./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.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_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/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_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/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_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/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 2a51e7d7d3160b4418bb04f01bccc7314d2964c0 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:21:40,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:21:40,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:21:41,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:21:41,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:21:41,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:21:41,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:21:41,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:21:41,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:21:41,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:21:41,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:21:41,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:21:41,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:21:41,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:21:41,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:21:41,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:21:41,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:21:41,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:21:41,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:21:41,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:21:41,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:21:41,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:21:41,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:21:41,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:21:41,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:21:41,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:21:41,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:21:41,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:21:41,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:21:41,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:21:41,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:21:41,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:21:41,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:21:41,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:21:41,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:21:41,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:21:41,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:21:41,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:21:41,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:21:41,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:21:41,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:21:41,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:21:41,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:21:41,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:21:41,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:21:41,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:21:41,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:21:41,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:21:41,140 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:21:41,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:21:41,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:21:41,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:21:41,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:21:41,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:21:41,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:21:41,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:21:41,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:21:41,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:21:41,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:21:41,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:21:41,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:21:41,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:21:41,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:21:41,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:21:41,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:21:41,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:21:41,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:21:41,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:21:41,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:21:41,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:21:41,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:21:41,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:21:41,152 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_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a51e7d7d3160b4418bb04f01bccc7314d2964c0 [2021-10-13 01:21:41,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:21:41,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:21:41,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:21:41,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:21:41,591 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:21:41,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-10-13 01:21:41,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/data/5dccffe29/5b9c04ef19b84fe2afa9f7ad06aa571b/FLAGc498fe40c [2021-10-13 01:21:42,355 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:21:42,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-10-13 01:21:42,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/data/5dccffe29/5b9c04ef19b84fe2afa9f7ad06aa571b/FLAGc498fe40c [2021-10-13 01:21:42,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/data/5dccffe29/5b9c04ef19b84fe2afa9f7ad06aa571b [2021-10-13 01:21:42,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:21:42,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:21:42,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:21:42,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:21:42,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:21:42,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:21:42" (1/1) ... [2021-10-13 01:21:42,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740436ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:42, skipping insertion in model container [2021-10-13 01:21:42,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:21:42" (1/1) ... [2021-10-13 01:21:42,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:21:42,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:21:42,997 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_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2021-10-13 01:21:43,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:21:43,040 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:21:43,063 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_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2021-10-13 01:21:43,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:21:43,112 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:21:43,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43 WrapperNode [2021-10-13 01:21:43,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:21:43,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:21:43,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:21:43,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:21:43,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:21:43,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:21:43,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:21:43,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:21:43,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:21:43,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:21:43,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:21:43,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:21:43,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (1/1) ... [2021-10-13 01:21:43,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:21:43,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:43,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:43,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:21:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:21:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:21:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:21:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:21:43,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:21:43,782 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-13 01:21:43,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:43 BoogieIcfgContainer [2021-10-13 01:21:43,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:21:43,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:21:43,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:21:43,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:21:43,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:21:42" (1/3) ... [2021-10-13 01:21:43,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff545f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:21:43, skipping insertion in model container [2021-10-13 01:21:43,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:43" (2/3) ... [2021-10-13 01:21:43,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff545f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:21:43, skipping