./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -s /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer --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 0.2.0-a4ecdab [2020-11-30 00:50:50,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:50:50,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:50:50,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:50:50,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:50:50,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:50:50,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:50:50,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:50:50,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:50:50,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:50:50,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:50:50,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:50:50,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:50:50,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:50:50,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:50:50,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:50:50,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:50:50,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:50:50,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:50:50,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:50:50,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:50:50,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:50:50,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:50:50,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:50:50,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:50:50,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:50:50,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:50:50,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:50:50,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:50:50,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:50:50,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:50:50,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:50:50,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:50:50,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:50:50,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:50:50,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:50:50,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:50:50,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:50:50,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:50:50,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:50:50,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:50:50,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:50:50,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:50:50,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:50:50,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:50:50,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:50:50,988 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:50:50,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:50:50,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:50:50,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:50:50,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:50:50,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:50:50,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:50:50,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:50:50,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:50:50,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:50:50,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:50:50,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:50:50,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:50:50,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:50:50,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:50:50,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:50:50,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:50:50,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:50:50,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:50:50,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:50:50,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:50:50,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:50:50,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:50:50,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:50:50,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:50:50,997 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-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a51e7d7d3160b4418bb04f01bccc7314d2964c0 [2020-11-30 00:50:51,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:50:51,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:50:51,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:50:51,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:50:51,369 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:50:51,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2020-11-30 00:50:51,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/data/37c1258a0/3611a5f27669415eb108bb0302a3fdda/FLAG7f8d61a24 [2020-11-30 00:50:52,142 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:50:52,143 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2020-11-30 00:50:52,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/data/37c1258a0/3611a5f27669415eb108bb0302a3fdda/FLAG7f8d61a24 [2020-11-30 00:50:52,499 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/data/37c1258a0/3611a5f27669415eb108bb0302a3fdda [2020-11-30 00:50:52,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:50:52,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:50:52,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:50:52,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:50:52,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:50:52,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c056f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52, skipping insertion in model container [2020-11-30 00:50:52,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:50:52,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:50:52,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:50:52,785 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:50:52,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:50:52,836 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:50:52,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52 WrapperNode [2020-11-30 00:50:52,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:50:52,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:50:52,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:50:52,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:50:52,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:50:52,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:50:52,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:50:52,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:50:52,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... [2020-11-30 00:50:52,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:50:52,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:50:52,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:50:52,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:50:52,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:50:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:50:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:50:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:50:52,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:50:53,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:50:53,602 INFO L298 CfgBuilder]: Removed 37 assume(true) statements. [2020-11-30 00:50:53,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:50:53 BoogieIcfgContainer [2020-11-30 00:50:53,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:50:53,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:50:53,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:50:53,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:50:53,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:50:52" (1/3) ... [2020-11-30 00:50:53,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c349f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:50:53, skipping insertion in model container [2020-11-30 00:50:53,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:52" (2/3) ... [2020-11-30 00:50:53,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c349f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:50:53, skipping insertion in model container [2020-11-30 00:50:53,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:50:53" (3/3) ... [2020-11-30 00:50:53,614 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-11-30 00:50:53,623 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:50:53,627 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-30 00:50:53,636 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-30 00:50:53,663 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:50:53,663 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:50:53,663 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:50:53,664 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:50:53,664 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:50:53,664 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:50:53,664 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:50:53,664 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:50:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-11-30 