./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_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-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_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-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_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:57:15,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:57:15,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:57:15,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:57:15,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:57:15,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:57:15,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:57:15,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:57:15,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:57:15,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:57:15,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:57:15,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:57:15,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:57:15,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:57:15,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:57:15,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:57:15,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:57:15,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:57:15,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:57:15,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:57:15,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:57:15,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:57:15,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:57:15,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:57:15,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:57:15,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:57:15,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:57:15,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:57:15,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:57:15,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:57:15,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:57:15,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:57:15,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:57:15,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:57:15,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:57:15,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:57:15,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:57:15,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:57:15,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:57:15,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:57:15,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:57:15,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 09:57:15,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:57:15,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:57:15,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:57:15,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:57:15,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:57:15,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:57:15,156 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:57:15,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:57:15,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:57:15,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:57:15,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:57:15,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:57:15,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:57:15,158 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:57:15,158 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:57:15,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:57:15,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:57:15,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:57:15,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:57:15,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:57:15,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:57:15,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:57:15,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:57:15,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:57:15,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:57:15,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:57:15,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:57:15,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:57:15,161 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_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-28 09:57:15,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:57:15,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:57:15,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:57:15,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:57:15,432 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:57:15,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 09:57:15,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data/7f037d588/f26ee6df1a89420fb3ca864d391017db/FLAG62c8bc95b [2021-10-28 09:57:16,025 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:57:16,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 09:57:16,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data/7f037d588/f26ee6df1a89420fb3ca864d391017db/FLAG62c8bc95b [2021-10-28 09:57:16,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data/7f037d588/f26ee6df1a89420fb3ca864d391017db [2021-10-28 09:57:16,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:57:16,353 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:57:16,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:16,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:57:16,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:57:16,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:16" (1/1) ... [2021-10-28 09:57:16,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2a0e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:16, skipping insertion in model container [2021-10-28 09:57:16,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:16" (1/1) ... [2021-10-28 09:57:16,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:57:16,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:57:16,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:16,889 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:57:16,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:17,000 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:57:17,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17 WrapperNode [2021-10-28 09:57:17,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:17,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:57:17,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:57:17,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:57:17,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (1/1) ... [2021-10-28 09:57:17,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (1/1) ... [2021-10-28 09:57:17,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (1/1) ... [2021-10-28 09:57:17,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (1/1) ... [2021-10-28 09:57:17,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (1/1) ... [2021-10-28 09:57:17,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (1/1) ... [2021-10-28 09:57:17,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (1/1) ... [2021-10-28 09:57:17,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:57:17,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:57:17,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:57:17,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:57:17,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (1/1) ... [2021-10-28 09:57:17,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:57:17,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:17,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:17,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:57:17,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:57:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:57:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 09:57:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:57:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:57:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 09:57:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 09:57:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 09:57:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:57:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:57:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:57:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:57:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:57:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:57:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:57:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:57:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:57:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:57:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:57:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:57:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:57:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:57:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:57:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:57:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:57:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:57:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:57:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:57:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:57:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:57:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:57:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:57:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:57:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:57:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:57:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:57:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:57:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:57:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:57:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:57:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:57:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:57:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:57:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:57:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:57:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:57:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:57:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:57:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:57:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:57:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:57:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:57:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:57:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:57:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:57:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:57:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:57:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:57:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:57:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:57:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:57:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:57:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:57:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:57:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:57:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:57:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:57:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:57:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:57:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:57:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:57:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:57:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:57:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:57:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:57:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:57:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