./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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-memcleanup) ) --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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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-memcleanup) ) --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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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 22:54:34,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:54:34,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:54:35,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:54:35,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:54:35,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:54:35,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:54:35,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:54:35,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:54:35,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:54:35,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:54:35,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:54:35,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:54:35,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:54:35,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:54:35,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:54:35,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:54:35,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:54:35,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:54:35,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:54:35,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:54:35,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:54:35,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:54:35,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:54:35,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:54:35,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:54:35,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:54:35,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:54:35,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:54:35,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:54:35,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:54:35,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:54:35,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:54:35,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:54:35,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:54:35,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:54:35,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:54:35,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:54:35,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:54:35,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:54:35,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:54:35,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 22:54:35,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:54:35,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:54:35,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:54:35,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:54:35,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:54:35,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:54:35,189 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:54:35,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:54:35,190 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:54:35,190 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:54:35,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:54:35,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:54:35,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:54:35,191 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:54:35,192 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:54:35,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:54:35,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:54:35,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:54:35,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:54:35,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:54:35,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:54:35,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:54:35,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:35,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:54:35,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:54:35,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:54:35,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:54:35,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:54:35,196 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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-28 22:54:35,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:54:35,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:54:35,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:54:35,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:54:35,573 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:54:35,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 22:54:35,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data/04e625594/be273ad984624f4bae80f3b8b396d86d/FLAG6ea965bc3 [2021-10-28 22:54:36,294 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:54:36,295 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 22:54:36,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data/04e625594/be273ad984624f4bae80f3b8b396d86d/FLAG6ea965bc3 [2021-10-28 22:54:36,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data/04e625594/be273ad984624f4bae80f3b8b396d86d [2021-10-28 22:54:36,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:54:36,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:54:36,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:36,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:54:36,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:54:36,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:36" (1/1) ... [2021-10-28 22:54:36,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2669d795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:36, skipping insertion in model container [2021-10-28 22:54:36,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:36" (1/1) ... [2021-10-28 22:54:36,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:54:36,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:54:37,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:37,083 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:54:37,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:37,209 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:54:37,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37 WrapperNode [2021-10-28 22:54:37,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:37,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:54:37,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:54:37,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:54:37,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (1/1) ... [2021-10-28 22:54:37,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (1/1) ... [2021-10-28 22:54:37,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (1/1) ... [2021-10-28 22:54:37,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (1/1) ... [2021-10-28 22:54:37,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (1/1) ... [2021-10-28 22:54:37,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (1/1) ... [2021-10-28 22:54:37,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (1/1) ... [2021-10-28 22:54:37,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:54:37,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:54:37,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:54:37,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:54:37,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (1/1) ... [2021-10-28 22:54:37,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:37,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:37,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:37,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:54:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 22:54:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:54:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 22:54:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 22:54:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 22:54:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 22:54:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 22:54:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 22:54:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 22:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 22:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 22:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 22:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 22:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 22:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 22:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 22:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 22:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 22:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 22:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 22:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 22:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 22:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 22:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 22:54:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 22:54:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 22:54:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 22:54:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 22:54:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 22:54:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 22:54:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 22:54:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 22:54:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 22:54:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 22:54:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 22:54:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 22:54:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 22:54:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 22:54:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 22:54:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 22:54:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 22:54:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 22:54:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 22:54:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 22:54:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 22:54:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 22:54:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 22:54:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 22:54:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 22:54:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 22:54:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 22:54:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 22:54:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 22:54:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 22:54:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 22:54:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 22:54:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 22:54:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 22:54:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 22:54:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 22:54:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 22:54:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 22:54:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 22:54:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 22:54:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 22:54:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 22:54:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 22:54:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 22:54:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 22:54:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 22:54:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 22:54:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 22:54:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 22:54:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 22:54:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 22:54:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 22:54:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 22:54:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 22:54:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 