021-10-28 23:32:08,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:32:08,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:32:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:08,689 INFO L87 Difference]: Start difference. First operand 375 states and 551 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 23:32:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:08,933 INFO L93 Difference]: Finished difference Result 284 states and 399 transitions. [2021-10-28 23:32:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:32:08,934 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 23:32:08,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:08,936 INFO L225 Difference]: With dead ends: 284 [2021-10-28 23:32:08,937 INFO L226 Difference]: Without dead ends: 284 [2021-10-28 23:32:08,937 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 23:32:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-28 23:32:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-28 23:32:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 213 states have (on average 1.4507042253521127) internal successors, (309), 238 states have internal predecessors, (309), 26 states have call successors, (26), 23 states have call predecessors, (26), 24 states have return successors, (64), 22 states have call predecessors, (64), 25 states have call successors, (64) [2021-10-28 23:32:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2021-10-28 23:32:08,952 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 33 [2021-10-28 23:32:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:08,952 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2021-10-28 23:32:08,953 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 23:32:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2021-10-28 23:32:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:32:08,954 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:08,954 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 23:32:08,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:32:08,955 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:32:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:08,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1784623764, now seen corresponding path program 1 times [2021-10-28 23:32:08,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:08,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156986384] [2021-10-28 23:32:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:08,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:32:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:09,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:32:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:09,171 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 23:32:09,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:09,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156986384] [2021-10-28 23:32:09,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156986384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:09,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606236556] [2021-10-28 23:32:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:09,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:09,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:09,178 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:09,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:32:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:09,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:32:09,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:09,734 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-28 23:32:09,734 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 23:32:11,499 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-28 23:32:11,500 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 23:32:14,683 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 23:32:14,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606236556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:14,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:14,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 23:32:14,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587673856] [2021-10-28 23:32:14,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:32:14,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:14,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:32:14,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:32:14,688 INFO L87 Difference]: Start difference. First operand 284 states and 399 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 23:32:27,510 WARN L207 SmtUtils]: Spent 11.40 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-28 23:32:46,413 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 23:32:46,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 23:32:46,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:46,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 23:32:46,615 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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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 23:32:46,619 INFO L168 Benchmark]: Toolchain (without parser) took 71678.26 ms. Allocated memory was 113.2 MB in the beginning and 268.4 MB in the end (delta: 155.2 MB). Free memory was 74.2 MB in the beginning and 197.1 MB in the end (delta: -123.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:46,619 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 113.2 MB. Free memory was 91.9 MB in the beginning and 91.8 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:32:46,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.92 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 76.8 MB in the end (delta: -2.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:46,620 INFO L168 Benchmark]: Boogie Preprocessor took 75.40 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 73.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:46,620 INFO L168 Benchmark]: RCFGBuilder took 885.50 ms. Allocated memory is still 113.2 MB. Free memory was 73.3 MB in the beginning and 47.5 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:46,621 INFO L168 Benchmark]: TraceAbstraction took 69947.74 ms. Allocated memory was 113.2 MB in the beginning and 268.4 MB in the end (delta: 155.2 MB). Free memory was 47.1 MB in the beginning and 197.1 MB in the end (delta: -150.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:46,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 113.2 MB. Free memory was 91.9 MB in the beginning and 91.8 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 760.92 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 76.8 MB in the end (delta: -2.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.40 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 73.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 885.50 ms. Allocated memory is still 113.2 MB. Free memory was 73.3 MB in the beginning and 47.5 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 69947.74 ms. Allocated memory was 113.2 MB in the beginning and 268.4 MB in the end (delta: 155.2 MB). Free memory was 47.1 MB in the beginning and 197.1 MB in the end (delta: -150.0 MB). Peak memory consumption was 6.5 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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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 23:32:49,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:32:49,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:32:49,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:32:49,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:32:49,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:32:49,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:32:49,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:32:49,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:32:49,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:32:49,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:32:49,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:32:49,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:32:49,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:32:49,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:32:49,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:32:49,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:32:49,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:32:49,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:32:49,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:32:49,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:32:49,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:32:49,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:32:49,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:32:49,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:32:49,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:32:49,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:32:49,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:32:49,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:32:49,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:32:49,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:32:49,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:32:49,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:32:49,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:32:49,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:32:49,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:32:49,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:32:49,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:32:49,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:32:49,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:32:49,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:32:49,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:32:49,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:32:49,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:32:49,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:32:49,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:32:49,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:32:49,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:32:49,368 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:32:49,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:32:49,369 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:32:49,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:32:49,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:32:49,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:32:49,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:32:49,372 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:32:49,373 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:32:49,373 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:32:49,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:32:49,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:32:49,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:32:49,374 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:32:49,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:32:49,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:32:49,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:32:49,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:32:49,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:32:49,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:32:49,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:32:49,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:32:49,377 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:32:49,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:32:49,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:32:49,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:32:49,378 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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-28 23:32:49,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:32:49,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:32:49,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:32:49,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:32:49,829 