00:50:53,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:50:53,688 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:53,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:53,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1147777426, now seen corresponding path program 1 times [2020-11-30 00:50:53,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:53,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487256967] [2020-11-30 00:50:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:53,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487256967] [2020-11-30 00:50:53,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:53,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:50:53,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698474171] [2020-11-30 00:50:53,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:50:53,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:53,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:50:53,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:50:53,906 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 2 states. [2020-11-30 00:50:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:53,971 INFO L93 Difference]: Finished difference Result 126 states and 165 transitions. [2020-11-30 00:50:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:50:53,973 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 00:50:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:53,983 INFO L225 Difference]: With dead ends: 126 [2020-11-30 00:50:54,007 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 00:50:54,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:50:54,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 00:50:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-30 00:50:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-30 00:50:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-11-30 00:50:54,054 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 12 [2020-11-30 00:50:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:54,055 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-11-30 00:50:54,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:50:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-11-30 00:50:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:50:54,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:54,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:54,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:50:54,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:54,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1315712712, now seen corresponding path program 1 times [2020-11-30 00:50:54,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:54,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319862330] [2020-11-30 00:50:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:54,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319862330] [2020-11-30 00:50:54,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:54,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:50:54,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431773249] [2020-11-30 00:50:54,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:50:54,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:50:54,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:50:54,152 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 4 states. [2020-11-30 00:50:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:54,254 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-11-30 00:50:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:50:54,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 00:50:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:54,255 INFO L225 Difference]: With dead ends: 61 [2020-11-30 00:50:54,256 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:50:54,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:50:54,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:50:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-11-30 00:50:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 00:50:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-11-30 00:50:54,265 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 13 [2020-11-30 00:50:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:54,265 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-11-30 00:50:54,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:50:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-11-30 00:50:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:50:54,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:54,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:54,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:50:54,267 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:54,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2065014123, now seen corresponding path program 1 times [2020-11-30 00:50:54,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:54,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66527144] [2020-11-30 00:50:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:54,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66527144] [2020-11-30 00:50:54,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:54,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:50:54,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557301852] [2020-11-30 00:50:54,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:50:54,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:54,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:50:54,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:50:54,422 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-11-30 00:50:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:54,629 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-11-30 00:50:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:50:54,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-30 00:50:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:54,631 INFO L225 Difference]: With dead ends: 65 [2020-11-30 00:50:54,632 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 00:50:54,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:50:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 00:50:54,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-11-30 00:50:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 00:50:54,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-11-30 00:50:54,642 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 15 [2020-11-30 00:50:54,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:54,642 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-11-30 00:50:54,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:50:54,643 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-11-30 00:50:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:50:54,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:54,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:54,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:50:54,648 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:54,651 INFO L82 PathProgramCache]: Analyzing trace with hash 193701111, now seen corresponding path program 1 times [2020-11-30 00:50:54,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:54,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156556239] [2020-11-30 00:50:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:54,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156556239] [2020-11-30 00:50:54,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:54,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:50:54,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769781960] [2020-11-30 00:50:54,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:50:54,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:54,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:50:54,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:50:54,729 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 4 states. [2020-11-30 00:50:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:54,866 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-30 00:50:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:50:54,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 00:50:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:54,869 INFO L225 Difference]: With dead ends: 70 [2020-11-30 00:50:54,869 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 00:50:54,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:50:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 00:50:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-11-30 00:50:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 00:50:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-11-30 00:50:54,887 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 18 [2020-11-30 00:50:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:54,891 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-11-30 00:50:54,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:50:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-11-30 00:50:54,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:50:54,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:54,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:54,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:50:54,894 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:54,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:54,894 INFO L82 PathProgramCache]: Analyzing trace with hash -362658927, now