./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/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 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-a4ecdab [2020-11-29 22:49:04,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:49:04,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:49:04,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:49:04,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:49:04,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:49:04,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:49:04,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:49:04,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:49:04,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:49:04,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:49:04,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:49:04,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:49:04,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:49:04,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:49:04,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:49:04,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:49:04,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:49:04,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:49:04,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:49:04,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:49:04,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:49:04,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:49:04,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:49:04,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:49:04,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:49:04,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:49:04,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:49:04,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:49:04,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:49:04,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:49:04,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:49:04,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:49:04,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:49:04,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:49:04,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:49:04,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:49:04,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:49:04,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:49:04,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:49:04,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:49:04,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:49:04,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:49:04,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:49:04,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:49:04,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:49:04,630 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:49:04,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:49:04,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:49:04,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:49:04,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:49:04,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:49:04,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:49:04,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:49:04,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:49:04,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:49:04,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:49:04,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:49:04,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:49:04,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:49:04,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:49:04,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:49:04,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:49:04,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:49:04,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:49:04,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:49:04,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:49:04,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:49:04,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:49:04,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:49:04,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:49:04,637 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_b6290b43-21f4-49b0-bd57-893948f9eb01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd48abfacd60a3a4485060da29ebb446d23ac13 [2020-11-29 22:49:04,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:49:04,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:49:04,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:49:04,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:49:04,954 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:49:04,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2020-11-29 22:49:05,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/data/eed87c5ec/a02e156f823e4938956590ec0b38863a/FLAG4d1897175 [2020-11-29 22:49:05,538 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:49:05,538 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2020-11-29 22:49:05,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/data/eed87c5ec/a02e156f823e4938956590ec0b38863a/FLAG4d1897175 [2020-11-29 22:49:05,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/data/eed87c5ec/a02e156f823e4938956590ec0b38863a [2020-11-29 22:49:05,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:49:05,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:49:05,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:49:05,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:49:05,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:49:05,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:49:05" (1/1) ... [2020-11-29 22:49:05,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a8f12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:05, skipping insertion in model container [2020-11-29 22:49:05,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:49:05" (1/1) ... [2020-11-29 22:49:05,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:49:05,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:49:06,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:49:06,119 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:49:06,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:49:06,160 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:49:06,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06 WrapperNode [2020-11-29 22:49:06,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:49:06,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:49:06,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:49:06,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:49:06,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:49:06,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:49:06,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:49:06,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:49:06,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... [2020-11-29 22:49:06,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:49:06,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:49:06,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:49:06,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:49:06,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/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 [2020-11-29 22:49:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:49:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:49:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:49:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:49:06,531 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:49:06,532 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 22:49:06,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:06 BoogieIcfgContainer [2020-11-29 22:49:06,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:49:06,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:49:06,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:49:06,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:49:06,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:49:05" (1/3) ... [2020-11-29 22:49:06,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c051bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:49:06, skipping insertion in model container [2020-11-29 22:49:06,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:06" (2/3) ... [2020-11-29 22:49:06,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c051bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:49:06, skipping insertion in model container [2020-11-29 22:49:06,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:06" (3/3) ... [2020-11-29 22:49:06,567 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2020-11-29 22:49:06,577 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:49:06,586 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:49:06,598 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:49:06,644 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:49:06,644 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:49:06,644 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:49:06,644 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:49:06,645 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:49:06,645 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:49:06,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:49:06,645 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:49:06,656 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 22:49:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:49:06,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:06,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:06,662 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash 531641672, now seen corresponding path program 1 times [2020-11-29 22:49:06,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:06,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638364521] [2020-11-29 22:49:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:06,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638364521] [2020-11-29 22:49:06,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:49:06,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:49:06,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448797452] [2020-11-29 22:49:06,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:49:06,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:49:06,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:49:06,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:49:06,812 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-29 22:49:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:06,827 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2020-11-29 22:49:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:49:06,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 22:49:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:06,836 INFO L225 Difference]: With dead ends: 24 [2020-11-29 22:49:06,836 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 22:49:06,839 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 [2020-11-29 22:49:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 22:49:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 22:49:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 22:49:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-29 22:49:06,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-11-29 22:49:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:06,870 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-29 22:49:06,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:49:06,870 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-29 