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:32:49,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 23:32:49,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data/4a086a696/8721854d9fb24e229a25070d325d27e0/FLAGae97a15e8 [2021-10-28 23:32:50,563 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:32:50,566 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 23:32:50,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data/4a086a696/8721854d9fb24e229a25070d325d27e0/FLAGae97a15e8 [2021-10-28 23:32:50,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/data/4a086a696/8721854d9fb24e229a25070d325d27e0 [2021-10-28 23:32:50,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:32:50,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:32:50,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:32:50,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:32:50,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:32:50,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:32:50" (1/1) ... [2021-10-28 23:32:50,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e7e011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:50, skipping insertion in model container [2021-10-28 23:32:50,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:32:50" (1/1) ... [2021-10-28 23:32:50,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:32:50,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:32:51,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:32:51,350 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:32:51,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:32:51,454 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:32:51,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51 WrapperNode [2021-10-28 23:32:51,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:32:51,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:32:51,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:32:51,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:32:51,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (1/1) ... [2021-10-28 23:32:51,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (1/1) ... [2021-10-28 23:32:51,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (1/1) ... [2021-10-28 23:32:51,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (1/1) ... [2021-10-28 23:32:51,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (1/1) ... [2021-10-28 23:32:51,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (1/1) ... [2021-10-28 23:32:51,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (1/1) ... [2021-10-28 23:32:51,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:32:51,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:32:51,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:32:51,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:32:51,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (1/1) ... [2021-10-28 23:32:51,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:32:51,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:51,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:32:51,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:32:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:32:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:32:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 23:32:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:32:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:32:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:32:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 23:32:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 23:32:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 23:32:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:32:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:32:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:32:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:32:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:32:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:32:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:32:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:32:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:32:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:32:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:32:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:32:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:32:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:32:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:32:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:32:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:32:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:32:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:32:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:32:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:32:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:32:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:32:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:32:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:32:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:32:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:32:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:32:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:32:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:32:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:32:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:32:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:32:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:32:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:32:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:32:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:32:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:32:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:32:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:32:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:32:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:32:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:32:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:32:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:32:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:32:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:32:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:32:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:32:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:32:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:32:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:32:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:32:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:32:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:32:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:32:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:32:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:32:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:32:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:32:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:32:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:32:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:32:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:32:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:32:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:32:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:32:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:32:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:32:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:32:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:32:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:32:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:32:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:32:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:32:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:32:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:32:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:32:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:32:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:32:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:32:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:32:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:32:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:32:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:32:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:32:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:32:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:32:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:32:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:32:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:32:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:32:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:32:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:32:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:32:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:32:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:32:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:32:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:32:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:32:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:32:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:32:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:32:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:32:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:32:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:32:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 23:32:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 23:32:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 23:32:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 23:32:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 23:32:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 23:32:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 23:32:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 23:32:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 23:32:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 23:32:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 23:32:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 23:32:51,707 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 23:32:51,708 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 23:32:51,708 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 23:32:51,708 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 23:32:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 23:32:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 23:32:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 23:32:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 23:32:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 23:32:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 23:32:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 23:32:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 23:32:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 23:32:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 23:32:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 23:32:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 23:32:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 23:32:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 23:32:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 23:32:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 23:32:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 23:32:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 23:32:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 23:32:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 23:32:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 23:32:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 