seen corresponding path program 1 times [2020-11-30 00:50:54,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:54,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826693231] [2020-11-30 00:50:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:55,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826693231] [2020-11-30 00:50:55,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:55,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:50:55,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395023647] [2020-11-30 00:50:55,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:50:55,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:55,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:50:55,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:50:55,027 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2020-11-30 00:50:55,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:55,266 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2020-11-30 00:50:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:50:55,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-30 00:50:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:55,270 INFO L225 Difference]: With dead ends: 92 [2020-11-30 00:50:55,270 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 00:50:55,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:50:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 00:50:55,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-11-30 00:50:55,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 00:50:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-11-30 00:50:55,284 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 19 [2020-11-30 00:50:55,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:55,284 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-11-30 00:50:55,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:50:55,285 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-11-30 00:50:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:50:55,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:55,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:55,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:50:55,286 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:55,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1848655546, now seen corresponding path program 1 times [2020-11-30 00:50:55,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:55,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503554675] [2020-11-30 00:50:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:55,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503554675] [2020-11-30 00:50:55,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:55,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:50:55,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070837535] [2020-11-30 00:50:55,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:50:55,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:55,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:50:55,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:50:55,414 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 7 states. [2020-11-30 00:50:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:55,616 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2020-11-30 00:50:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:50:55,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-30 00:50:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:55,621 INFO L225 Difference]: With dead ends: 80 [2020-11-30 00:50:55,621 INFO L226 Difference]: Without dead ends: 76 [2020-11-30 00:50:55,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:50:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-30 00:50:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-11-30 00:50:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 00:50:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-11-30 00:50:55,641 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 20 [2020-11-30 00:50:55,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:55,644 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-11-30 00:50:55,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:50:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-11-30 00:50:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 00:50:55,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:55,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:55,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:50:55,649 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:55,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2037054178, now seen corresponding path program 1 times [2020-11-30 00:50:55,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:55,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959283358] [2020-11-30 00:50:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:55,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959283358] [2020-11-30 00:50:55,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638483594] [2020-11-30 00:50:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:50:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:55,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:50:55,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:50:55,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:55,891 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:55,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:50:55,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-30 00:50:55,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192412779] [2020-11-30 00:50:55,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:50:55,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:55,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:50:55,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:50:55,915 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 7 states. [2020-11-30 00:50:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:56,021 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-11-30 00:50:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:50:56,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-11-30 00:50:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:56,023 INFO L225 Difference]: With dead ends: 66 [2020-11-30 00:50:56,023 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 00:50:56,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:50:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 00:50:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-30 00:50:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-30 00:50:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-11-30 00:50:56,037 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 29 [2020-11-30 00:50:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:56,038 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-11-30 00:50:56,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:50:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-11-30 00:50:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:50:56,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:56,041 INFO L422 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, 1, 1] [2020-11-30 00:50:56,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 00:50:56,256 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:56,256 INFO L82 PathProgramCache]: Analyzing trace with hash 946711302, now seen corresponding path program 1 times [2020-11-30 00:50:56,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:56,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182639069] [2020-11-30 00:50:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:56,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182639069] [2020-11-30 00:50:56,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130751661] [2020-11-30 00:50:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:50:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:56,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:50:56,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:50:56,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:56,638 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:50:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:56,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:50:56,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-11-30 00:50:56,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396316103] [2020-11-30 00:50:56,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 00:50:56,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:56,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 00:50:56,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:50:56,667 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 13 states. [2020-11-30 00:50:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:57,077 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2020-11-30 00:50:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 00:50:57,077 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-11-30 00:50:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:57,078 INFO L225 Difference]: With dead ends: 100 [2020-11-30 00:50:57,078 INFO L226 Difference]: Without dead ends: 80 [2020-11-30 00:50:57,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:50:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-30 00:50:57,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-11-30 