./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC --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 dfd48abfacd60a3a4485060da29ebb446d23ac13 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:29:09,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:09,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:09,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:09,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:09,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:09,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:09,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:09,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:09,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:09,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:09,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:09,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:09,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:09,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:09,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:09,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:09,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:09,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:09,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:09,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:09,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:09,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:09,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:09,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:09,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:09,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:09,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:09,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:09,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:09,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:09,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:09,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:09,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:09,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:09,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:09,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:09,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:09,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:09,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:09,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:09,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:29:10,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:10,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:10,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:10,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:10,011 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:10,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:10,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:10,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:10,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:10,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:10,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:10,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:10,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:10,014 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:10,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:10,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:10,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:10,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:10,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:10,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:10,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:10,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:10,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:10,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:10,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:10,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:10,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:10,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:10,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd48abfacd60a3a4485060da29ebb446d23ac13 [2021-10-11 00:29:10,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:10,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:10,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:10,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:10,304 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:10,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2021-10-11 00:29:10,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/data/df4f50a0f/6e32098c7ab343a08360ccaa87134bbd/FLAGe122b65f7 [2021-10-11 00:29:10,841 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:10,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2021-10-11 00:29:10,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/data/df4f50a0f/6e32098c7ab343a08360ccaa87134bbd/FLAGe122b65f7 [2021-10-11 00:29:11,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/data/df4f50a0f/6e32098c7ab343a08360ccaa87134bbd [2021-10-11 00:29:11,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:11,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:29:11,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:11,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:11,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:11,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77bd207b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11, skipping insertion in model container [2021-10-11 00:29:11,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:11,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:11,456 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i[834,847] [2021-10-11 00:29:11,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:11,475 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:11,489 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i[834,847] [2021-10-11 00:29:11,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:11,508 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:11,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11 WrapperNode [2021-10-11 00:29:11,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:11,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:11,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:29:11,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:29:11,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:11,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:11,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:11,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:11,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... [2021-10-11 00:29:11,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:11,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:11,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:11,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:11,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:29:11,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:29:11,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:11,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:11,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:11,973 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 00:29:11,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:11 BoogieIcfgContainer [2021-10-11 00:29:11,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:11,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:11,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:11,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:11,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:11" (1/3) ... [2021-10-11 00:29:11,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d1ea97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:11, skipping insertion in model container [2021-10-11 00:29:11,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:11" (2/3) ... [2021-10-11 00:29:11,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d1ea97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:11, skipping insertion in model container [2021-10-11 00:29:11,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:11" (3/3) ... [2021-10-11 00:29:11,986 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2021-10-11 00:29:12,001 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:12,004 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:29:12,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:29:12,054 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:12,054 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:29:12,054 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:12,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:12,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:12,055 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:12,055 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:12,055 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 00:29:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:29:12,081 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:12,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:29:12,082 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:12,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:12,088 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2021-10-11 00:29:12,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:12,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503207501] [2021-10-11 00:29:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:12,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503207501] [2021-10-11 00:29:12,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:12,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:12,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611387903] [2021-10-11 00:29:12,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:29:12,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:12,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:29:12,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:29:12,300 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-10-11 00:29:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:12,317 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-11 00:29:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:29:12,319 