22:54:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 22:54:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 22:54:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 22:54:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 22:54:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 22:54:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 22:54:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 22:54:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 22:54:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 22:54:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 22:54:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 22:54:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 22:54:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 22:54:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 22:54:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 22:54:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 22:54:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 22:54:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 22:54:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 22:54:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 22:54:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 22:54:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 22:54:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 22:54:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 22:54:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 22:54:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 22:54:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 22:54:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 22:54:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 22:54:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 22:54:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 22:54:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 22:54:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 22:54:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 22:54:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 22:54:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 22:54:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 22:54:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 22:54:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 22:54:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 22:54:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 22:54:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 22:54:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 22:54:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 22:54:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 22:54:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 22:54:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 22:54:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 22:54:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 22:54:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 22:54:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 22:54:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 22:54:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 22:54:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 22:54:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 22:54:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 22:54:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 22:54:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 22:54:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 22:54:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 22:54:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 22:54:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 22:54:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 22:54:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 22:54:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 22:54:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 22:54:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 22:54:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 22:54:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 22:54:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 22:54:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 22:54:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 22:54:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 22:54:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 22:54:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 22:54:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 22:54:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 22:54:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 22:54:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 22:54:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 22:54:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 22:54:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 22:54:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 22:54:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 22:54:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:54:37,529 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 22:54:37,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 22:54:37,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 22:54:37,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:54:37,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 22:54:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:54:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 22:54:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 22:54:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:54:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 22:54:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:54:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:54:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 22:54:38,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:54:38,271 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 22:54:38,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:38 BoogieIcfgContainer [2021-10-28 22:54:38,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:54:38,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:54:38,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:54:38,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:54:38,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:54:36" (1/3) ... [2021-10-28 22:54:38,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772a2ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:38, skipping insertion in model container [2021-10-28 22:54:38,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:37" (2/3) ... [2021-10-28 22:54:38,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772a2ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:38, skipping insertion in model container [2021-10-28 22:54:38,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:38" (3/3) ... [2021-10-28 22:54:38,284 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-28 22:54:38,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:54:38,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 22:54:38,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:54:38,353 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 22:54:38,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 22:54:38,389 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 22:54:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 22:54:38,398 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:38,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:38,400 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 22:54:38,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1891287210, now seen corresponding path program 1 times [2021-10-28 22:54:38,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:38,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828654786] [2021-10-28 22:54:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:38,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:38,931 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 22:54:38,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:38,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828654786] [2021-10-28 22:54:38,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828654786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:38,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:38,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:54:38,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052185464] [2021-10-28 22:54:38,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:54:38,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:38,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:54:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:54:38,962 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 22:54:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:39,499 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-10-28 22:54:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:54:39,501 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 22:54:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:39,517 INFO L225 Difference]: With dead ends: 106 [2021-10-28 22:54:39,535 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 22:54:39,537 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 22:54:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 22:54:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2021-10-28 22:54:39,588 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 22:54:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2021-10-28 22:54:39,593 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 9 [2021-10-28 22:54:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:39,594 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2021-10-28 22:54:39,594 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 22:54:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2021-10-28 22:54:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 22:54:39,596 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:39,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:39,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:54:39,597 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 22:54:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1891287209, now seen corresponding path program 1 times [2021-10-28 22:54:39,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:39,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939639288] [2021-10-28 22:54:39,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:39,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:39,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:39,884 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 22:54:39,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:39,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939639288] [2021-10-28 22:54:39,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939639288] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:39,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:39,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:54:39,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002531853] [2021-10-28 22:54:39,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:54:39,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:39,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:54:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:54:39,889 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 22:54:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:40,681 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-10-28 22:54:40,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:54:40,682 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 22:54:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:40,695 INFO L225 Difference]: With dead ends: 175 [2021-10-28 22:54:40,696 INFO L226 Difference]: Without dead ends: 175 [2021-10-28 22:54:40,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:54:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-28 22:54:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2021-10-28 22:54:40,744 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 22:54:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2021-10-28 22:54:40,749 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 9 [2021-10-28 22:54:40,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:40,749 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2021-10-28 22:54:40,749 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 22:54:40,749 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2021-10-28 22:54:40,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:54:40,750 