:57:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:57:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:57:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:57:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:57:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:57:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:57:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:57:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:57:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:57:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:57:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:57:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:57:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:57:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:57:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:57:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:57:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:57:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:57:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:57:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:57:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:57:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:57:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:57:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:57:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:57:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:57:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:57:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:57:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:57:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:57:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:57:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:57:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:57:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:57:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:57:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:57:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:57:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:57:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 09:57:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 09:57:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:57:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 09:57:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 09:57:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 09:57:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 09:57:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 09:57:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 09:57:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 09:57:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 09:57:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 09:57:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 09:57:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 09:57:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 09:57:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 09:57:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 09:57:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 09:57:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 09:57:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 09:57:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 09:57:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 09:57:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 09:57:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 09:57:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 09:57:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 09:57:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 09:57:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 09:57:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 09:57:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 09:57:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 09:57:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 09:57:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 09:57:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 09:57:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 09:57:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 09:57:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 09:57:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 09:57:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 09:57:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 09:57:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 09:57:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 09:57:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 09:57:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 09:57:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 09:57:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 09:57:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 09:57:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 09:57:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:57:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 09:57:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 09:57:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:57:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:57:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:57:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:57:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:57:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:57:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:57:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:57:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:57:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:57:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:57:17,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:57:17,809 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:57:17,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:17 BoogieIcfgContainer [2021-10-28 09:57:17,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:57:17,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:57:17,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:57:17,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:57:17,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:57:16" (1/3) ... [2021-10-28 09:57:17,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc551cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:57:17, skipping insertion in model container [2021-10-28 09:57:17,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:17" (2/3) ... [2021-10-28 09:57:17,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc551cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:57:17, skipping insertion in model container [2021-10-28 09:57:17,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:17" (3/3) ... [2021-10-28 09:57:17,822 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-28 09:57:17,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:57:17,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 09:57:17,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:57:17,892 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:57:17,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 09:57:17,909 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 09:57:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:57:17,917 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:17,917 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:17,918 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 09:57:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1891287210, now seen corresponding path program 1 times [2021-10-28 09:57:17,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:17,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982764262] [2021-10-28 09:57:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:17,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:18,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:18,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982764262] [2021-10-28 09:57:18,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982764262] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:18,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:18,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:57:18,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260269441] [2021-10-28 09:57:18,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:18,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:18,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:18,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:18,362 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 09:57:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:18,860 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-10-28 09:57:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:18,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:57:18,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:18,874 INFO L225 Difference]: With dead ends: 106 [2021-10-28 09:57:18,874 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 09:57:18,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 09:57:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2021-10-28 09:57:18,923 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 09:57:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2021-10-28 09:57:18,928 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 9 [2021-10-28 09:57:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:18,929 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2021-10-28 09:57:18,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2021-10-28 09:57:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:57:18,931 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:18,931 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:18,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:57:18,932 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 09:57:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1891287209, now seen corresponding path program 1 times [2021-10-28 09:57:18,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:18,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736144395] [2021-10-28 09:57:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:18,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:19,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:19,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736144395] [2021-10-28 09:57:19,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736144395] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:19,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:19,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:57:19,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764882646] [2021-10-28 09:57:19,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:57:19,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:57:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:19,171 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 09:57:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:19,901 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-10-28 09:57:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:57:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:57:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:19,915 INFO L225 Difference]: With dead ends: 175 [2021-10-28 09:57:19,915 INFO L226 Difference]: Without dead ends: 175 [2021-10-28 09:57:19,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:57:19,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-28 09:57:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2021-10-28 09:57:19,958 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 09:57:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2021-10-28 09:57:19,983 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 9 [2021-10-28 09:57:19,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:19,984 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2021-10-28 09:57:19,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2021-10-28 09:57:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:57:19,985 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:19,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:19,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:57:19,986 