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 00:29:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:12,339 INFO L225 Difference]: With dead ends: 19 [2021-10-11 00:29:12,342 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 00:29:12,345 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 [2021-10-11 00:29:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 00:29:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 00:29:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:29:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-11 00:29:12,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-10-11 00:29:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:12,381 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 00:29:12,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:29:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-11 00:29:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:29:12,382 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:12,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:29:12,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:29:12,383 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:12,387 INFO L82 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2021-10-11 00:29:12,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:12,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358961773] [2021-10-11 00:29:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:12,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358961773] [2021-10-11 00:29:12,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:12,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:12,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270444641] [2021-10-11 00:29:12,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:12,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:12,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:12,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:12,505 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2021-10-11 00:29:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:12,561 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-11 00:29:12,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:12,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 00:29:12,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:12,578 INFO L225 Difference]: With dead ends: 14 [2021-10-11 00:29:12,579 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 00:29:12,579 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 [2021-10-11 00:29:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 00:29:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 00:29:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 00:29:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-11 00:29:12,583 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-10-11 00:29:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:12,583 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-11 00:29:12,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:12,583 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-11 00:29:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:29:12,584 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:12,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:12,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:29:12,584 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:12,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:12,585 INFO L82 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2021-10-11 00:29:12,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:12,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225024172] [2021-10-11 00:29:12,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:12,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225024172] [2021-10-11 00:29:12,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:12,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:29:12,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434863750] [2021-10-11 00:29:12,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:12,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:12,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:12,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:12,656 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2021-10-11 00:29:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:12,676 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-11 00:29:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:12,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 00:29:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:12,677 INFO L225 Difference]: With dead ends: 19 [2021-10-11 00:29:12,677 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 00:29:12,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 00:29:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-11 00:29:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:29:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-11 00:29:12,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2021-10-11 00:29:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:12,682 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 00:29:12,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-11 00:29:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:29:12,682 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:12,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:12,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:29:12,683 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:12,684 INFO L82 PathProgramCache]: Analyzing trace with hash -275361512, now seen corresponding path program 1 times [2021-10-11 00:29:12,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:12,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019326375] [2021-10-11 00:29:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:12,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019326375] [2021-10-11 00:29:12,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670544538] [2021-10-11 00:29:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:29:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:13,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 00:29:13,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:13,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:29:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:13,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:13,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-11 00:29:13,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294900836] [2021-10-11 00:29:13,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:29:13,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:13,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:29:13,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:29:13,256 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 11 states. [2021-10-11 00:29:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:13,390 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-11 00:29:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:29:13,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2021-10-11 00:29:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:13,393 INFO L225 Difference]: With dead ends: 17 [2021-10-11 00:29:13,393 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 00:29:13,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:29:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 00:29:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 00:29:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 00:29:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-11 00:29:13,397 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2021-10-11 00:29:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:13,397 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 00:29:13,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:29:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-11 00:29:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:29:13,398 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:13,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:13,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:13,622 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:13,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1631725588, now seen corresponding path program 1 times [2021-10-11 00:29:13,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:13,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772405905] [2021-10-11 00:29:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:13,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772405905] [2021-10-11 00:29:13,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484149494] [2021-10-11 00:29:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:29:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:13,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:13,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:13,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:13,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-11 00:29:13,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322231070] [2021-10-11 00:29:13,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:13,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:13,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:13,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:13,798 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2021-10-11 00:29:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:13,842 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-11 00:29:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:13,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:29:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:13,845 INFO L225 Difference]: With dead ends: 22 [2021-10-11 00:29:13,845 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 00:29:13,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 00:29:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-11 00:29:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 00:29:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-11 00:29:13,855 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-10-11 00:29:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:13,856 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-11 