insertion in model container [2021-10-13 01:21:43,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:43" (3/3) ... [2021-10-13 01:21:43,812 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2021-10-13 01:21:43,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:21:43,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-13 01:21:43,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:21:43,890 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 01:21:43,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-13 01:21:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 45 states have internal predecessors, (59), 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 01:21:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:21:43,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:43,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:43,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash 688476657, now seen corresponding path program 1 times [2021-10-13 01:21:43,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:43,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118139503] [2021-10-13 01:21:43,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:43,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:44,121 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 01:21:44,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:44,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118139503] [2021-10-13 01:21:44,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118139503] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:44,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:44,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:21:44,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639967428] [2021-10-13 01:21:44,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:21:44,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:21:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:21:44,185 INFO L87 Difference]: Start difference. First operand has 46 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 45 states have internal predecessors, (59), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 01:21:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:44,247 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2021-10-13 01:21:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:21:44,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-10-13 01:21:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:44,261 INFO L225 Difference]: With dead ends: 86 [2021-10-13 01:21:44,261 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 01:21:44,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:21:44,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 01:21:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-13 01:21:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 40 states have internal predecessors, (42), 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 01:21:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-13 01:21:44,315 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2021-10-13 01:21:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:44,317 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-13 01:21:44,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 01:21:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-13 01:21:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:21:44,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:44,320 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:44,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:21:44,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:44,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:44,326 INFO L82 PathProgramCache]: Analyzing trace with hash -186371961, now seen corresponding path program 1 times [2021-10-13 01:21:44,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:44,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005948918] [2021-10-13 01:21:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:44,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:44,518 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 01:21:44,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:44,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005948918] [2021-10-13 01:21:44,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005948918] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:44,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:44,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:21:44,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008733566] [2021-10-13 01:21:44,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:21:44,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:21:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:21:44,531 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 01:21:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:44,623 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-10-13 01:21:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:21:44,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-13 01:21:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:44,625 INFO L225 Difference]: With dead ends: 45 [2021-10-13 01:21:44,625 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 01:21:44,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:21:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 01:21:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-10-13 01:21:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2) internal successors, (36), 34 states have internal predecessors, (36), 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 01:21:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-10-13 01:21:44,635 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 11 [2021-10-13 01:21:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:44,636 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-13 01:21:44,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 01:21:44,637 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-10-13 01:21:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 01:21:44,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:44,638 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:44,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:21:44,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:44,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:44,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1285329802, now seen corresponding path program 1 times [2021-10-13 01:21:44,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:44,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175733073] [2021-10-13 01:21:44,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:44,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:44,791 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 01:21:44,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:44,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175733073] [2021-10-13 01:21:44,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175733073] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:44,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:44,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:21:44,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878466277] [2021-10-13 01:21:44,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:21:44,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:21:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:21:44,796 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. 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 01:21:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:44,966 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-10-13 01:21:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:21:44,968 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 01:21:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:44,970 INFO L225 Difference]: With dead ends: 51 [2021-10-13 01:21:44,972 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 01:21:44,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:21:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 01:21:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-10-13 01:21:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.2) internal successors, (48), 44 states have internal predecessors, (48), 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 01:21:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-10-13 01:21:44,987 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 13 [2021-10-13 01:21:44,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:44,988 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-10-13 01:21:44,989 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 01:21:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-10-13 01:21:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:21:44,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:44,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:44,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:21:44,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:44,995 INFO L82 PathProgramCache]: Analyzing trace with hash 825693350, now seen corresponding path program 1 times [2021-10-13 01:21:44,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:44,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099520236] [2021-10-13 