00:50:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-30 00:50:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-11-30 00:50:57,088 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 30 [2020-11-30 00:50:57,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:57,088 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-11-30 00:50:57,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 00:50:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-11-30 00:50:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:50:57,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:57,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:57,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:50:57,312 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:57,313 INFO L82 PathProgramCache]: Analyzing trace with hash -510540315, now seen corresponding path program 1 times [2020-11-30 00:50:57,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:57,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974268211] [2020-11-30 00:50:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:57,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974268211] [2020-11-30 00:50:57,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931778334] [2020-11-30 00:50:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:50:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:57,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:50:57,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:50:57,553 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:57,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:57,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:57,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:50:57,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-11-30 00:50:57,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072177477] [2020-11-30 00:50:57,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:50:57,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:57,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:50:57,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:50:57,585 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-11-30 00:50:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:57,869 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2020-11-30 00:50:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 00:50:57,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-11-30 00:50:57,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:57,871 INFO L225 Difference]: With dead ends: 87 [2020-11-30 00:50:57,871 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 00:50:57,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2020-11-30 00:50:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 00:50:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2020-11-30 00:50:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-30 00:50:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-11-30 00:50:57,883 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 31 [2020-11-30 00:50:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:57,883 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-11-30 00:50:57,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:50:57,886 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-11-30 00:50:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-30 00:50:57,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:57,890 INFO L422 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, 1, 1] [2020-11-30 00:50:58,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:50:58,104 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:58,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1128036465, now seen corresponding path program 2 times [2020-11-30 00:50:58,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:58,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102334868] [2020-11-30 00:50:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:58,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102334868] [2020-11-30 00:50:58,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557101654] [2020-11-30 00:50:58,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:50:58,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:50:58,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:50:58,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:50:58,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:50:58,439 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:50:58,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:58,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:50:58,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:50:58,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-11-30 00:50:58,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337172368] [2020-11-30 00:50:58,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 00:50:58,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:58,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 00:50:58,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:50:58,518 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 15 states. [2020-11-30 00:50:59,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:59,073 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-11-30 00:50:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:50:59,073 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-11-30 00:50:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:50:59,074 INFO L225 Difference]: With dead ends: 73 [2020-11-30 00:50:59,074 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:50:59,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2020-11-30 00:50:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:50:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-11-30 00:50:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:50:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-11-30 00:50:59,080 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2020-11-30 00:50:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:50:59,081 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-11-30 00:50:59,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 00:50:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-11-30 00:50:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-30 00:50:59,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:50:59,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:59,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:50:59,308 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:50:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash 815572442, now seen corresponding path program 2 times [2020-11-30 00:50:59,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:59,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691906595] [2020-11-30 00:50:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:59,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691906595] [2020-11-30 00:50:59,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875018074] [2020-11-30 00:50:59,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:50:59,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:50:59,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:50:59,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 00:50:59,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:50:59,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:59,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:59,856 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:50:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:59,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:50:59,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-11-30 00:50:59,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205908084] [2020-11-30 00:50:59,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 00:50:59,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:59,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 00:50:59,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:50:59,879 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 17 states. [2020-11-30 00:51:00,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:00,449 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-11-30 00:51:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 00:51:00,451 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-11-30 00:51:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:00,451 INFO L225 Difference]: With dead ends: 66 [2020-11-30 00:51:00,452 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 00:51:00,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=621, Unknown=0, NotChecked=0, Total=870 [2020-11-30 00:51:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 00:51:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-11-30 00:51:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 00:51:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-11-30 00:51:00,460 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 42 [2020-11-30 00:51:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:00,471 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-11-30 00:51:00,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 00:51:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-11-30 00:51:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 00:51:00,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:51:00,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:51:00,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-30 