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 09:57:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:19,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1499638660, now seen corresponding path program 1 times [2021-10-28 09:57:19,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:19,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612747818] [2021-10-28 09:57:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:19,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:20,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:20,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612747818] [2021-10-28 09:57:20,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612747818] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:20,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:20,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:57:20,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850636422] [2021-10-28 09:57:20,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:57:20,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:57:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:57:20,413 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 09:57:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:21,223 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-10-28 09:57:21,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:57:21,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:57:21,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:21,237 INFO L225 Difference]: With dead ends: 262 [2021-10-28 09:57:21,237 INFO L226 Difference]: Without dead ends: 262 [2021-10-28 09:57:21,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:57:21,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-28 09:57:21,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-10-28 09:57:21,291 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 09:57:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2021-10-28 09:57:21,296 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 10 [2021-10-28 09:57:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:21,297 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2021-10-28 09:57:21,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:21,297 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2021-10-28 09:57:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:57:21,298 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:21,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:21,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:57:21,298 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 09:57:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:21,299 INFO L85 PathProgramCache]: Analyzing trace with hash -755841706, now seen corresponding path program 1 times [2021-10-28 09:57:21,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:21,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075944330] [2021-10-28 09:57:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:21,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:21,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:21,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075944330] [2021-10-28 09:57:21,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075944330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:21,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:21,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:57:21,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959581353] [2021-10-28 09:57:21,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:57:21,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:57:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:57:21,701 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 09:57:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:22,624 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2021-10-28 09:57:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:57:22,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:57:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:22,628 INFO L225 Difference]: With dead ends: 236 [2021-10-28 09:57:22,628 INFO L226 Difference]: Without dead ends: 236 [2021-10-28 09:57:22,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:57:22,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-28 09:57:22,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 202. [2021-10-28 09:57:22,649 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 09:57:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-10-28 09:57:22,652 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 11 [2021-10-28 09:57:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:22,653 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-10-28 09:57:22,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:22,653 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-10-28 09:57:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:57:22,654 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:22,654 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:22,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:57:22,655 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 09:57:22,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:22,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1956256314, now seen corresponding path program 1 times [2021-10-28 09:57:22,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:22,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573330740] [2021-10-28 09:57:22,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:22,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:22,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:22,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573330740] [2021-10-28 09:57:22,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573330740] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:22,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:22,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:57:22,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625009427] [2021-10-28 09:57:22,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:57:22,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:22,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:57:22,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:57:22,803 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 09:57:23,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:23,586 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2021-10-28 09:57:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:57:23,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:57:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:23,589 INFO L225 Difference]: With dead ends: 287 [2021-10-28 09:57:23,589 INFO L226 Difference]: Without dead ends: 287 [2021-10-28 09:57:23,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:57:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-28 09:57:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 233. [2021-10-28 09:57:23,605 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 09:57:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2021-10-28 09:57:23,624 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 12 [2021-10-28 09:57:23,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:23,625 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2021-10-28 09:57:23,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2021-10-28 09:57:23,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:57:23,626 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:23,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:23,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:57:23,627 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 09:57:23,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash -514403496, now seen corresponding path program 1 times [2021-10-28 09:57:23,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:23,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389649999] [2021-10-28 09:57:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:23,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:23,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:23,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389649999] [2021-10-28 09:57:23,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389649999] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:23,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:23,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:57:23,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170601210] [2021-10-28 09:57:23,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:57:23,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:57:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:57:23,845 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 09:57:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:24,577 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2021-10-28 09:57:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:57:24,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 09:57:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:24,580 INFO L225 Difference]: With dead ends: 265 [2021-10-28 09:57:24,580 INFO L226 Difference]: Without dead ends: 265 [2021-10-28 09:57:24,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:57:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-28 09:57:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2021-10-28 09:57:24,591 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 09:57:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2021-10-28 09:57:24,594 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 13 [2021-10-28 09:57:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:24,594 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2021-10-28 09:57:24,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2021-10-28 09:57:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:57:24,595 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:24,595 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:24,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:57:24,596 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:57:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:24,596 INFO L85 PathProgramCache]: Analyzing trace with hash -389968098, now seen corresponding path program 1 times [2021-10-28 09:57:24,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:24,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944468507] [2021-10-28 09:57:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:24,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:24,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:24,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944468507] [2021-10-28 09:57:24,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944468507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:24,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342224825] [2021-10-28 09:57:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:24,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:24,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:24,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:24,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:57:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:24,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:57:24,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:25,176 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 09:57:25,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-28 09:57:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:25,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342224825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:25,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:57:25,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-28 09:57:25,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171233696] [2021-10-28 09:57:25,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:57:25,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:25,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:57:25,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:57:25,486 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 