23:32:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 23:32:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 23:32:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 23:32:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 23:32:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 23:32:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 23:32:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 23:32:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 23:32:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 23:32:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 23:32:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 23:32:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:32:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 23:32:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 23:32:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:32:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:32:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:32:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:32:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:32:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:32:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:32:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 23:32:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:32:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:32:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:32:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:32:52,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:32:52,581 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 23:32:52,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:32:52 BoogieIcfgContainer [2021-10-28 23:32:52,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:32:52,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:32:52,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:32:52,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:32:52,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:32:50" (1/3) ... [2021-10-28 23:32:52,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6a2e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:32:52, skipping insertion in model container [2021-10-28 23:32:52,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:51" (2/3) ... [2021-10-28 23:32:52,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6a2e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:32:52, skipping insertion in model container [2021-10-28 23:32:52,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:32:52" (3/3) ... [2021-10-28 23:32:52,596 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-28 23:32:52,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:32:52,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 23:32:52,656 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:32:52,663 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 23:32:52,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 23:32:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 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 23:32:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:32:52,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:52,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:52,690 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:32:52,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -317410196, now seen corresponding path program 1 times [2021-10-28 23:32:52,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:32:52,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123162497] [2021-10-28 23:32:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:52,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:32:52,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:32:52,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:32:52,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:32:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:52,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:32:52,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:53,480 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 23:32:53,481 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 23:32:54,565 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 23:32:54,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:32:54,637 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 23:32:54,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:32:54,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123162497] [2021-10-28 23:32:54,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123162497] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:54,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:54,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:32:54,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435076064] [2021-10-28 23:32:54,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:32:54,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:32:54,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:32:54,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:54,670 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 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 23:32:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:54,890 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-10-28 23:32:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:32:54,893 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 23:32:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:54,906 INFO L225 Difference]: With dead ends: 97 [2021-10-28 23:32:54,907 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 23:32:54,908 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 23:32:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 23:32:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-10-28 23:32:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 69 states have internal predecessors, (77), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-28 23:32:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-10-28 23:32:54,985 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 9 [2021-10-28 23:32:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:54,985 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-10-28 23:32:54,986 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 23:32:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-10-28 23:32:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:32:54,988 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:54,988 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:55,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:55,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:32:55,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:32:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash -317410195, now seen corresponding path program 1 times [2021-10-28 23:32:55,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:32:55,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000094621] [2021-10-28 23:32:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:55,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:32:55,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:32:55,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:32:55,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:32:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:55,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:32:55,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:55,695 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 23:32:55,695 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 23:32:55,846 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 23:32:55,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:32:56,217 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 23:32:56,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:32:56,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000094621] [2021-10-28 23:32:56,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000094621] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:56,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:56,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:32:56,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790282434] [2021-10-28 23:32:56,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:32:56,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:32:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:32:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:32:56,221 INFO L87 Difference]: Start difference. First operand 87 states and 103 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 23:32:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:56,838 INFO L93 Difference]: Finished difference Result 174 states and 228 transitions. [2021-10-28 23:32:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:32:56,839 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 23:32:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:56,842 INFO L225 Difference]: With dead ends: 174 [2021-10-28 23:32:56,842 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 23:32:56,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:32:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 23:32:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-28 23:32:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.6236559139784945) internal successors, (151), 114 states have internal predecessors, (151), 16 states have call successors, (16), 11 states have call predecessors, (16), 12 states have return successors, (38), 16 states have call predecessors, (38), 15 states have call successors, (38) [2021-10-28 23:32:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2021-10-28 23:32:56,871 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 9 [2021-10-28 23:32:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:56,872 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2021-10-28 23:32:56,872 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 23:32:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2021-10-28 23:32:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:32:56,873 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:56,873 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:56,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:57,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:32:57,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:32:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:57,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1249781436, now seen corresponding path program 1 times [2021-10-28 23:32:57,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:32:57,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110787328] [2021-10-28 23:32:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:57,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:32:57,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:32:57,092 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:32:57,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:32:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:57,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 23:32:57,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:57,766 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-28 23:32:57,766 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 234 treesize of output 278 [2021-10-28 23:33:03,950 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-10-28 23:33:03,950 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 118 treesize of output 118 [2021-10-28 23:33:13,216 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 133 treesize of output 105 [2021-10-28 23:33:15,267 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 23:33:15,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:33:15,685 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 23:33:15,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:33:15,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110787328] [2021-10-28 