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:40,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:40,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:54:40,751 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 22:54:40,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:40,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1499638660, now seen corresponding path program 1 times [2021-10-28 22:54:40,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:40,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291612448] [2021-10-28 22:54:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:40,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:41,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:41,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:41,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291612448] [2021-10-28 22:54:41,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291612448] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:41,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:41,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:54:41,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421887250] [2021-10-28 22:54:41,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:54:41,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:41,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:54:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:54:41,253 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 22:54:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:42,331 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-10-28 22:54:42,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:54:42,332 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 22:54:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:42,336 INFO L225 Difference]: With dead ends: 262 [2021-10-28 22:54:42,336 INFO L226 Difference]: Without dead ends: 262 [2021-10-28 22:54:42,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:54:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-28 22:54:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-10-28 22:54:42,361 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 22:54:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2021-10-28 22:54:42,366 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 10 [2021-10-28 22:54:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:42,367 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2021-10-28 22:54:42,367 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 22:54:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2021-10-28 22:54:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 22:54:42,368 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:42,368 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:42,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:54:42,369 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 22:54:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash -755841706, now seen corresponding path program 1 times [2021-10-28 22:54:42,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:42,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593677070] [2021-10-28 22:54:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:42,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:42,761 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 22:54:42,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:42,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593677070] [2021-10-28 22:54:42,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593677070] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:42,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:42,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:54:42,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146286985] [2021-10-28 22:54:42,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:54:42,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:42,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:54:42,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:54:42,765 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 22:54:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:43,882 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2021-10-28 22:54:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:54:43,883 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 22:54:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:43,886 INFO L225 Difference]: With dead ends: 236 [2021-10-28 22:54:43,887 INFO L226 Difference]: Without dead ends: 236 [2021-10-28 22:54:43,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:54:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-28 22:54:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 202. [2021-10-28 22:54:43,912 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 22:54:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-10-28 22:54:43,916 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 11 [2021-10-28 22:54:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:43,917 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-10-28 22:54:43,917 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 22:54:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-10-28 22:54:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 22:54:43,918 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:43,918 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:43,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:54:43,919 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 22:54:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:43,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1956256314, now seen corresponding path program 1 times [2021-10-28 22:54:43,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:43,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597285393] [2021-10-28 22:54:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:43,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:44,083 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 22:54:44,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:44,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597285393] [2021-10-28 22:54:44,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597285393] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:44,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:44,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:54:44,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275764381] [2021-10-28 22:54:44,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:54:44,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:44,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:54:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:54:44,087 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 22:54:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:45,075 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2021-10-28 22:54:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:54:45,078 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 22:54:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:45,082 INFO L225 Difference]: With dead ends: 287 [2021-10-28 22:54:45,082 INFO L226 Difference]: Without dead ends: 287 [2021-10-28 22:54:45,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:54:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-28 22:54:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 233. [2021-10-28 22:54:45,125 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 22:54:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2021-10-28 22:54:45,133 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 12 [2021-10-28 22:54:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:45,134 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2021-10-28 22:54:45,134 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 22:54:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2021-10-28 22:54:45,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:54:45,135 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:45,135 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:45,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:54:45,136 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 22:54:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -514403496, now seen corresponding path program 1 times [2021-10-28 22:54:45,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:45,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675852958] [2021-10-28 22:54:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:45,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:45,452 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 22:54:45,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:45,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675852958] [2021-10-28 22:54:45,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675852958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:45,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:45,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:54:45,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512843987] [2021-10-28 22:54:45,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:54:45,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:45,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:54:45,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:54:45,456 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 22:54:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:46,377 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2021-10-28 22:54:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:54:46,378 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 22:54:46,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:46,381 INFO L225 Difference]: With dead ends: 265 [2021-10-28 22:54:46,381 INFO L226 Difference]: Without dead ends: 265 [2021-10-28 22:54:46,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:54:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-28 22:54:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2021-10-28 22:54:46,396 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 22:54:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2021-10-28 22:54:46,400 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 13 [2021-10-28 22:54:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:46,400 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2021-10-28 22:54:46,400 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 22:54:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2021-10-28 22:54:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 22:54:46,401 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:46,401 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:46,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 22:54:46,402 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 22:54:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash -389968098, now seen corresponding path program 1 times [2021-10-28 22:54:46,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:46,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118933463] [2021-10-28 22:54:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:46,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:46,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:46,596 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 22:54:46,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:46,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118933463] [2021-10-28 22:54:46,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118933463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:46,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157438236] [2021-10-28 22:54:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:46,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:46,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:46,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:54:46,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 22:54:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:46,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 22:54:46,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:47,030 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 22:54:47,031 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 22:54:47,480 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 22:54:47,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157438236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:47,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:54:47,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-28 22:54:47,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793572371] [2021-10-28 