09:57:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:26,222 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2021-10-28 09:57:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:57:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:57:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:26,225 INFO L225 Difference]: With dead ends: 267 [2021-10-28 09:57:26,225 INFO L226 Difference]: Without dead ends: 267 [2021-10-28 09:57:26,226 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:57:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-28 09:57:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2021-10-28 09:57:26,235 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 09:57:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2021-10-28 09:57:26,238 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 17 [2021-10-28 09:57:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:26,238 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2021-10-28 09:57:26,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2021-10-28 09:57:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:57:26,239 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:26,240 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:26,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:26,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 09:57:26,455 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 09:57:26,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash 795890845, now seen corresponding path program 1 times [2021-10-28 09:57:26,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:26,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397642011] [2021-10-28 09:57:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:26,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:26,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:26,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397642011] [2021-10-28 09:57:26,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397642011] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:26,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518312705] [2021-10-28 09:57:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:26,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:26,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:26,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:26,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:57:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:27,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:57:27,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:27,258 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-28 09:57:27,259 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 09:57:36,550 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 09:57:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:37,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518312705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:37,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:57:37,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-28 09:57:37,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400994567] [2021-10-28 09:57:37,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:57:37,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:57:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:57:37,113 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 09:57:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:39,335 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2021-10-28 09:57:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:57:39,336 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 09:57:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:39,338 INFO L225 Difference]: With dead ends: 294 [2021-10-28 09:57:39,338 INFO L226 Difference]: Without dead ends: 294 [2021-10-28 09:57:39,338 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 09:57:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-28 09:57:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2021-10-28 09:57:39,348 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 09:57:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2021-10-28 09:57:39,350 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 18 [2021-10-28 09:57:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:39,350 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2021-10-28 09:57:39,351 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 09:57:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2021-10-28 09:57:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:57:39,352 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:39,352 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:39,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:39,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:39,568 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 09:57:39,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1097187491, now seen corresponding path program 1 times [2021-10-28 09:57:39,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:39,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467053156] [2021-10-28 09:57:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:39,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:39,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:39,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467053156] [2021-10-28 09:57:39,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467053156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:39,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969999959] [2021-10-28 09:57:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:39,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:39,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:39,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:39,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:57:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:40,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:57:40,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:40,395 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-28 09:57:40,396 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 09:57:40,410 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 09:57:43,493 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 09:57:43,497 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 09:57:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:44,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969999959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:44,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:57:44,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-28 09:57:44,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184005290] [2021-10-28 09:57:44,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:57:44,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:57:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:57:44,053 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 09:57:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:45,471 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2021-10-28 09:57:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:57:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-28 09:57:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:45,474 INFO L225 Difference]: With dead ends: 272 [2021-10-28 09:57:45,474 INFO L226 Difference]: Without dead ends: 272 [2021-10-28 09:57:45,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:57:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-28 09:57:45,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-10-28 09:57:45,483 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 09:57:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2021-10-28 09:57:45,486 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 19 [2021-10-28 09:57:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:45,486 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2021-10-28 09:57:45,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:57:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2021-10-28 09:57:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:57:45,487 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:45,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:45,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:45,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 09:57:45,704 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 09:57:45,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash -321978897, now seen corresponding path program 1 times [2021-10-28 09:57:45,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:45,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463568806] [2021-10-28 09:57:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:45,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:45,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:45,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463568806] [2021-10-28 09:57:45,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463568806] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:45,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:45,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:57:45,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954754881] [2021-10-28 09:57:45,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:45,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:45,790 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 09:57:46,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:46,116 INFO L93 Difference]: Finished difference Result 352 states and 523 transitions. [2021-10-28 09:57:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:46,117 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 09:57:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:46,122 INFO L225 Difference]: With dead ends: 352 [2021-10-28 09:57:46,122 INFO L226 Difference]: Without dead ends: 352 [2021-10-28 09:57:46,125 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 09:57:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-28 09:57:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 338. [2021-10-28 09:57:46,150 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 09:57:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 521 transitions. [2021-10-28 09:57:46,155 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 521 transitions. Word has length 23 [2021-10-28 09:57:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:46,156 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 521 transitions. [2021-10-28 09:57:46,156 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 09:57:46,156 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 521 transitions. [2021-10-28 09:57:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:57:46,159 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:46,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:46,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:57:46,160 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 09:57:46,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash -321978673, now seen corresponding path program 1 times [2021-10-28 09:57:46,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:46,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001809741] [2021-10-28 09:57:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:46,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:46,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:46,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:46,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001809741] [2021-10-28 09:57:46,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001809741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:46,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:46,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:57:46,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485547237] [2021-10-28 09:57:46,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:46,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:46,284 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 09:57:46,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:46,621 INFO L93 Difference]: Finished difference Result 391 states