01:21:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:44,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:45,121 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 01:21:45,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:45,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099520236] [2021-10-13 01:21:45,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099520236] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:45,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:45,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:21:45,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135979363] [2021-10-13 01:21:45,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:21:45,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:21:45,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:21:45,131 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 01:21:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:45,265 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-10-13 01:21:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:21:45,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-10-13 01:21:45,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:45,267 INFO L225 Difference]: With dead ends: 56 [2021-10-13 01:21:45,267 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 01:21:45,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:21:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 01:21:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-10-13 01:21:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.186046511627907) internal successors, (51), 47 states have internal predecessors, (51), 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 01:21:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-10-13 01:21:45,277 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 16 [2021-10-13 01:21:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:45,278 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-10-13 01:21:45,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 01:21:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-10-13 01:21:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:21:45,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:45,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:45,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:21:45,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:45,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:45,293 INFO L82 PathProgramCache]: Analyzing trace with hash -960063632, now seen corresponding path program 1 times [2021-10-13 01:21:45,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:45,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169980817] [2021-10-13 01:21:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:45,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:45,385 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 01:21:45,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:45,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169980817] [2021-10-13 01:21:45,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169980817] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:45,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:45,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 01:21:45,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802649550] [2021-10-13 01:21:45,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:21:45,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:45,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:21:45,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:21:45,389 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 01:21:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:45,635 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-10-13 01:21:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:21:45,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-10-13 01:21:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:45,637 INFO L225 Difference]: With dead ends: 74 [2021-10-13 01:21:45,637 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 01:21:45,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:21:45,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 01:21:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-10-13 01:21:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 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 01:21:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-10-13 01:21:45,650 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 17 [2021-10-13 01:21:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:45,650 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-10-13 01:21:45,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 01:21:45,651 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-10-13 01:21:45,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 01:21:45,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:45,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:45,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:21:45,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:45,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:45,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1077483319, now seen corresponding path program 1 times [2021-10-13 01:21:45,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:45,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953920381] [2021-10-13 01:21:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:45,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:45,750 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 01:21:45,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:45,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953920381] [2021-10-13 01:21:45,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953920381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:45,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:45,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 01:21:45,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942106907] [2021-10-13 01:21:45,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:21:45,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:45,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:21:45,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:21:45,754 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 01:21:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:45,973 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-10-13 01:21:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:21:45,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) Word has length 18 [2021-10-13 01:21:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:45,975 INFO L225 Difference]: With dead ends: 66 [2021-10-13 01:21:45,975 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 01:21:45,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:21:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 01:21:45,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-10-13 01:21:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 55 states have internal predecessors, (59), 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 01:21:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-10-13 01:21:45,986 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 18 [2021-10-13 01:21:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:45,987 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-10-13 01:21:45,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 01:21:45,987 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-10-13 01:21:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 01:21:45,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:45,989 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:45,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 01:21:45,989 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash 673404737, now seen corresponding path program 1 times [2021-10-13 01:21:45,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:45,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013442778] [2021-10-13 01:21:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:45,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:46,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:46,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013442778] [2021-10-13 01:21:46,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013442778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:46,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16232289] [2021-10-13 01:21:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:46,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:46,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:46,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:21:46,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:21:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:46,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:21:46,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:46,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16232289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:46,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:21:46,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-13 01:21:46,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555329631] [2021-10-13 