22:54:47,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:54:47,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:54:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:54:47,484 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 22:54:48,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:48,477 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2021-10-28 22:54:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:54:48,478 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 22:54:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:48,481 INFO L225 Difference]: With dead ends: 267 [2021-10-28 22:54:48,481 INFO L226 Difference]: Without dead ends: 267 [2021-10-28 22:54:48,482 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:48,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-28 22:54:48,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2021-10-28 22:54:48,498 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 22:54:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2021-10-28 22:54:48,503 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 17 [2021-10-28 22:54:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:48,504 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2021-10-28 22:54:48,504 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 22:54:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2021-10-28 22:54:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:54:48,505 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:48,505 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:48,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:48,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:48,721 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 22:54:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash 795890845, now seen corresponding path program 1 times [2021-10-28 22:54:48,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:48,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355601396] [2021-10-28 22:54:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:48,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:49,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:54:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:49,184 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 22:54:49,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:49,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355601396] [2021-10-28 22:54:49,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355601396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:49,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428536995] [2021-10-28 22:54:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:49,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:49,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:49,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:54:49,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 22:54:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:49,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 22:54:49,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:49,656 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-28 22:54:49,657 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 22:54:58,866 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 22:54:59,370 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 22:54:59,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428536995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:59,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:54:59,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-28 22:54:59,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073837174] [2021-10-28 22:54:59,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 22:54:59,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:59,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 22:54:59,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:54:59,372 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 22:55:01,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:01,545 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2021-10-28 22:55:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 22:55:01,546 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 22:55:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:01,548 INFO L225 Difference]: With dead ends: 294 [2021-10-28 22:55:01,548 INFO L226 Difference]: Without dead ends: 294 [2021-10-28 22:55:01,549 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 22:55:01,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-28 22:55:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2021-10-28 22:55:01,559 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 22:55:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2021-10-28 22:55:01,561 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 18 [2021-10-28 22:55:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:01,562 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2021-10-28 22:55:01,562 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 22:55:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2021-10-28 22:55:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:55:01,563 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:01,563 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:01,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:55:01,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:55:01,785 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 22:55:01,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:01,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1097187491, now seen corresponding path program 1 times [2021-10-28 22:55:01,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:01,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582918426] [2021-10-28 22:55:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:01,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:55:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:02,232 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 22:55:02,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:02,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582918426] [2021-10-28 22:55:02,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582918426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:55:02,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55729417] [2021-10-28 22:55:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:02,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:55:02,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:55:02,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:55:02,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 22:55:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:02,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 22:55:02,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:02,655 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-28 22:55:02,656 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 22:55:02,671 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 22:55:05,513 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 22:55:05,517 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 22:55:06,127 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 22:55:06,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55729417] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:55:06,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:55:06,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-28 22:55:06,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000200285] [2021-10-28 22:55:06,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 22:55:06,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 22:55:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:55:06,129 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 22:55:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:07,496 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2021-10-28 22:55:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:55:07,497 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 22:55:07,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:07,499 INFO L225 Difference]: With dead ends: 272 [2021-10-28 22:55:07,500 INFO L226 Difference]: Without dead ends: 272 [2021-10-28 22:55:07,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:55:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-28 22:55:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-10-28 22:55:07,511 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 22:55:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2021-10-28 22:55:07,514 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 19 [2021-10-28 22:55:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:07,515 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2021-10-28 22:55:07,515 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 22:55:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2021-10-28 22:55:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 22:55:07,516 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:07,516 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 22:55:07,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:55:07,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 22:55:07,737 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 22:55:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash -321978897, now seen corresponding path program 1 times [2021-10-28 22:55:07,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:07,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595638522] [2021-10-28 22:55:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:07,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:55:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:07,819 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 22:55:07,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:07,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595638522] [2021-10-28 22:55:07,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595638522] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:07,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:07,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:55:07,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077607800] [2021-10-28 22:55:07,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:55:07,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:55:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:55:07,821 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 22:55:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:08,154 INFO L93 Difference]: Finished difference Result 352 states and 523 transitions. [2021-10-28 22:55:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:55:08,154 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 22:55:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:08,159 INFO L225 Difference]: With dead ends: 352 [2021-10-28 22:55:08,159 INFO L226 Difference]: Without dead ends: 352 [2021-10-28 22:55:08,160 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 22:55:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-28 22:55:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 338. [2021-10-28 22:55:08,179 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 22:55:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 521 transitions. [2021-10-28 22:55:08,184 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 521 transitions. Word has length 23 [2021-10-28 22:55:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:08,185 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 521 transitions. [2021-10-28 22:55:08,185 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 22:55:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 521 transitions. [2021-10-28 22:55:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 22:55:08,189 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:08,189 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 22:55:08,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 22:55:08,192 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 22:55:08,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:08,193 INFO L85 PathProgramCache]: Analyzing trace with hash -321978673, now seen corresponding path program 1 times [2021-10-28 22:55:08,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:08,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554696920] [2021-10-28 22:55:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:08,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:55:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:08,299 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 22:55:08,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:08,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554696920] [2021-10-28 