and 559 transitions. [2021-10-28 09:57:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:46,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 09:57:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:46,625 INFO L225 Difference]: With dead ends: 391 [2021-10-28 09:57:46,625 INFO L226 Difference]: Without dead ends: 391 [2021-10-28 09:57:46,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-28 09:57:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2021-10-28 09:57:46,638 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 09:57:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 553 transitions. [2021-10-28 09:57:46,641 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 553 transitions. Word has length 23 [2021-10-28 09:57:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:46,641 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 553 transitions. [2021-10-28 09:57:46,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 553 transitions. [2021-10-28 09:57:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:57:46,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:46,643 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 09:57:46,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:57:46,643 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 09:57:46,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411157, now seen corresponding path program 1 times [2021-10-28 09:57:46,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:46,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051937789] [2021-10-28 09:57:46,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:46,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:46,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:46,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051937789] [2021-10-28 09:57:46,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051937789] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:46,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:46,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:57:46,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124449092] [2021-10-28 09:57:46,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:46,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:46,736 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 09:57:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:47,029 INFO L93 Difference]: Finished difference Result 390 states and 557 transitions. [2021-10-28 09:57:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:47,030 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 09:57:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:47,033 INFO L225 Difference]: With dead ends: 390 [2021-10-28 09:57:47,033 INFO L226 Difference]: Without dead ends: 390 [2021-10-28 09:57:47,033 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 09:57:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-28 09:57:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-10-28 09:57:47,051 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 09:57:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2021-10-28 09:57:47,054 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 24 [2021-10-28 09:57:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:47,055 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2021-10-28 09:57:47,055 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 09:57:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2021-10-28 09:57:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:57:47,060 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:47,061 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:47,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:57:47,061 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 09:57:47,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1350782223, now seen corresponding path program 1 times [2021-10-28 09:57:47,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:47,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438924735] [2021-10-28 09:57:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:47,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:57:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 09:57:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:57:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:47,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:47,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438924735] [2021-10-28 09:57:47,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438924735] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:47,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:47,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:57:47,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485815578] [2021-10-28 09:57:47,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:57:47,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:57:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:47,206 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 09:57:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:47,418 INFO L93 Difference]: Finished difference Result 284 states and 399 transitions. [2021-10-28 09:57:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:57:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2021-10-28 09:57:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:47,421 INFO L225 Difference]: With dead ends: 284 [2021-10-28 09:57:47,421 INFO L226 Difference]: Without dead ends: 284 [2021-10-28 09:57:47,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-28 09:57:47,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-28 09:57:47,430 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 09:57:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2021-10-28 09:57:47,433 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 33 [2021-10-28 09:57:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:47,433 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2021-10-28 09:57:47,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:57:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2021-10-28 09:57:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:57:47,440 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:47,440 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:47,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:57:47,440 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 09:57:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1784623764, now seen corresponding path program 1 times [2021-10-28 09:57:47,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:47,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869291953] [2021-10-28 09:57:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:47,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:57:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:57:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:57:47,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:47,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869291953] [2021-10-28 09:57:47,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869291953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:47,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040138494] [2021-10-28 09:57:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:47,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:47,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:47,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:47,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:57:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:47,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:57:47,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:48,134 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-28 09:57:48,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-28 09:57:49,806 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-28 09:57:49,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 55 treesize of output 89 [2021-10-28 09:57:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:57:52,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040138494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:52,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:57:52,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 09:57:52,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422340697] [2021-10-28 09:57:52,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:57:52,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:57:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:57:52,455 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 09:58:04,592 WARN L207 SmtUtils]: Spent 10.51 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-28 09:58:22,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 09:58:22,257 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:58:22,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:22,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:58:22,458 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_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 09:58:22,461 INFO L168 Benchmark]: Toolchain (without parser) took 66107.66 ms. Allocated memory was 107.0 MB in the beginning and 262.1 MB in the end (delta: 155.2 MB). Free memory was 74.0 MB in the beginning and 130.3 MB in the end (delta: -56.3 MB). Peak memory consumption was 99.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:22,462 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:58:22,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.26 ms. Allocated memory is still 107.0 MB. Free memory was 73.8 MB in the beginning and 73.2 MB in the end (delta: 572.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:22,462 INFO L168 Benchmark]: Boogie Preprocessor took 79.93 ms. Allocated memory is still 107.0 MB. Free memory was 73.2 MB in the beginning and 69.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:22,463 INFO L168 Benchmark]: RCFGBuilder took 728.86 ms. Allocated memory was 107.0 MB in the beginning and 146.8 MB in the end (delta: 39.8 MB). Free memory was 69.9 MB in the beginning and 114.7 MB in the end (delta: -44.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:22,463 INFO L168 Benchmark]: TraceAbstraction took 64647.46 ms. Allocated memory was 146.8 MB in the beginning and 262.1 MB in the end (delta: 115.3 MB). Free memory was 114.1 MB in the beginning and 130.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:22,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 646.26 ms. Allocated memory is still 107.0 MB. Free memory was 73.8 MB in the beginning and 73.2 MB in the end (delta: 572.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.93 ms. Allocated memory is still 107.0 MB. Free memory was 73.2 MB in the beginning and 69.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 728.86 ms. Allocated memory was 107.0 MB in the beginning and 146.8 MB in the end (delta: 39.8 MB). Free memory was 69.9 MB in the beginning and 114.7 MB in the end (delta: -44.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 64647.46 ms. Allocated memory was 146.8 MB in the beginning and 262.1 MB in the end (delta: 115.3 MB). Free memory was 114.1 MB in the beginning and 130.