./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c573b473fe5d13973daf8eaca36a6666498a98a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:27:13,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:27:13,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:27:13,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:27:13,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:27:13,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:27:13,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:27:13,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:27:13,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:27:13,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:27:13,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:27:13,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:27:13,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:27:13,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:27:13,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:27:13,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:27:13,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:27:13,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:27:13,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:27:13,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:27:13,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:27:14,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:27:14,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:27:14,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:27:14,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:27:14,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:27:14,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:27:14,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:27:14,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:27:14,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:27:14,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:27:14,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:27:14,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:27:14,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:27:14,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:27:14,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:27:14,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:27:14,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:27:14,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:27:14,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:27:14,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:27:14,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:27:14,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:27:14,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:27:14,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:27:14,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:27:14,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:27:14,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:27:14,080 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:27:14,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:27:14,081 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:27:14,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:27:14,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:27:14,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:27:14,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:27:14,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:27:14,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:27:14,083 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:27:14,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:27:14,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:27:14,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:27:14,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:27:14,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:27:14,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:27:14,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:27:14,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:27:14,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:27:14,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:27:14,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:27:14,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:27:14,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:27:14,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:27:14,088 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_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c573b473fe5d13973daf8eaca36a6666498a98a [2021-10-13 00:27:14,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:27:14,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:27:14,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:27:14,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:27:14,368 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:27:14,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2021-10-13 00:27:14,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/data/6b6dce96c/ecd7f4671e9142e595afbb91f6d23f5e/FLAG0a8ff7ab8 [2021-10-13 00:27:14,896 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:27:14,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2021-10-13 00:27:14,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/data/6b6dce96c/ecd7f4671e9142e595afbb91f6d23f5e/FLAG0a8ff7ab8 [2021-10-13 00:27:15,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/data/6b6dce96c/ecd7f4671e9142e595afbb91f6d23f5e [2021-10-13 00:27:15,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:27:15,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:27:15,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:27:15,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:27:15,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:27:15,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cd5679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15, skipping insertion in model container [2021-10-13 00:27:15,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:27:15,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:27:15,525 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2021-10-13 00:27:15,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:27:15,560 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:27:15,572 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2021-10-13 00:27:15,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:27:15,589 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:27:15,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15 WrapperNode [2021-10-13 00:27:15,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:27:15,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:27:15,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:27:15,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:27:15,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:27:15,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:27:15,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:27:15,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:27:15,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:27:15,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:27:15,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:27:15,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:27:15,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (1/1) ... [2021-10-13 00:27:15,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:27:15,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:27:15,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:27:15,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:27:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:27:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:27:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:27:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:27:15,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:27:15,923 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 00:27:15,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:15 BoogieIcfgContainer [2021-10-13 00:27:15,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:27:15,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:27:15,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:27:15,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:27:15,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:27:15" (1/3) ... [2021-10-13 00:27:15,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9906c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:27:15, skipping insertion in model container [2021-10-13 00:27:15,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:15" (2/3) ... [2021-10-13 00:27:15,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9906c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:27:15, skipping insertion in model container [2021-10-13 00:27:15,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:15" (3/3) ... [2021-10-13 00:27:15,932 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2021-10-13 00:27:15,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:27:15,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 00:27:15,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:27:15,989 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-13 00:27:15,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 00:27:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 20 states have (on average 1.7) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:27:16,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:27:16,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:27:16,010 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:27:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:27:16,015 INFO L82 PathProgramCache]: Analyzing trace with hash 89926881, now seen corresponding path program 1 times [2021-10-13 00:27:16,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:27:16,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171933400] [2021-10-13 