22:55:08,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554696920] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:08,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:08,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:55:08,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394236295] [2021-10-28 22:55:08,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:55:08,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:55:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:55:08,302 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 22:55:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:08,618 INFO L93 Difference]: Finished difference Result 391 states and 559 transitions. [2021-10-28 22:55:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:55:08,619 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 22:55:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:08,622 INFO L225 Difference]: With dead ends: 391 [2021-10-28 22:55:08,623 INFO L226 Difference]: Without dead ends: 391 [2021-10-28 22:55:08,623 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 22:55:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-28 22:55:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2021-10-28 22:55:08,637 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 22:55:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 553 transitions. [2021-10-28 22:55:08,640 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 553 transitions. Word has length 23 [2021-10-28 22:55:08,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:08,641 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 553 transitions. [2021-10-28 22:55:08,641 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 22:55:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 553 transitions. [2021-10-28 22:55:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 22:55:08,647 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:08,647 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 22:55:08,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 22:55:08,647 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 22:55:08,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411157, now seen corresponding path program 1 times [2021-10-28 22:55:08,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:08,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952980351] [2021-10-28 22:55:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:08,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:55:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:08,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:08,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952980351] [2021-10-28 22:55:08,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952980351] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:08,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:08,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:55:08,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973930405] [2021-10-28 22:55:08,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:55:08,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:08,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:55:08,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:55:08,765 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 22:55:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:09,135 INFO L93 Difference]: Finished difference Result 390 states and 557 transitions. [2021-10-28 22:55:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:55:09,136 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 22:55:09,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:09,140 INFO L225 Difference]: With dead ends: 390 [2021-10-28 22:55:09,140 INFO L226 Difference]: Without dead ends: 390 [2021-10-28 22:55:09,140 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 22:55:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-28 22:55:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-10-28 22:55:09,155 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 22:55:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2021-10-28 22:55:09,158 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 24 [2021-10-28 22:55:09,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:09,159 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2021-10-28 22:55:09,159 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 22:55:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2021-10-28 22:55:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 22:55:09,167 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:09,167 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 22:55:09,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 22:55:09,168 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 22:55:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1350782223, now seen corresponding path program 1 times [2021-10-28 22:55:09,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:09,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700045479] [2021-10-28 22:55:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:09,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:55:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 22:55:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 22:55:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 22:55:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:09,283 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 22:55:09,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:09,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700045479] [2021-10-28 22:55:09,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700045479] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:09,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:09,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:55:09,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406471256] [2021-10-28 22:55:09,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:55:09,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:55:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:55:09,290 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 22:55:09,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:09,515 INFO L93 Difference]: Finished difference Result 284 states and 399 transitions. [2021-10-28 22:55:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:55:09,516 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 22:55:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:09,517 INFO L225 Difference]: With dead ends: 284 [2021-10-28 22:55:09,518 INFO L226 Difference]: Without dead ends: 284 [2021-10-28 22:55:09,518 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 22:55:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-28 22:55:09,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-28 22:55:09,527 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 22:55:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2021-10-28 22:55:09,530 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 33 [2021-10-28 22:55:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:09,530 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2021-10-28 22:55:09,530 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 22:55:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2021-10-28 22:55:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 22:55:09,533 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:09,533 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 22:55:09,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 22:55:09,533 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 22:55:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:09,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1784623764, now seen corresponding path program 1 times [2021-10-28 22:55:09,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:09,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370954398] [2021-10-28 22:55:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:09,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:55:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 22:55:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:09,719 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 22:55:09,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:09,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370954398] [2021-10-28 22:55:09,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370954398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:55:09,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764596466] [2021-10-28 22:55:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:09,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:55:09,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:55:09,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:55:09,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 22:55:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:10,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 22:55:10,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:10,174 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-28 22:55:10,174 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 22:55:11,789 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-28 22:55:11,790 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 22:55:14,561 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 22:55:14,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764596466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:55:14,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:55:14,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 22:55:14,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694975755] [2021-10-28 22:55:14,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:55:14,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:55:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:55:14,563 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 22:55:26,231 WARN L207 SmtUtils]: Spent 10.22 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-28 22:55:44,098 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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 22:55:44,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-28 22:55:44,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-28 22:55:44,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:55:44,299 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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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 22:55:44,302 INFO L168 Benchmark]: Toolchain (without parser) took 67743.24 ms. Allocated memory was 88.1 MB in the beginning and 232.8 MB in the end (delta: 144.7 MB). Free memory was 50.4 MB in the beginning and 112.6 MB in the end (delta: -62.2 MB). Peak memory consumption was 80.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:44,303 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:55:44,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.91 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 76.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:44,303 INFO L168 Benchmark]: Boogie Preprocessor took 153.44 ms. Allocated memory is still 109.1 MB. Free memory was 76.2 MB in the beginning and 73.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:44,304 INFO L168 Benchmark]: RCFGBuilder took 906.87 ms. Allocated memory is still 109.1 MB. Free memory was 73.0 MB in the beginning and 46.9 MB in the end (delta: 26.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:44,304 INFO L168 Benchmark]: TraceAbstraction took 66026.52 ms. Allocated memory was 109.1 MB in the beginning and 232.8 MB in the end (delta: 123.7 MB). Free memory was 46.7 MB in the beginning and 112.6 MB in the end (delta: -65.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:44,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 643.91 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 76.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 153.44 ms. Allocated memory is still 109.1 MB. Free memory was 76.2 MB in the beginning and 73.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 906.87 ms. Allocated memory is still 109.1 MB. Free memory was 73.0 MB in the beginning and 46.9 MB in the end (delta: 26.