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:58:24,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:58:24,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:58:24,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:58:24,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:58:24,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:58:24,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:58:24,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:58:24,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:58:24,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:58:24,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:58:24,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:58:24,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:58:24,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:58:24,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:58:24,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:58:24,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:58:24,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:58:24,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:58:24,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:58:24,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:58:24,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:58:24,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:58:24,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:58:24,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:58:24,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:58:24,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:58:24,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:58:24,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:58:24,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:58:24,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:58:24,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:58:24,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:58:24,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:58:24,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:58:24,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:58:24,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:58:24,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:58:24,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:58:24,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:58:24,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:58:24,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-10-28 09:58:24,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:58:24,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:58:24,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:58:24,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:58:24,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:58:24,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:58:24,915 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:58:24,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:58:24,915 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:58:24,916 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:58:24,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:58:24,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:58:24,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:58:24,917 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:58:24,918 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:58:24,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:58:24,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:58:24,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:58:24,919 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:58:24,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:58:24,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:58:24,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:58:24,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:58:24,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:58:24,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:24,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:58:24,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:58:24,921 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:58:24,921 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:58:24,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:58:24,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:58:24,922 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_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-28 09:58:25,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:58:25,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:58:25,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:58:25,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:58:25,381 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:58:25,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 09:58:25,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data/b70888d16/896c0051848c49b0bfd5b918f66ba704/FLAG42c3c9b08 [2021-10-28 09:58:26,091 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:58:26,091 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 09:58:26,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data/b70888d16/896c0051848c49b0bfd5b918f66ba704/FLAG42c3c9b08 [2021-10-28 09:58:26,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/data/b70888d16/896c0051848c49b0bfd5b918f66ba704 [2021-10-28 09:58:26,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:58:26,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:58:26,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:26,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:58:26,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:58:26,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:26" (1/1) ... [2021-10-28 09:58:26,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aca9818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:26, skipping insertion in model container [2021-10-28 09:58:26,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:26" (1/1) ... [2021-10-28 09:58:26,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:58:26,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:58:26,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:26,925 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:58:26,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:27,022 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:58:27,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27 WrapperNode [2021-10-28 09:58:27,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:27,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:58:27,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:58:27,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:58:27,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (1/1) ... [2021-10-28 09:58:27,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (1/1) ... [2021-10-28 09:58:27,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (1/1) ... [2021-10-28 09:58:27,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (1/1) ... [2021-10-28 09:58:27,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (1/1) ... [2021-10-28 09:58:27,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (1/1) ... [2021-10-28 09:58:27,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (1/1) ... [2021-10-28 09:58:27,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:58:27,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:58:27,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:58:27,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:58:27,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (1/1) ... [2021-10-28 09:58:27,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:27,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:58:27,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:58:27,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:58:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:58:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:58:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 09:58:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:58:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:58:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:58:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 09:58:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 09:58:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 09:58:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:58:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:58:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:58:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:58:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:58:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:58:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:58:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:58:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:58:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:58:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:58:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:58:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:58:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:58:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:58:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:58:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:58:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:58:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:58:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:58:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:58:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:58:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:58:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:58:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:58:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:58:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:58:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:58:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:58:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:58:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:58:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:58:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:58:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:58:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:58:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:58:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:58:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:58:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:58:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:58:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:58:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:58:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:58:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:58:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:58:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:58:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:58:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:58:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:58:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:58:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:58:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:58:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:58:27,219 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:58:27,219 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:58:27,219 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:58:27,219 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:58:27,219 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:58:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:58:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:58:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:58:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:58:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:58:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:58:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:58:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:58:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:58:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:58:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:58:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:58:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:58:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:58:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:58:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:58:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:58:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:58:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:58:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:58:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:58:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:58:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:58:27,224 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:58:27,224 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:58:27,224 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:58:27,224 