01:21:46,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:21:46,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:21:46,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:21:46,414 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 01:21:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:46,513 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-10-13 01:21:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:21:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 01:21:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:46,517 INFO L225 Difference]: With dead ends: 56 [2021-10-13 01:21:46,517 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 01:21:46,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:21:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 01:21:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-13 01:21:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.14) internal successors, (57), 53 states have internal predecessors, (57), 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 01:21:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-10-13 01:21:46,538 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 27 [2021-10-13 01:21:46,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:46,540 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-10-13 01:21:46,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 01:21:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-10-13 01:21:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 01:21:46,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:46,543 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 01:21:46,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:46,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:46,761 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:46,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1386043339, now seen corresponding path program 1 times [2021-10-13 01:21:46,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:46,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120908098] [2021-10-13 01:21:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:46,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:46,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:46,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120908098] [2021-10-13 01:21:46,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120908098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:46,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801661307] [2021-10-13 01:21:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:46,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:46,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:46,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:21:46,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 01:21:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:47,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 01:21:47,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:47,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801661307] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:47,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:21:47,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-13 01:21:47,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100853122] [2021-10-13 01:21:47,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 01:21:47,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:47,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 01:21:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:21:47,558 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 01:21:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:47,891 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-10-13 01:21:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:21:47,892 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 28 [2021-10-13 01:21:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:47,897 INFO L225 Difference]: With dead ends: 84 [2021-10-13 01:21:47,897 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 01:21:47,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 235.2ms TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:21:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 01:21:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2021-10-13 01:21:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 64 states have internal predecessors, (69), 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 01:21:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-13 01:21:47,917 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 28 [2021-10-13 01:21:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:47,918 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-13 01:21:47,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 01:21:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-13 01:21:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 01:21:47,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:47,924 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:47,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:48,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:48,140 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:48,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:48,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1397952348, now seen corresponding path program 1 times [2021-10-13 01:21:48,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:48,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369551182] [2021-10-13 01:21:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:48,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:48,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:48,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369551182] [2021-10-13 01:21:48,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369551182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:48,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031753405] [2021-10-13 01:21:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:48,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:48,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:48,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:21:48,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 01:21:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:48,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:21:48,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:48,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031753405] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:48,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:21:48,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-13 01:21:48,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747588965] [2021-10-13 01:21:48,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 01:21:48,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 01:21:48,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:21:48,797 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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 01:21:49,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:49,035 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-10-13 01:21:49,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:21:49,036 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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 29 [2021-10-13 01:21:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:49,039 INFO L225 Difference]: With dead ends: 75 [2021-10-13 01:21:49,039 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 01:21:49,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 187.6ms TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:21:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 01:21:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2021-10-13 01:21:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 64 states have internal predecessors, (68), 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 01:21:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-10-13 01:21:49,060 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 29 [2021-10-13 01:21:49,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:49,061 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-10-13 01:21:49,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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 01:21:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-10-13 01:21:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 01:21:49,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:49,074 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:49,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:49,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-13 01:21:49,300 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:49,300 INFO L82 PathProgramCache]: Analyzing trace with hash -749675952, now seen corresponding path program 2 times [2021-10-13 01:21:49,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:49,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756229403] [2021-10-13 01:21:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:49,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:49,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:49,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756229403] [2021-10-13 01:21:49,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756229403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:49,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054826898] [2021-10-13 