00:27:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:27:16,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:27:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:27:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:16,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:27:16,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171933400] [2021-10-13 00:27:16,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171933400] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:27:16,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:27:16,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:27:16,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980751224] [2021-10-13 00:27:16,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:27:16,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:27:16,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:27:16,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:27:16,329 INFO L87 Difference]: Start difference. First operand has 23 states, 20 states have (on average 1.7) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:16,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:27:16,449 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2021-10-13 00:27:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:27:16,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 00:27:16,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:27:16,459 INFO L225 Difference]: With dead ends: 44 [2021-10-13 00:27:16,460 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 00:27:16,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:27:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 00:27:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-13 00:27:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 00:27:16,512 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2021-10-13 00:27:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:27:16,513 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 00:27:16,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 00:27:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:27:16,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:27:16,515 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:27:16,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:27:16,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:27:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:27:16,523 INFO L82 PathProgramCache]: Analyzing trace with hash 520543588, now seen corresponding path program 1 times [2021-10-13 00:27:16,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:27:16,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721499524] [2021-10-13 00:27:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:27:16,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:27:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:27:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:16,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:27:16,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721499524] [2021-10-13 00:27:16,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721499524] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:27:16,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:27:16,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:27:16,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594717905] [2021-10-13 00:27:16,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:27:16,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:27:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:27:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:27:16,632 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:27:16,703 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-13 00:27:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:27:16,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 00:27:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:27:16,705 INFO L225 Difference]: With dead ends: 25 [2021-10-13 00:27:16,705 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 00:27:16,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:27:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 00:27:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-13 00:27:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-13 00:27:16,712 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2021-10-13 00:27:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:27:16,713 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-13 00:27:16,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-13 00:27:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:27:16,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:27:16,714 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:27:16,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:27:16,715 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:27:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:27:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2027175698, now seen corresponding path program 1 times [2021-10-13 00:27:16,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:27:16,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914752183] [2021-10-13 00:27:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:27:16,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:27:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:27:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:16,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:27:16,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914752183] [2021-10-13 00:27:16,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914752183] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:27:16,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997332692] [2021-10-13 00:27:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:27:16,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:27:16,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:27:16,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:27:16,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:27:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:27:16,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:27:16,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:27:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:17,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997332692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:27:17,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:27:17,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-13 00:27:17,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868650273] [2021-10-13 00:27:17,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:27:17,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:27:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:27:17,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:27:17,184 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:27:17,378 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-13 00:27:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:27:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 00:27:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:27:17,381 INFO L225 Difference]: With dead ends: 33 [2021-10-13 00:27:17,381 INFO L226 Difference]: Without dead ends: 31 [2021-10-13 00:27:17,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 204.0ms TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:27:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-13 00:27:17,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-10-13 00:27:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-10-13 00:27:17,394 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 21 [2021-10-13 00:27:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:27:17,395 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-10-13 00:27:17,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-10-13 00:27:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:27:17,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:27:17,398 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:27:17,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:27:17,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:27:17,613 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:27:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:27:17,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1244584384, now seen corresponding path program 2 times [2021-10-13 00:27:17,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:27:17,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470433795] [2021-10-13 00:27:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:27:17,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:27:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:27:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:27:17,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:27:17,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470433795] [2021-10-13 00:27:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470433795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:27:17,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556378691] [2021-10-13 00:27:17,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:27:17,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:27:17,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:27:17,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:27:17,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:27:17,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:27:17,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:27:17,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:27:17,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:27:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:27:18,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556378691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:27:18,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:27:18,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-10-13 