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:58:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:58:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:58:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:58:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:58:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:58:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:58:27,226 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:58:27,226 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:58:27,226 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:58:27,226 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:58:27,226 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:58:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:58:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:58:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:58:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:58:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:58:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:58:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:58:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:58:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:58:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:58:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:58:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 09:58:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 09:58:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:58:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 09:58:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 09:58:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 09:58:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 09:58:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 09:58:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 09:58:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 09:58:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 09:58:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 09:58:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 09:58:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 09:58:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 09:58:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 09:58:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 09:58:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 09:58:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 09:58:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 09:58:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 09:58:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 09:58:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 09:58:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 09:58:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 09:58:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 09:58:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 09:58:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 09:58:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 09:58:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 09:58:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 09:58:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 09:58:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 09:58:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 09:58:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 09:58:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 09:58:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 09:58:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 09:58:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 09:58:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 09:58:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 09:58:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 09:58:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 09:58:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 09:58:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 09:58:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 09:58:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 09:58:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 09:58:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:58:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 09:58:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 09:58:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:58:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:58:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:58:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:58:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:58:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:58:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:58:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:58:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:58:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:58:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:58:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:58:27,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:58:27,905 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:58:27,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:27 BoogieIcfgContainer [2021-10-28 09:58:27,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:58:27,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:58:27,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:58:27,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:58:27,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:58:26" (1/3) ... [2021-10-28 09:58:27,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b0b61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:27, skipping insertion in model container [2021-10-28 09:58:27,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:27" (2/3) ... [2021-10-28 09:58:27,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b0b61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:27, skipping insertion in model container [2021-10-28 09:58:27,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:27" (3/3) ... [2021-10-28 09:58:27,916 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-28 09:58:27,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:58:27,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 09:58:27,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:58:27,973 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:58:27,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 09:58:27,989 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 09:58:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:58:27,997 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:27,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:27,998 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 09:58:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash -317410196, now seen corresponding path program 1 times [2021-10-28 09:58:28,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:28,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723346472] [2021-10-28 09:58:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:28,018 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:28,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:28,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:58:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:28,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:58:28,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:28,710 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 09:58:28,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 69 [2021-10-28 09:58:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:29,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:29,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:29,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723346472] [2021-10-28 09:58:29,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723346472] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:29,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:29,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:58:29,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145339386] [2021-10-28 09:58:29,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:29,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:29,601 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 09:58:29,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:29,765 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-10-28 09:58:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:29,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:58:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:29,784 INFO L225 Difference]: With dead ends: 97 [2021-10-28 09:58:29,784 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 09:58:29,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 09:58:29,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-10-28 09:58:29,839 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 09:58:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-10-28 09:58:29,843 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 9 [2021-10-28 09:58:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:29,844 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-10-28 09:58:29,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:58:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-10-28 09:58:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:58:29,846 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:29,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:29,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:30,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:30,059 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 09:58:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:30,060 INFO L85 PathProgramCache]: Analyzing trace with hash -317410195, now seen corresponding path program 1 times [2021-10-28 09:58:30,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:30,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809504316] [2021-10-28 09:58:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:30,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:30,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:30,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:30,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:58:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:30,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:58:30,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:30,508 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 09:58:30,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-28 09:58:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:30,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:31,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:31,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809504316] [2021-10-28 09:58:31,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809504316] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:31,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:31,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 09:58:31,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710385161] [2021-10-28 09:58:31,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:58:31,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:31,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:58:31,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:31,019 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 09:58:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:31,661 INFO L93 Difference]: Finished difference Result 174 states and 228 transitions. [2021-10-28 09:58:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:58:31,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 9 [2021-10-28 09:58:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:31,666 INFO L225 Difference]: With dead ends: 174 [2021-10-28 09:58:31,666 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 09:58:31,667 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 09:58:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 09:58:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-28 09:58:31,690 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 09:58:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2021-10-28 09:58:31,694 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 9 [2021-10-28 09:58:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:31,695 