23:33:15,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110787328] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:33:15,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:33:15,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 23:33:15,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073433222] [2021-10-28 23:33:15,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:33:15,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:33:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:33:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:33:15,689 INFO L87 Difference]: Start difference. First operand 142 states and 205 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 23:33:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:33:17,934 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2021-10-28 23:33:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:33:17,935 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 23:33:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:33:17,939 INFO L225 Difference]: With dead ends: 261 [2021-10-28 23:33:17,939 INFO L226 Difference]: Without dead ends: 261 [2021-10-28 23:33:17,940 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 23:33:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-28 23:33:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2021-10-28 23:33:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 144 states have (on average 1.6180555555555556) internal successors, (233), 165 states have internal predecessors, (233), 21 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (51), 20 states have call predecessors, (51), 20 states have call successors, (51) [2021-10-28 23:33:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-10-28 23:33:17,972 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 10 [2021-10-28 23:33:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:33:17,972 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-10-28 23:33:17,973 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 23:33:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-10-28 23:33:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:33:17,973 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:33:17,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:33:17,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:33:18,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:33:18,188 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:33:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:33:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -88518740, now seen corresponding path program 1 times [2021-10-28 23:33:18,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:33:18,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343715045] [2021-10-28 23:33:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:33:18,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:33:18,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:33:18,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:33:18,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:33:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:33:18,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 23:33:18,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:33:18,816 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-28 23:33:18,817 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 84 treesize of output 117 [2021-10-28 23:33:18,831 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 23:33:18,831 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 451 treesize of output 433 [2021-10-28 23:33:22,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 23:33:22,688 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 23:33:22,689 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 82 treesize of output 72 [2021-10-28 23:33:28,973 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 23:33:28,982 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 23:33:32,795 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 23:33:32,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:33:33,390 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 23:33:33,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:33:33,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343715045] [2021-10-28 23:33:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343715045] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:33:33,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:33:33,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 23:33:33,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781593388] [2021-10-28 23:33:33,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:33:33,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:33:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:33:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:33:33,394 INFO L87 Difference]: Start difference. First operand 202 states and 305 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 23:33:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:33:35,662 INFO L93 Difference]: Finished difference Result 379 states and 540 transitions. [2021-10-28 23:33:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:33:35,664 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 23:33:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:33:35,669 INFO L225 Difference]: With dead ends: 379 [2021-10-28 23:33:35,669 INFO L226 Difference]: Without dead ends: 379 [2021-10-28 23:33:35,669 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 23:33:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-28 23:33:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 304. [2021-10-28 23:33:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 223 states have (on average 1.5964125560538116) internal successors, (356), 247 states have internal predecessors, (356), 31 states have call successors, (31), 24 states have call predecessors, (31), 29 states have return successors, (99), 32 states have call predecessors, (99), 30 states have call successors, (99) [2021-10-28 23:33:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 486 transitions. [2021-10-28 23:33:35,707 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 486 transitions. Word has length 11 [2021-10-28 23:33:35,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:33:35,708 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 486 transitions. [2021-10-28 23:33:35,708 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 23:33:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 486 transitions. [2021-10-28 23:33:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:33:35,709 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:33:35,709 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:33:35,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:33:35,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:33:35,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 23:33:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:33:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1550886470, now seen corresponding path program 1 times [2021-10-28 23:33:35,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:33:35,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509116226] [2021-10-28 23:33:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:33:35,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:33:35,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:33:35,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:33:35,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:33:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:33:36,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:33:36,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:33:36,453 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 23:33:36,454 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 150 treesize of output 190 [2021-10-28 23:33:39,778 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:33:39,779 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 23:33:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:33:49,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:33:49,884 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 23:33:49,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:33:49,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509116226] [2021-10-28 23:33:49,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509116226] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:33:49,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:33:49,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 23:33:49,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053040096] [2021-10-28 23:33:49,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:33:49,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:33:49,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:33:49,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:33:49,886 INFO L87 Difference]: Start difference. First operand 304 states and 486 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 23:34:02,704 WARN L207 SmtUtils]: Spent 12.49 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-28 23:34:39,959 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 23:34:39,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 23:34:39,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 23:34:40,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:40,160 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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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 23:34:40,165 INFO L168 Benchmark]: Toolchain (without parser) took 109386.91 ms. Allocated memory was 50.3 MB in the beginning and 159.4 MB in the end (delta: 109.1 MB). Free memory was 25.2 MB in the beginning and 69.4 MB in the end (delta: -44.2 MB). Peak memory consumption was 64.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:34:40,166 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 50.3 MB. Free memory is still 30.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:34:40,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.23 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.0 MB in the beginning and 33.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:34:40,167 INFO L168 Benchmark]: Boogie Preprocessor took 119.28 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 29.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:34:40,167 INFO L168 Benchmark]: RCFGBuilder took 1007.23 ms. Allocated memory is still 60.8 MB. Free memory was 29.7 MB in the beginning and 29.2 MB in the end (delta: 467.6 kB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:34:40,168 INFO L168 Benchmark]: TraceAbstraction took 107577.08 ms. Allocated memory was 60.8 MB in the beginning and 159.4 MB in the end (delta: 98.6 MB). Free memory was 28.7 MB in the beginning and 69.4 MB in the end (delta: -40.7 MB). Peak memory consumption was 58.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:34:40,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 50.3 MB. Free memory is still 30.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 677.23 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.0 MB in the beginning and 33.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 119.28 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 29.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1007.23 ms. Allocated memory is still 60.8 MB. Free memory was 29.7 MB in the beginning and 29.2 MB in the end (delta: 467.6 kB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 107577.08 ms. Allocated memory was 60.8 MB in the beginning and 159.4 MB in the end (delta: 98.6 MB). Free memory was 28.7 MB in the beginning and 69.4 MB in the end (delta: -40.7 MB). Peak memory consumption was 58.8 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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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_703eb436-b017-4597-862d-857f6f53813b/bin/uautomizer-GMMbpWq8iD/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...