01:21:49,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:21:49,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:49,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:21:49,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 01:21:49,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:21:49,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:21:49,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 01:21:49,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:21:49,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054826898] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:49,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:21:49,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-10-13 01:21:49,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017730914] [2021-10-13 01:21:49,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 01:21:49,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 01:21:49,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:21:49,997 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 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 01:21:50,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:50,350 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-10-13 01:21:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 01:21:50,351 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 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 39 [2021-10-13 01:21:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:50,352 INFO L225 Difference]: With dead ends: 65 [2021-10-13 01:21:50,352 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 01:21:50,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 377.3ms TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2021-10-13 01:21:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 01:21:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2021-10-13 01:21:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 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 01:21:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-10-13 01:21:50,358 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2021-10-13 01:21:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:50,359 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-10-13 01:21:50,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 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 01:21:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-10-13 01:21:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 01:21:50,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:50,360 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:50,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:50,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:50,588 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:50,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1149567465, now seen corresponding path program 2 times [2021-10-13 01:21:50,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:50,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976273266] [2021-10-13 01:21:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:50,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:50,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:50,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976273266] [2021-10-13 01:21:50,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976273266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:50,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010060954] [2021-10-13 01:21:50,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:21:50,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:50,844 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:21:50,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 01:21:51,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:21:51,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:21:51,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 01:21:51,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:51,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010060954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:51,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:21:51,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-13 01:21:51,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126217255] [2021-10-13 01:21:51,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:21:51,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:21:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:21:51,545 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 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 01:21:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:51,940 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-10-13 01:21:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 01:21:51,941 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 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 40 [2021-10-13 01:21:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:51,942 INFO L225 Difference]: With dead ends: 62 [2021-10-13 01:21:51,942 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 01:21:51,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 441.5ms TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2021-10-13 01:21:51,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 01:21:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-10-13 01:21:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 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 01:21:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-10-13 01:21:51,955 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 40 [2021-10-13 01:21:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:51,956 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-10-13 01:21:51,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 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 01:21:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-10-13 01:21:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 01:21:51,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:51,960 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:52,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:52,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:52,192 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:52,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:52,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1266031740, now seen corresponding path program 3 times [2021-10-13 01:21:52,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:52,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463861486] [2021-10-13 01:21:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:52,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:52,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:52,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463861486] [2021-10-13 01:21:52,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463861486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:52,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312565323] [2021-10-13 01:21:52,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:21:52,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:52,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 01:21:52,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 01:21:52,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:21:52,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 01:21:52,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:53,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312565323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:53,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:21:53,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-10-13 01:21:53,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954838307] [2021-10-13 01:21:53,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 01:21:53,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:53,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 01:21:53,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-10-13 01:21:53,638 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 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 01:21:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:54,953 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-10-13 01:21:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 01:21:54,954 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 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 51 [2021-10-13 01:21:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:54,955 INFO L225 Difference]: With dead ends: 73 [2021-10-13 01:21:54,955 INFO L226 Difference]: Without dead ends: 71 [2021-10-13 01:21:54,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1236.6ms TimeCoverageRelationStatistics Valid=398, Invalid=1954, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 01:21:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-13 01:21:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2021-10-13 01:21:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 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 01:21:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2021-10-13 01:21:54,974 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 51 [2021-10-13 