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2021-10-28 09:58:31,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2021-10-28 09:58:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:58:31,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:31,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:31,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:31,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:31,910 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 09:58:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1249781436, now seen corresponding path program 1 times [2021-10-28 09:58:31,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:31,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86226898] [2021-10-28 09:58:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:31,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:31,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:31,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:31,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:58:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:32,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:58:32,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:32,425 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-28 09:58:32,426 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 09:58:38,558 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-10-28 09:58:38,559 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 09:58:47,847 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 09:58:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:49,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:50,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:50,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86226898] [2021-10-28 09:58:50,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86226898] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:50,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:50,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:58:50,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446743693] [2021-10-28 09:58:50,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:58:50,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:58:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:58:50,079 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 09:58:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:52,278 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2021-10-28 09:58:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:58:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2021-10-28 09:58:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:52,282 INFO L225 Difference]: With dead ends: 261 [2021-10-28 09:58:52,283 INFO L226 Difference]: Without dead ends: 261 [2021-10-28 09:58:52,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-28 09:58:52,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2021-10-28 09:58:52,319 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 09:58:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-10-28 09:58:52,328 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 10 [2021-10-28 09:58:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:52,329 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-10-28 09:58:52,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-10-28 09:58:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:58:52,330 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:52,330 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:52,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:52,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:52,543 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 09:58:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:52,543 INFO L85 PathProgramCache]: Analyzing trace with hash -88518740, now seen corresponding path program 1 times [2021-10-28 09:58:52,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:52,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368271630] [2021-10-28 09:58:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:52,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:52,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:52,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:52,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:58:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:52,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 09:58:52,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:53,101 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-28 09:58:53,102 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 09:58:53,116 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:58:53,117 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 09:58:56,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:58:56,616 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 09:58:56,617 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 09:59:02,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 83 [2021-10-28 09:59:02,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2021-10-28 09:59:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:05,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:59:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:05,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:59:05,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368271630] [2021-10-28 09:59:05,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368271630] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:05,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:05,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:59:05,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151034089] [2021-10-28 09:59:05,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:59:05,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:59:05,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:59:05,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:59:05,808 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 09:59:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:07,746 INFO L93 Difference]: Finished difference Result 379 states and 540 transitions. [2021-10-28 09:59:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:59:07,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2021-10-28 09:59:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:07,758 INFO L225 Difference]: With dead ends: 379 [2021-10-28 09:59:07,759 INFO L226 Difference]: Without dead ends: 379 [2021-10-28 09:59:07,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:59:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-28 09:59:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 304. [2021-10-28 09:59:07,792 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 09:59:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 486 transitions. [2021-10-28 09:59:07,803 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 486 transitions. Word has length 11 [2021-10-28 09:59:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:07,804 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 486 transitions. [2021-10-28 09:59:07,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:59:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 486 transitions. [2021-10-28 09:59:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:59:07,804 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:07,805 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:07,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:59:08,018 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 09:59:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1550886470, now seen corresponding path program 1 times [2021-10-28 09:59:08,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:59:08,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128809316] [2021-10-28 09:59:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:08,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:59:08,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:59:08,020 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:59:08,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:59:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:08,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:59:08,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:08,542 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 09:59:08,542 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 09:59:11,505 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:59:11,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2021-10-28 09:59:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:19,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:59:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:20,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:59:20,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128809316] [2021-10-28 09:59:20,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128809316] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:20,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:20,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:59:20,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828970820] [2021-10-28 09:59:20,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:59:20,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:59:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:59:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:59:20,118 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 09:59:31,382 WARN L207 SmtUtils]: Spent 10.98 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-28 10:00:05,001 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 10:00:05,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 10:00:05,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:05,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 10:00:05,203 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_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 10:00:05,207 INFO L168 Benchmark]: Toolchain (without parser) took 98844.75 ms. Allocated memory was 56.6 MB in the beginning and 144.7 MB in the end (delta: 88.1 MB). Free memory was 32.8 MB in the beginning and 65.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:05,208 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 37.6 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:00:05,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.70 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.6 MB in the beginning and 45.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:05,209 INFO L168 Benchmark]: Boogie Preprocessor took 80.36 ms. Allocated memory is still 73.4 MB. Free memory was 45.9 MB in the beginning and 42.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:05,210 INFO L168 Benchmark]: RCFGBuilder took 801.89 ms. Allocated memory is still 73.4 MB. Free memory was 42.3 MB in the beginning and 47.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:05,211 INFO L168 Benchmark]: TraceAbstraction took 97296.86 ms. Allocated memory was 73.4 MB in the beginning and 144.7 MB in the end (delta: 71.3 MB). Free memory was 46.7 MB in the beginning and 65.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 54.3 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:05,230 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 56.6 MB. Free memory was 37.6 MB in the beginning and 37.6 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 659.70 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.6 MB in the beginning and 45.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.36 ms. Allocated memory is still 73.4 MB. Free memory was 45.9 MB in the beginning and 42.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 801.89 ms. Allocated memory is still 73.4 MB. Free memory was 42.3 MB in the beginning and 47.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97296.86 ms. Allocated memory was 73.4 MB in the beginning and 144.7 MB in the end (delta: 71.3 MB). Free memory was 46.7 MB in the beginning and 65.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 54.3 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_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c1077c-ea66-42f3-a281-e7fdfe1f0e97/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...