00:51:00,673 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:51:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:00,674 INFO L82 PathProgramCache]: Analyzing trace with hash 325298885, now seen corresponding path program 3 times [2020-11-30 00:51:00,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:51:00,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462898471] [2020-11-30 00:51:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:51:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:00,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462898471] [2020-11-30 00:51:00,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647415092] [2020-11-30 00:51:00,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:51:01,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 00:51:01,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:51:01,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:51:01,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:51:01,373 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:01,376 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:01,402 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:51:01,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:01,457 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:01,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:01,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:01,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:51:01,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2020-11-30 00:51:01,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621477214] [2020-11-30 00:51:01,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-30 00:51:01,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:51:01,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-30 00:51:01,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2020-11-30 00:51:01,542 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 25 states. [2020-11-30 00:51:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:03,095 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-11-30 00:51:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-30 00:51:03,096 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-11-30 00:51:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:03,097 INFO L225 Difference]: With dead ends: 77 [2020-11-30 00:51:03,097 INFO L226 Difference]: Without dead ends: 73 [2020-11-30 00:51:03,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=386, Invalid=1870, Unknown=0, NotChecked=0, Total=2256 [2020-11-30 00:51:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-30 00:51:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-11-30 00:51:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-30 00:51:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-11-30 00:51:03,113 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 53 [2020-11-30 00:51:03,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:03,116 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-11-30 00:51:03,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-30 00:51:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-11-30 00:51:03,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-30 00:51:03,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:51:03,125 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:51:03,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:51:03,326 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:51:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:03,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1424291066, now seen corresponding path program 4 times [2020-11-30 00:51:03,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:51:03,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550286566] [2020-11-30 00:51:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:51:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:03,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550286566] [2020-11-30 00:51:03,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089038819] [2020-11-30 00:51:03,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:51:03,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:51:03,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:51:03,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:51:03,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:51:04,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:04,211 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:04,243 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:51:04,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:04,291 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:04,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:04,313 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:51:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:04,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:51:04,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2020-11-30 00:51:04,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834975137] [2020-11-30 00:51:04,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-30 00:51:04,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:51:04,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-30 00:51:04,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2020-11-30 00:51:04,406 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 30 states. [2020-11-30 00:51:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:06,915 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-11-30 00:51:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-30 00:51:06,915 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 64 [2020-11-30 00:51:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:06,916 INFO L225 Difference]: With dead ends: 84 [2020-11-30 00:51:06,916 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:51:06,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=859, Invalid=4111, Unknown=0, NotChecked=0, Total=4970 [2020-11-30 00:51:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:51:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:51:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:51:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:51:06,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-11-30 00:51:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:06,920 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:51:06,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-30 00:51:06,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:51:06,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:51:07,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:51:07,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:51:07,551 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-11-30 00:51:07,801 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-11-30 00:51:07,982 INFO L270 CegarLoopResult]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 3 ULTIMATE.start_main_~inlen~0)) (.cse1 (<= 1 ULTIMATE.start_main_~in~0)) (.cse2 (<= 0 ULTIMATE.start_main_~buf~0))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~buf~0 0) (<= 2 ULTIMATE.start_main_~bufferlen~0)) (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) .cse1 .cse2) (and .cse0 (<= ULTIMATE.start_main_~buf~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (< (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) .cse2))) [2020-11-30 00:51:07,982 INFO L274 CegarLoopResult]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:51:07,982 INFO L270 CegarLoopResult]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) (<= 2 ULTIMATE.start_main_~bufferlen~0) (<= 0 ULTIMATE.start_main_~buf~0)) [2020-11-30 00:51:07,982 INFO L274 CegarLoopResult]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:51:07,982 INFO L277 CegarLoopResult]: At program point L18-23(lines 17 22) the Hoare annotation is: true [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L44(lines 44 45) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:51:07,983 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L37-1(lines 37 48) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-10(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L37-3(lines 37 48) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-11(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-12(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,984 INFO L274 CegarLoopResult]: For program point L12-14(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-15(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-16(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-18(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-19(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-20(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-22(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-23(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-24(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-26(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-27(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-28(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,985 INFO L274 CegarLoopResult]: For program point L12-30(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point L12-31(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L277 CegarLoopResult]: At program point L55(lines 25 56) the Hoare annotation is: true [2020-11-30 00:51:07,986 INFO L277 CegarLoopResult]: At program point