01:21:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:54,976 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2021-10-13 01:21:54,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 26 states have internal predecessors, (99), 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 01:21:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2021-10-13 01:21:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 01:21:54,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:54,980 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:55,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:55,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 01:21:55,208 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-13 01:21:55,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:55,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1527938295, now seen corresponding path program 4 times [2021-10-13 01:21:55,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:55,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285642995] [2021-10-13 01:21:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:55,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 01:21:55,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:55,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285642995] [2021-10-13 01:21:55,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285642995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:55,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270226711] [2021-10-13 01:21:55,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:21:55,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:21:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:55,588 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:21:55,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 01:21:55,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:21:55,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:21:55,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 01:21:55,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:57,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270226711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:21:57,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:21:57,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2021-10-13 01:21:57,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9559817] [2021-10-13 01:21:57,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 01:21:57,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 01:21:57,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-10-13 01:21:57,014 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 28 states have internal predecessors, (115), 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 01:21:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:58,531 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-10-13 01:21:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 01:21:58,531 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 28 states have internal predecessors, (115), 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 62 [2021-10-13 01:21:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:58,532 INFO L225 Difference]: With dead ends: 82 [2021-10-13 01:21:58,532 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:21:58,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 1633.8ms TimeCoverageRelationStatistics Valid=863, Invalid=3297, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 01:21:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:21:58,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:21:58,535 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 01:21:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:21:58,536 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-10-13 01:21:58,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:58,536 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:58,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.107142857142857) internal successors, (115), 28 states have internal predecessors, (115), 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 01:21:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:21:58,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:21:58,540 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:58,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:58,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:58,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:58,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:58,542 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:58,542 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:58,542 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:58,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:58,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 01:21:58,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:21:58,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:58,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:58,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:58,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:58,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:59,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:59,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:59,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:59,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:59,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:21:59,656 INFO L853 garLoopResultBuilder]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~in~0)) (.cse1 (<= 0 ULTIMATE.start_main_~buf~0)) (.cse2 (<= 3 ULTIMATE.start_main_~inlen~0))) (or (and (= ULTIMATE.start_main_~buf~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0)) (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 (<= ULTIMATE.start_main_~buf~0 1) (< (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1))))) [2021-10-13 01:21:59,657 INFO L857 garLoopResultBuilder]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-10-13 01:21:59,657 INFO L853 garLoopResultBuilder]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) (<= 0 ULTIMATE.start_main_~buf~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0)) [2021-10-13 01:21:59,657 INFO L857 garLoopResultBuilder]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-10-13 01:21:59,657 INFO L860 garLoopResultBuilder]: At program point L18-23(lines 17 22) the Hoare annotation is: true [2021-10-13 01:21:59,658 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,658 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,658 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,658 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,658 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,658 INFO L857 garLoopResultBuilder]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,658 INFO L857 garLoopResultBuilder]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,659 INFO L857 garLoopResultBuilder]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,659 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-10-13 01:21:59,659 INFO L857 garLoopResultBuilder]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,659 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,659 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:21:59,659 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:21:59,660 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 48) no Hoare annotation was computed. [2021-10-13 01:21:59,660 INFO L857 garLoopResultBuilder]: For program point L37-3(lines 37 48) no Hoare annotation was computed. [2021-10-13 01:21:59,660 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,660 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,660 INFO L860 garLoopResultBuilder]: At program point L55(lines 25 56) the Hoare annotation is: true [2021-10-13 01:21:59,660 INFO L860 garLoopResultBuilder]: At program point L55-1(lines 24 56) the Hoare annotation is: true [2021-10-13 01:21:59,661 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-10-13 01:21:59,661 INFO L857 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-10-13 01:21:59,661 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,661 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 25 56) no Hoare annotation was computed. [2021-10-13 01:21:59,661 INFO L857 garLoopResultBuilder]: For program point L32(lines 25 56) no Hoare annotation was computed. [2021-10-13 01:21:59,661 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 01:21:59,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,662 INFO L857 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2021-10-13 01:21:59,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:21:59,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 01:21:59,662 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-13 01:21:59,663 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0))) (.cse1 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (<= 1 ULTIMATE.start_main_~in~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buf~0) .cse0 (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (and (= ULTIMATE.start_main_~buf~0 0) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (= ULTIMATE.start_main_~in~0 0) .cse1))) [2021-10-13 01:21:59,663 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-13 01:21:59,663 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (<= 1 ULTIMATE.start_main_~in~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buf~0) .cse0 .cse1 (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse2) (and (= ULTIMATE.start_main_~buf~0 0) .cse0 .cse1 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (= ULTIMATE.start_main_~in~0 0) .cse2))) [2021-10-13 01:21:59,663 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-13 01:21:59,664 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~in~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buf~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1))) [2021-10-13 01:21:59,664 INFO L857 garLoopResultBuilder]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-10-13 01:21:59,664 INFO L853 garLoopResultBuilder]: At program point L18-11(lines 17 48) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0))) (.cse1 (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1)))) (or (and (= ULTIMATE.start_main_~buf~0 0) .cse0 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (= ULTIMATE.start_main_~in~0 0) .cse1) (and (<= 1 ULTIMATE.start_main_~in~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buf~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse1))) [2021-10-13 01:21:59,664 INFO L857 garLoopResultBuilder]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-10-13 01:21:59,664 INFO L853 garLoopResultBuilder]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~in~0)) (.cse1 (<= 0 ULTIMATE.start_main_~buf~0)) (.cse2 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~buf~0 1) (<= (+ ULTIMATE.start_main_~in~0 2) ULTIMATE.start_main_~inlen~0) .cse2 (< (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0)) (and .cse0 .cse1 (<= 3 ULTIMATE.start_main_~inlen~0) (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) .cse2 (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1))) (and (= ULTIMATE.start_main_~buf~0 0) (= ULTIMATE.start_main_~in~0 0) .cse2 (<= 2 ULTIMATE.start_main_~bufferlen~0)))) [2021-10-13 01:21:59,665 INFO L857 garLoopResultBuilder]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-10-13 01:21:59,672 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:21:59,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:21:59 BoogieIcfgContainer [2021-10-13 01:21:59,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:21:59,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:21:59,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:21:59,700 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:21:59,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:43" (3/4) ... [2021-10-13 01:21:59,704 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:21:59,719 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 01:21:59,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 01:21:59,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:21:59,726 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:21:59,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:21:59,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:21:59,811 INFO L168 Benchmark]: Toolchain (without parser) took 17092.27 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 56.5 MB in the beginning and 139.6 MB in the end (delta: -83.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:59,812 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 62.8 MB in the beginning and 62.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:59,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.23 ms. Allocated memory is still 90.2 MB. Free memory was 56.5 MB in the beginning and 66.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:59,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.14 ms. Allocated memory is still 90.2 MB. Free memory was 66.1 MB in the beginning and 64.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:59,814 INFO L168 Benchmark]: Boogie Preprocessor took 61.52 ms. Allocated memory is still 90.2 MB. Free memory was 64.5 MB in the beginning and 63.6 MB in the end (delta: 917.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:59,814 INFO L168 Benchmark]: RCFGBuilder took 541.95 ms. Allocated memory is still 90.2 MB. Free memory was 63.6 MB in the beginning and 52.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:59,815 INFO L168 Benchmark]: TraceAbstraction took 15912.76 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 52.2 MB in the beginning and 142.7 MB in the end (delta: -90.5 MB). Peak memory consumption was 71.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:59,815 INFO L168 Benchmark]: Witness Printer took 109.61 ms. Allocated memory is still 172.0 MB. Free memory was 142.7 MB in the beginning and 139.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:59,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 62.8 MB in the beginning and 62.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.23 ms. Allocated memory is still 90.2 MB. Free memory was 56.5 MB in the beginning and 66.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.14 ms. Allocated memory is still 90.2 MB. Free memory was 66.1 MB in the beginning and 64.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.52 ms. Allocated memory is still 90.2 MB. Free memory was 64.5 MB in the beginning and 63.6 MB in the end (delta: 917.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 541.95 ms. Allocated memory is still 90.2 MB. Free memory was 63.6 MB in the beginning and 52.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15912.76 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 52.2 MB in the beginning and 142.7 MB in the end (delta: -90.5 MB). Peak memory consumption was 71.6 MB. Max. memory is 16.1 GB. * Witness Printer took 109.61 ms. Allocated memory is still 172.0 MB. Free memory was 142.7 MB in the beginning and 139.6 MB in the end (delta: 3.1 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 - 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 - 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 - 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, 46 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 15792.8ms, OverallIterations: 13, TraceHistogramMax: 5, EmptinessCheckTime: 57.5ms, AutomataDifference: 5320.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 887.8ms, InitialAbstractionConstructionTime: 14.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 359 SDtfs, 1213 SDslu, 1024 SDs, 0 SdLazy, 1285 SolverSat, 670 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1439.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 490 GetRequests, 241 SyntacticMatches, 8 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2234 ImplicationChecksByTransitivity, 4417.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=8, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 175.6ms AutomataMinimizationTime, 13 MinimizatonAttempts, 59 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 50 NumberOfFragments, 332 HoareAnnotationTreeSize, 10 FomulaSimplifications, 18201 FormulaSimplificationTreeSizeReduction, 268.3ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 677 FormulaSimplificationTreeSizeReductionInter, 609.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 125.6ms SsaConstructionTime, 531.1ms SatisfiabilityAnalysisTime, 5936.0ms InterpolantComputationTime, 637 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 617 ConstructedInterpolants, 0 QuantifiedInterpolants, 4373 SizeOfPredicates, 35 NumberOfNonLiveVariables, 846 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 15/492 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 8 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((buf == 0 && bufferlen == 2 + buflim) && bufferlen < inlen) && in == 0) && buf < buflim + 1) || ((((((1 <= in && bufferlen + 1 <= inlen) && 0 <= buf) && 1 <= cond) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && buf < buflim + 1) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= in && bufferlen + 1 <= inlen) && 0 <= buf) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && buf < buflim) && !(0 == cond)) || (((((buf == 0 && bufferlen == 2 + buflim) && 1 == cond) && bufferlen < inlen) && in == 0) && buf < buflim) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= in && bufferlen + 1 <= inlen) && 0 <= buf) && bufferlen == 2 + buflim) && 1 == cond) && in + 3 + buflim <= buf + inlen) && buf < buflim) || (((((buf == 0 && bufferlen == 2 + buflim) && 1 == cond) && bufferlen < inlen) && in == 0) && buf < buflim) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((buf == 0 && !(0 == cond)) && 2 <= bufferlen) || (((((1 <= in && 0 <= buf) && 1 <= cond) && 3 <= inlen) && buf <= 1) && buf + 1 < bufferlen)) || (((((1 <= in && 0 <= buf) && 3 <= inlen) && bufferlen == 2 + buflim) && 1 == cond) && buf < buflim + 1) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((buf + 1 <= bufferlen && 0 <= buf) && !(0 == cond)) && 2 <= bufferlen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= in && 0 <= buf) && buf <= 1) && in + 2 <= inlen) && !(0 == cond)) && buf + 1 < bufferlen) || (((((1 <= in && 0 <= buf) && 3 <= inlen) && bufferlen == 2 + buflim) && !(0 == cond)) && buf < buflim + 1)) || (((buf == 0 && in == 0) && !(0 == cond)) && 2 <= bufferlen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((1 <= in && bufferlen + 1 <= inlen) && 0 <= buf) && 1 <= cond) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && buf < buflim + 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 01:21:59,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e33c574-aedd-4aa8-bcdd-892fd3c339a8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...