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 66026.52 ms. Allocated memory was 109.1 MB in the beginning and 232.8 MB in the end (delta: 123.7 MB). Free memory was 46.7 MB in the beginning and 112.6 MB in the end (delta: -65.9 MB). Peak memory consumption was 59.9 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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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 22:55:46,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:55:46,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:55:46,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:55:46,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:55:46,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:55:46,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:55:46,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:55:46,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:55:46,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:55:46,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:55:46,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:55:46,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:55:46,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:55:46,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:55:46,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:55:46,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:55:46,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:55:46,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:55:46,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:55:46,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:55:46,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:55:46,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:55:46,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:55:46,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:55:46,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:55:46,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:55:46,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:55:46,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:55:46,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:55:46,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:55:46,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:55:46,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:55:46,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:55:46,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:55:46,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:55:46,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:55:46,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:55:46,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:55:46,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:55:46,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:55:46,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-10-28 22:55:46,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:55:46,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:55:46,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:55:46,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:55:46,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:55:46,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:55:46,778 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:55:46,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:55:46,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:55:46,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:55:46,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:55:46,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:55:46,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:55:46,781 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:55:46,781 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:55:46,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:55:46,782 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:55:46,782 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 22:55:46,783 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 22:55:46,783 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:55:46,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:55:46,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:55:46,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:55:46,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:55:46,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:55:46,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:55:46,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:55:46,786 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 22:55:46,786 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 22:55:46,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:55:46,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 22:55:46,787 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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-28 22:55:47,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:55:47,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:55:47,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:55:47,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:55:47,194 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:55:47,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 22:55:47,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data/8ea9ccadd/6e9e65e8e7564459b978294a8e239fde/FLAGfb69c0aaf [2021-10-28 22:55:47,955 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:55:47,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 22:55:47,980 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data/8ea9ccadd/6e9e65e8e7564459b978294a8e239fde/FLAGfb69c0aaf [2021-10-28 22:55:48,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/data/8ea9ccadd/6e9e65e8e7564459b978294a8e239fde [2021-10-28 22:55:48,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:55:48,138 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:55:48,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:55:48,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:55:48,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:55:48,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:48,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fa4213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48, skipping insertion in model container [2021-10-28 22:55:48,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:48,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:55:48,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:55:48,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:55:48,791 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:55:48,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:55:48,930 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:55:48,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48 WrapperNode [2021-10-28 22:55:48,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:55:48,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:55:48,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:55:48,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:55:48,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:48,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:48,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:48,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:49,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:49,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:49,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:49,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:55:49,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:55:49,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:55:49,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:55:49,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (1/1) ... [2021-10-28 22:55:49,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:55:49,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:55:49,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:55:49,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:55:49,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 22:55:49,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:55:49,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 22:55:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 22:55:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 22:55:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 22:55:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 22:55:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 22:55:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 22:55:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 22:55:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 22:55:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 22:55:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 22:55:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 22:55:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 22:55:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 22:55:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 22:55:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 22:55:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 22:55:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 22:55:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 22:55:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 22:55:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 22:55:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 22:55:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 22:55:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 22:55:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 22:55:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 22:55:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 22:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 22:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 22:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 22:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 22:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 22:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 22:55:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 22:55:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 22:55:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 22:55:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 22:55:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 22:55:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 22:55:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 22:55:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 22:55:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 22:55:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 22:55:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 22:55:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 22:55:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 22:55:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 22:55:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 22:55:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 22:55:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 22:55:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 22:55:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 22:55:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 22:55:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 22:55:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 22:55:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 22:55:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 22:55:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 22:55:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 22:55:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 22:55:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 22:55:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 22:55:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 22:55:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 22:55:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 22:55:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 22:55:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 22:55:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 22:55:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 22:55:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 22:55:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 22:55:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 22:55:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 22:55:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 22:55:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 22:55:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 22:55:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 22:55:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 22:55:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 22:55:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 22:55:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 22:55:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 22:55:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 22:55:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 22:55:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 