L55-1(lines 24 56) the Hoare annotation is: true [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point L31-1(lines 25 56) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point L32(lines 25 56) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:51:07,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,987 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:07,987 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:51:07,987 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2))) (.cse1 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (= ULTIMATE.start_main_~buf~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) .cse1 (= ULTIMATE.start_main_~in~0 0)) (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (<= 1 ULTIMATE.start_main_~in~0) .cse1 (<= 0 ULTIMATE.start_main_~buf~0)))) [2020-11-30 00:51:07,987 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:51:07,987 INFO L270 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2))) (.cse2 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (= ULTIMATE.start_main_~buf~0 0) .cse0 .cse1 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) .cse2 (= ULTIMATE.start_main_~in~0 0)) (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) .cse0 (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) .cse1 (<= 1 ULTIMATE.start_main_~in~0) .cse2 (<= 0 ULTIMATE.start_main_~buf~0)))) [2020-11-30 00:51:07,987 INFO L274 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:51:07,987 INFO L270 CegarLoopResult]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) (<= 1 ULTIMATE.start_main_~in~0) (<= 0 ULTIMATE.start_main_~buf~0)) [2020-11-30 00:51:07,987 INFO L274 CegarLoopResult]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:51:07,987 INFO L270 CegarLoopResult]: At program point L18-11(lines 17 48) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)))) (or (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) .cse0 (<= 1 ULTIMATE.start_main_~in~0) (<= 0 ULTIMATE.start_main_~buf~0)) (and (= ULTIMATE.start_main_~buf~0 0) .cse0 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (<= 2 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~in~0 0)))) [2020-11-30 00:51:07,987 INFO L274 CegarLoopResult]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:51:07,988 INFO L270 CegarLoopResult]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse1 (<= 1 ULTIMATE.start_main_~in~0)) (.cse2 (<= 0 ULTIMATE.start_main_~buf~0))) (or (and .cse0 (= ULTIMATE.start_main_~buf~0 0) (<= 2 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~in~0 0)) (and .cse0 (<= (+ ULTIMATE.start_main_~in~0 2) ULTIMATE.start_main_~inlen~0) (<= ULTIMATE.start_main_~buf~0 1) .cse1 (< (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) .cse2) (and .cse0 (<= 3 ULTIMATE.start_main_~inlen~0) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) .cse1 .cse2))) [2020-11-30 00:51:07,988 INFO L274 CegarLoopResult]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:51:08,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:51:08 BoogieIcfgContainer [2020-11-30 00:51:08,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:51:08,029 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:51:08,029 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:51:08,029 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:51:08,030 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:50:53" (3/4) ... [2020-11-30 00:51:08,043 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:51:08,057 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 00:51:08,058 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:51:08,058 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:51:08,058 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:51:08,133 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_27a46158-918a-4f21-a8c0-5c675059d6b9/bin/uautomizer/witness.graphml [2020-11-30 00:51:08,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:51:08,135 INFO L168 Benchmark]: Toolchain (without parser) took 15629.94 ms. Allocated memory was 115.3 MB in the beginning and 209.7 MB in the end (delta: 94.4 MB). Free memory was 85.5 MB in the beginning and 90.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 89.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:08,135 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 81.8 MB. Free memory was 41.8 MB in the beginning and 41.8 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:51:08,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.58 ms. Allocated memory is still 115.3 MB. Free memory was 85.2 MB in the beginning and 93.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:08,136 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 115.3 MB. Free memory was 92.6 MB in the beginning and 91.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:08,137 INFO L168 Benchmark]: Boogie Preprocessor took 28.93 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 90.1 MB in the end (delta: 873.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:51:08,137 INFO L168 Benchmark]: RCFGBuilder took 701.16 ms. Allocated memory is still 115.3 MB. Free memory was 89.7 MB in the beginning and 71.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:08,137 INFO L168 Benchmark]: TraceAbstraction took 14422.74 ms. Allocated memory was 115.3 MB in the beginning and 209.7 MB in the end (delta: 94.4 MB). Free memory was 70.9 MB in the beginning and 95.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 104.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:08,138 INFO L168 Benchmark]: Witness Printer took 104.75 ms. Allocated memory is still 209.7 MB. Free memory was 95.0 MB in the beginning and 90.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:08,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 81.8 MB. Free memory was 41.8 MB in the beginning and 41.8 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.58 ms. Allocated memory is still 115.3 MB. Free memory was 85.2 MB in the beginning and 93.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 115.3 MB. Free memory was 92.6 MB in the beginning and 91.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.93 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 90.1 MB in the end (delta: 873.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 701.16 ms. Allocated memory is still 115.3 MB. Free memory was 89.7 MB in the beginning and 71.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14422.74 ms. Allocated memory was 115.3 MB in the beginning and 209.7 MB in the end (delta: 94.4 MB). Free memory was 70.9 MB in the beginning and 95.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 104.8 MB. Max. memory is 16.1 GB. * Witness Printer took 104.75 ms. Allocated memory is still 209.7 MB. Free memory was 95.0 MB in the beginning and 90.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((bufferlen + 1 <= inlen && buf + 2 <= bufferlen) && 1 <= cond) && buflim + in + 3 <= inlen + buf) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((buf == 0 && 1 == cond) && bufferlen == buflim + 2) && bufferlen < inlen) && buf < buflim) && in == 0) || ((((((bufferlen + 1 <= inlen && !(0 == cond)) && bufferlen == buflim + 2) && buflim + in + 3 <= inlen + buf) && 1 <= in) && buf < buflim) && 0 <= buf) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((!(0 == cond) && buf == 0) && 2 <= bufferlen) || (((((3 <= inlen && 1 == cond) && buf + 2 <= bufferlen) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf)) || (((((3 <= inlen && buf <= 1) && 1 <= cond) && 1 <= in) && buf + 1 < bufferlen) && 0 <= buf) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((bufferlen + 1 <= inlen && buf + 2 <= bufferlen) && 1 <= cond) && buflim + in + 3 <= inlen + buf) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf) || ((((buf == 0 && bufferlen == buflim + 2) && bufferlen < inlen) && 2 <= bufferlen) && in == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((buf == 0 && 1 == cond) && bufferlen == buflim + 2) && bufferlen < inlen) && buf < buflim) && in == 0) || ((((((bufferlen + 1 <= inlen && 1 == cond) && buflim + in + 3 <= inlen + buf) && bufferlen == buflim + 2) && 1 <= in) && buf < buflim) && 0 <= buf) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(0 == cond) && buf + 1 <= bufferlen) && 2 <= bufferlen) && 0 <= buf - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && buf == 0) && 2 <= bufferlen) && in == 0) || (((((!(0 == cond) && in + 2 <= inlen) && buf <= 1) && 1 <= in) && buf + 1 < bufferlen) && 0 <= buf)) || (((((!(0 == cond) && 3 <= inlen) && buf + 2 <= bufferlen) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 70 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.4s, OverallIterations: 13, TraceHistogramMax: 5, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 465 SDtfs, 1396 SDslu, 1548 SDs, 0 SdLazy, 1681 SolverSat, 733 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 505 GetRequests, 254 SyntacticMatches, 6 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 69 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 50 NumberOfFragments, 330 HoareAnnotationTreeSize, 10 FomulaSimplifications, 17927 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 924 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 677 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 657 ConstructedInterpolants, 0 QuantifiedInterpolants, 183328 SizeOfPredicates, 43 NumberOfNonLiveVariables, 860 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 11/492 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...