00:29:13,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-11 00:29:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:29:13,858 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:13,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:14,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:14,070 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:14,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:14,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1688983890, now seen corresponding path program 2 times [2021-10-11 00:29:14,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:14,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472617916] [2021-10-11 00:29:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:14,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472617916] [2021-10-11 00:29:14,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173824883] [2021-10-11 00:29:14,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:29:14,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:29:14,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:14,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 00:29:14,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:14,422 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:29:14,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:29:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:14,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:14,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-10-11 00:29:14,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511465432] [2021-10-11 00:29:14,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 00:29:14,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:14,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 00:29:14,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:29:14,449 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 14 states. [2021-10-11 00:29:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:14,759 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-11 00:29:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:29:14,767 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2021-10-11 00:29:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:14,769 INFO L225 Difference]: With dead ends: 25 [2021-10-11 00:29:14,770 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 00:29:14,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:29:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 00:29:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 00:29:14,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:29:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-11 00:29:14,777 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-10-11 00:29:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:14,778 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-11 00:29:14,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 00:29:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-11 00:29:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:29:14,780 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:14,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:14,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:14,993 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1778778726, now seen corresponding path program 2 times [2021-10-11 00:29:14,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:14,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155014108] [2021-10-11 00:29:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:15,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155014108] [2021-10-11 00:29:15,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659027897] [2021-10-11 00:29:15,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:29:15,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:29:15,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:15,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:29:15,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:15,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:15,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-11 00:29:15,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87307618] [2021-10-11 00:29:15,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:29:15,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:15,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:29:15,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:29:15,150 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2021-10-11 00:29:15,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:15,185 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-11 00:29:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:15,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 00:29:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:15,188 INFO L225 Difference]: With dead ends: 26 [2021-10-11 00:29:15,188 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 00:29:15,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:29:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 00:29:15,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 00:29:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:29:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-11 00:29:15,193 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2021-10-11 00:29:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:15,193 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-11 00:29:15,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:29:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-11 00:29:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:29:15,194 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:15,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:15,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:15,410 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:15,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:15,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1928524372, now seen corresponding path program 3 times [2021-10-11 00:29:15,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:15,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644959404] [2021-10-11 00:29:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:15,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:15,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:15,494 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:15,494 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:29:15,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:29:15,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:29:15 BoogieIcfgContainer [2021-10-11 00:29:15,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:29:15,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:29:15,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:29:15,524 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:29:15,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:11" (3/4) ... [2021-10-11 00:29:15,527 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:29:15,591 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8498202-ead8-46c7-8bf0-a03678794136/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:29:15,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:29:15,593 INFO L168 Benchmark]: Toolchain (without parser) took 4360.36 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 56.0 MB in the beginning and 99.3 MB in the end (delta: -43.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:15,594 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 63.9 MB in the beginning and 63.9 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:15,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.39 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 55.9 MB in the beginning and 87.5 MB in the end (delta: -31.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:15,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.22 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 85.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:15,595 INFO L168 Benchmark]: Boogie Preprocessor took 34.89 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:15,596 INFO L168 Benchmark]: RCFGBuilder took 389.71 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 73.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:15,597 INFO L168 Benchmark]: TraceAbstraction took 3544.58 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 73.3 MB in the beginning and 101.4 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:15,597 INFO L168 Benchmark]: Witness Printer took 68.26 ms. Allocated memory is still 134.2 MB. Free memory was 101.4 MB in the beginning and 99.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:15,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 63.9 MB in the beginning and 63.9 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.39 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 55.9 MB in the beginning and 87.5 MB in the end (delta: -31.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.22 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 85.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.89 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 389.71 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 73.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3544.58 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 73.3 MB in the beginning and 101.4 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 68.26 ms. Allocated memory is still 134.2 MB. Free memory was 101.4 MB in the beginning and 99.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int i, n=__VERIFIER_nondet_uint(), sn=0; [L23] int i, n=__VERIFIER_nondet_uint(), sn=0; [L24] i=1 [L24] COND TRUE i<=n [L25] sn = sn + (2) [L26] COND FALSE !(i==4) [L24] i++ [L24] COND TRUE i<=n [L25] sn = sn + (2) [L26] COND FALSE !(i==4) [L24] i++ [L24] COND TRUE i<=n [L25] sn = sn + (2) [L26] COND FALSE !(i==4) [L24] i++ [L24] COND TRUE i<=n [L25] sn = sn + (2) [L26] COND TRUE i==4 [L26] sn=-10 [L24] i++ [L24] COND FALSE !(i<=n) [L15] COND TRUE !(cond) [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 23 SDslu, 85 SDs, 0 SdLazy, 225 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 5073 SizeOfPredicates, 9 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 17/47 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 incorrect! Received shutdown request...