22:55:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 22:55:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 22:55:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 22:55:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 22:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 22:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 22:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 22:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 22:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 22:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 22:55:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 22:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 22:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 22:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 22:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 22:55:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 22:55:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 22:55:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 22:55:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 22:55:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 22:55:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 22:55:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 22:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 22:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 22:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 22:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 22:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 22:55:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 22:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 22:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 22:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 22:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 22:55:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 22:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 22:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 22:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 22:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 22:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 22:55:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 22:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 22:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 22:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 22:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 22:55:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 22:55:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 22:55:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 22:55:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 22:55:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 22:55:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 22:55:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 22:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 22:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 22:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 22:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 22:55:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 22:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 22:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 22:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 22:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 22:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 22:55:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 22:55:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 22:55:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 22:55:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 22:55:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 22:55:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 22:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 22:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 22:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 22:55:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 22:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 22:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 22:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 22:55:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 22:55:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 22:55:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 22:55:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:55:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 22:55:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 22:55:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 22:55:50,059 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:55:50,059 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 22:55:50,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:55:50 BoogieIcfgContainer [2021-10-28 22:55:50,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:55:50,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:55:50,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:55:50,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:55:50,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:55:48" (1/3) ... [2021-10-28 22:55:50,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee65c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:55:50, skipping insertion in model container [2021-10-28 22:55:50,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:48" (2/3) ... [2021-10-28 22:55:50,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee65c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:55:50, skipping insertion in model container [2021-10-28 22:55:50,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:55:50" (3/3) ... [2021-10-28 22:55:50,073 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-28 22:55:50,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:55:50,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 22:55:50,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:55:50,148 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 22:55:50,148 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 22:55:50,167 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 22:55:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 22:55:50,187 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:50,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:50,189 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 22:55:50,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash -317410196, now seen corresponding path program 1 times [2021-10-28 22:55:50,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:55:50,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736858202] [2021-10-28 22:55:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:50,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:55:50,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:55:50,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:55:50,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 22:55:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:50,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:55:50,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:50,903 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 22:55:50,904 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 22:55:51,910 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 22:55:51,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:55:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:51,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:55:51,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736858202] [2021-10-28 22:55:51,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736858202] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:51,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:51,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 22:55:51,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450286221] [2021-10-28 22:55:51,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:55:51,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:55:52,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:55:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:55:52,015 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 22:55:52,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:52,187 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-10-28 22:55:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:55:52,189 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 22:55:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:52,199 INFO L225 Difference]: With dead ends: 97 [2021-10-28 22:55:52,199 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 22:55:52,201 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 22:55:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 22:55:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-10-28 22:55:52,245 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 22:55:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-10-28 22:55:52,250 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 9 [2021-10-28 22:55:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:52,251 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-10-28 22:55:52,251 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 22:55:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-10-28 22:55:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 22:55:52,252 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:52,253 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:52,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:55:52,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:55:52,466 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 22:55:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:52,467 INFO L85 PathProgramCache]: Analyzing trace with hash -317410195, now seen corresponding path program 1 times [2021-10-28 22:55:52,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:55:52,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694855755] [2021-10-28 22:55:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:52,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:55:52,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:55:52,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:55:52,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 22:55:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:52,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 22:55:52,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:52,913 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 22:55:52,914 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 22:55:53,064 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 22:55:53,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:55:53,419 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 22:55:53,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:55:53,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694855755] [2021-10-28 22:55:53,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694855755] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:53,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:53,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 22:55:53,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462206472] [2021-10-28 22:55:53,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:55:53,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:55:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:55:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:55:53,423 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 22:55:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:54,059 INFO L93 Difference]: Finished difference Result 174 states and 228 transitions. [2021-10-28 22:55:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:55:54,060 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 22:55:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:54,063 INFO L225 Difference]: With dead ends: 174 [2021-10-28 22:55:54,063 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 22:55:54,064 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 22:55:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 22:55:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-28 22:55:54,095 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 22:55:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2021-10-28 22:55:54,107 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 9 [2021-10-28 22:55:54,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:54,108 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2021-10-28 22:55:54,108 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 22:55:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2021-10-28 