00:27:18,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496606930] [2021-10-13 00:27:18,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:27:18,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:27:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:27:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:27:18,132 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:27:18,466 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-10-13 00:27:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:27:18,467 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 00:27:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:27:18,467 INFO L225 Difference]: With dead ends: 35 [2021-10-13 00:27:18,467 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:27:18,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 342.4ms TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:27:18,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:27:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:27:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:27:18,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-13 00:27:18,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:27:18,470 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:27:18,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:27:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:27:18,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:27:18,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:27:18,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:27:18,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:27:18,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-13 00:27:18,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:27:18,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:27:18,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:27:18,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:27:18,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:27:18,873 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 00:27:18,873 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-13 00:27:18,873 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-13 00:27:18,873 INFO L857 garLoopResultBuilder]: For program point L40(lines 25 56) no Hoare annotation was computed. [2021-10-13 00:27:18,873 INFO L857 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-10-13 00:27:18,874 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:27:18,874 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:27:18,874 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:27:18,874 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 00:27:18,874 INFO L857 garLoopResultBuilder]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2021-10-13 00:27:18,875 INFO L853 garLoopResultBuilder]: At program point L49-3(lines 49 53) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~leader_len~0)) (.cse1 (+ ULTIMATE.start_main_~p~0 (* 2 ULTIMATE.start_main_~ielen~0))) (.cse2 (<= 1 ULTIMATE.start_main_~p~0))) (or (and .cse0 (= ULTIMATE.start_main_~i~0 0) (<= .cse1 ULTIMATE.start_main_~bufsize_0~0) .cse2 (<= (+ ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~bufsize~0) ULTIMATE.start_main_~bufsize_0~0)) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= .cse1 (+ (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~bufsize_0~0)) .cse2))) [2021-10-13 00:27:18,875 INFO L857 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-10-13 00:27:18,875 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:27:18,875 INFO L860 garLoopResultBuilder]: At program point L54(lines 25 56) the Hoare annotation is: true [2021-10-13 00:27:18,875 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-13 00:27:18,875 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2021-10-13 00:27:18,875 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-13 00:27:18,876 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0) (<= (+ ULTIMATE.start_main_~p~0 (* 2 ULTIMATE.start_main_~ielen~0)) (+ (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~bufsize_0~0)) (<= 1 ULTIMATE.start_main_~p~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-13 00:27:18,876 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-10-13 00:27:18,876 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-13 00:27:18,876 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~p~0 (* 2 ULTIMATE.start_main_~ielen~0)) (+ (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~bufsize_0~0)) (<= 1 ULTIMATE.start_main_~p~0)) [2021-10-13 00:27:18,876 INFO L857 garLoopResultBuilder]: For program point L39(lines 25 56) no Hoare annotation was computed. [2021-10-13 00:27:18,876 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-13 00:27:18,881 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:27:18,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:27:18 BoogieIcfgContainer [2021-10-13 00:27:18,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:27:18,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:27:18,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:27:18,896 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:27:18,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:15" (3/4) ... [2021-10-13 00:27:18,899 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:27:18,909 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 00:27:18,909 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:27:18,910 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:27:18,910 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:27:18,948 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:27:18,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:27:18,950 INFO L168 Benchmark]: Toolchain (without parser) took 3635.47 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 83.9 MB in the beginning and 54.2 MB in the end (delta: 29.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:27:18,950 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 113.2 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:27:18,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.48 ms. Allocated memory is still 113.2 MB. Free memory was 83.6 MB in the beginning and 86.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:27:18,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.06 ms. Allocated memory is still 113.2 MB. Free memory was 86.8 MB in the beginning and 85.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:27:18,951 INFO L168 Benchmark]: Boogie Preprocessor took 19.47 ms. Allocated memory is still 113.2 MB. Free memory was 85.4 MB in the beginning and 84.5 MB in the end (delta: 962.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:27:18,952 INFO L168 Benchmark]: RCFGBuilder took 282.34 ms. Allocated memory is still 113.2 MB. Free memory was 84.2 MB in the beginning and 74.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:27:18,952 INFO L168 Benchmark]: TraceAbstraction took 2969.47 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 74.3 MB in the beginning and 56.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:27:18,953 INFO L168 Benchmark]: Witness Printer took 52.80 ms. Allocated memory is still 144.7 MB. Free memory was 56.3 MB in the beginning and 54.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:27:18,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 113.2 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.48 ms. Allocated memory is still 113.2 MB. Free memory was 83.6 MB in the beginning and 86.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.06 ms. Allocated memory is still 113.2 MB. Free memory was 86.8 MB in the beginning and 85.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.47 ms. Allocated memory is still 113.2 MB. Free memory was 85.4 MB in the beginning and 84.5 MB in the end (delta: 962.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 282.34 ms. Allocated memory is still 113.2 MB. Free memory was 84.2 MB in the beginning and 74.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2969.47 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 74.3 MB in the beginning and 56.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. * Witness Printer took 52.80 ms. Allocated memory is still 144.7 MB. Free memory was 56.3 MB in the beginning and 54.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2899.5ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 12.3ms, AutomataDifference: 759.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 198.1ms, InitialAbstractionConstructionTime: 10.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 67 SDtfs, 86 SDslu, 213 SDs, 0 SdLazy, 231 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 197.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 654.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 20 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 283 FormulaSimplificationTreeSizeReduction, 83.2ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 349 FormulaSimplificationTreeSizeReductionInter, 107.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 27.2ms SsaConstructionTime, 190.0ms SatisfiabilityAnalysisTime, 986.6ms InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 633 SizeOfPredicates, 14 NumberOfNonLiveVariables, 182 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((1 <= leader_len && i == 0) && p + 2 * ielen <= bufsize_0) && 1 <= p) && p + bufsize <= bufsize_0) || (((1 <= leader_len && 1 <= cond) && p + 2 * ielen <= 2 * i + bufsize_0) && 1 <= p) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((p + 2 <= bufsize_0 && 1 <= leader_len) && p + 2 * ielen <= 2 * i + bufsize_0) && 1 <= p) && !(0 == cond) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((p + 2 <= bufsize_0 && 1 <= leader_len) && 1 <= cond) && p + 2 * ielen <= 2 * i + bufsize_0) && 1 <= p RESULT: Ultimate proved your program to be correct! [2021-10-13 00:27:19,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ce799b-e96d-4ab6-90e0-8fdbafb54da2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...