22:55:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:55:54,109 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:54,109 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:54,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:55:54,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:55:54,322 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 22:55:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:54,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1249781436, now seen corresponding path program 1 times [2021-10-28 22:55:54,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:55:54,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840315986] [2021-10-28 22:55:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:54,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:55:54,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:55:54,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:55:54,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 22:55:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:54,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 22:55:54,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:54,895 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-28 22:55:54,896 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 22:56:01,030 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-10-28 22:56:01,031 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 22:56:10,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 105 [2021-10-28 22:56:12,060 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 22:56:12,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:56:12,447 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 22:56:12,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:56:12,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840315986] [2021-10-28 22:56:12,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840315986] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:12,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:12,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 22:56:12,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735799334] [2021-10-28 22:56:12,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:56:12,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:56:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:56:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:56:12,451 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 22:56:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:14,444 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2021-10-28 22:56:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:56:14,448 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 22:56:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:14,452 INFO L225 Difference]: With dead ends: 261 [2021-10-28 22:56:14,452 INFO L226 Difference]: Without dead ends: 261 [2021-10-28 22:56:14,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:56:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-28 22:56:14,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2021-10-28 22:56:14,481 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 22:56:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-10-28 22:56:14,484 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 10 [2021-10-28 22:56:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:14,484 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-10-28 22:56:14,485 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 22:56:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-10-28 22:56:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 22:56:14,486 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:14,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:14,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:14,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:56:14,693 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 22:56:14,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash -88518740, now seen corresponding path program 1 times [2021-10-28 22:56:14,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:56:14,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338461645] [2021-10-28 22:56:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:14,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:56:14,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:56:14,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:56:14,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 22:56:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:15,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 22:56:15,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:15,252 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-28 22:56:15,252 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 22:56:15,266 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 22:56:15,267 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 22:56:18,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 22:56:18,769 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 22:56:18,770 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 22:56:24,558 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 22:56:24,567 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 22:56:27,987 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 22:56:27,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:56:28,611 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 22:56:28,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:56:28,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338461645] [2021-10-28 22:56:28,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338461645] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:28,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:28,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 22:56:28,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226546783] [2021-10-28 22:56:28,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:56:28,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:56:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:56:28,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:56:28,614 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 22:56:30,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:30,735 INFO L93 Difference]: Finished difference Result 379 states and 540 transitions. [2021-10-28 22:56:30,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:56:30,736 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 22:56:30,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:30,744 INFO L225 Difference]: With dead ends: 379 [2021-10-28 22:56:30,744 INFO L226 Difference]: Without dead ends: 379 [2021-10-28 22:56:30,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:56:30,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-28 22:56:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 304. [2021-10-28 22:56:30,778 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 22:56:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 486 transitions. [2021-10-28 22:56:30,782 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 486 transitions. Word has length 11 [2021-10-28 22:56:30,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:30,783 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 486 transitions. [2021-10-28 22:56:30,783 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 22:56:30,783 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 486 transitions. [2021-10-28 22:56:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 22:56:30,784 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:30,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:30,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:31,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:56:31,006 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 22:56:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1550886470, now seen corresponding path program 1 times [2021-10-28 22:56:31,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:56:31,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873440604] [2021-10-28 22:56:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:31,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:56:31,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:56:31,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:56:31,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 22:56:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:31,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 22:56:31,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:31,509 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 22:56:31,509 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 22:56:34,239 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 22:56:34,240 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 22:56:42,825 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 22:56:42,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:56:43,072 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 22:56:43,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:56:43,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873440604] [2021-10-28 22:56:43,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873440604] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:43,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:43,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 22:56:43,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941855109] [2021-10-28 22:56:43,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:56:43,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:56:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:56:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:56:43,075 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 22:56:54,091 WARN L207 SmtUtils]: Spent 10.68 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-28 22:57:25,109 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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 22:57:25,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 22:57:25,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:57:25,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:57:25,310 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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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 22:57:25,318 INFO L168 Benchmark]: Toolchain (without parser) took 97179.37 ms. Allocated memory was 58.7 MB in the beginning and 136.3 MB in the end (delta: 77.6 MB). Free memory was 36.9 MB in the beginning and 109.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 85.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:25,318 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:57:25,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.14 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 32.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:25,319 INFO L168 Benchmark]: Boogie Preprocessor took 152.10 ms. Allocated memory is still 58.7 MB. Free memory was 31.9 MB in the beginning and 28.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:25,320 INFO L168 Benchmark]: RCFGBuilder took 977.74 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 28.3 MB in the beginning and 50.3 MB in the end (delta: -22.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:25,320 INFO L168 Benchmark]: TraceAbstraction took 95251.17 ms. Allocated memory was 75.5 MB in the beginning and 136.3 MB in the end (delta: 60.8 MB). Free memory was 50.0 MB in the beginning and 109.0 MB in the end (delta: -59.0 MB). Peak memory consumption was 81.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:25,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 58.7 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 792.14 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 32.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 152.10 ms. Allocated memory is still 58.7 MB. Free memory was 31.9 MB in the beginning and 28.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 977.74 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 28.3 MB in the beginning and 50.3 MB in the end (delta: -22.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 95251.17 ms. Allocated memory was 75.5 MB in the beginning and 136.3 MB in the end (delta: 60.8 MB). Free memory was 50.0 MB in the beginning and 109.0 MB in the end (delta: -59.0 MB). Peak memory consumption was 81.4 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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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_ce5f0d74-decc-4be1-b76f-ec8a156eeb92/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...