22:49:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:49:06,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:06,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:06,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:49:06,871 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:06,872 INFO L82 PathProgramCache]: Analyzing trace with hash 216721011, now seen corresponding path program 1 times [2020-11-29 22:49:06,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:06,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066878491] [2020-11-29 22:49:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:06,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066878491] [2020-11-29 22:49:06,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:49:06,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:49:06,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898652626] [2020-11-29 22:49:06,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:49:06,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:49:06,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:49:06,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:49:06,984 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2020-11-29 22:49:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:07,037 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-11-29 22:49:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:49:07,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 22:49:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:07,039 INFO L225 Difference]: With dead ends: 18 [2020-11-29 22:49:07,039 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 22:49:07,040 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 [2020-11-29 22:49:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 22:49:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 22:49:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 22:49:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-29 22:49:07,043 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2020-11-29 22:49:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:07,044 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-29 22:49:07,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:49:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-29 22:49:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:49:07,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:07,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:07,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:49:07,045 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:07,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1820060357, now seen corresponding path program 1 times [2020-11-29 22:49:07,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:07,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086483391] [2020-11-29 22:49:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:07,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086483391] [2020-11-29 22:49:07,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:49:07,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:49:07,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611997250] [2020-11-29 22:49:07,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:49:07,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:49:07,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:49:07,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:49:07,115 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2020-11-29 22:49:07,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:07,154 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-29 22:49:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:49:07,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 22:49:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:07,158 INFO L225 Difference]: With dead ends: 23 [2020-11-29 22:49:07,158 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 22:49:07,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:49:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 22:49:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-29 22:49:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 22:49:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-29 22:49:07,162 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2020-11-29 22:49:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:07,162 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-29 22:49:07,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:49:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-29 22:49:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:49:07,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:07,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:07,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:49:07,163 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:07,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1665560313, now seen corresponding path program 1 times [2020-11-29 22:49:07,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:07,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492939017] [2020-11-29 22:49:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:07,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492939017] [2020-11-29 22:49:07,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670224217] [2020-11-29 22:49:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/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 [2020-11-29 22:49:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:07,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:49:07,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:49:07,594 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:49:07,599 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:49:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:07,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:49:07,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-11-29 22:49:07,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376151321] [2020-11-29 22:49:07,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:49:07,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:49:07,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:49:07,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:49:07,631 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 11 states. [2020-11-29 22:49:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:07,735 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-11-29 22:49:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:49:07,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-29 22:49:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:07,736 INFO L225 Difference]: With dead ends: 21 [2020-11-29 22:49:07,736 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 22:49:07,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:49:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 22:49:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 22:49:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 22:49:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-29 22:49:07,747 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-11-29 22:49:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:07,748 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-29 22:49:07,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:49:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-29 22:49:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:49:07,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:07,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:07,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:49:07,949 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:07,950 INFO L82 PathProgramCache]: Analyzing trace with hash 425228021, now seen corresponding path program 1 times [2020-11-29 22:49:07,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:07,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314061834] [2020-11-29 22:49:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:07,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314061834] [2020-11-29 22:49:07,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080829444] [2020-11-29 22:49:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/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 [2020-11-29 22:49:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:08,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:49:08,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:49:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:08,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:49:08,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-29 22:49:08,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630035611] [2020-11-29 22:49:08,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:49:08,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:49:08,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:49:08,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:49:08,070 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-11-29 22:49:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:08,098 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-11-29 22:49:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:49:08,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 22:49:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:08,099 INFO L225 Difference]: With dead ends: 26 [2020-11-29 22:49:08,099 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 22:49:08,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:49:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 22:49:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-29 22:49:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 22:49:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-29 22:49:08,103 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2020-11-29 22:49:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:08,103 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-29 22:49:08,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:49:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-29 22:49:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:49:08,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:08,104 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:08,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:49:08,305 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:08,305 INFO L82 PathProgramCache]: Analyzing trace with hash -384118605, now seen corresponding path program 2 times [2020-11-29 22:49:08,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:08,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488675074] [2020-11-29 22:49:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:08,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488675074] [2020-11-29 22:49:08,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631438371] [2020-11-29 22:49:08,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/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 [2020-11-29 22:49:08,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:49:08,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:49:08,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:49:08,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:49:08,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:49:08,672 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-29 22:49:08,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:49:08,677 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:49:08,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:49:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:08,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:49:08,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-11-29 22:49:08,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984879920] [2020-11-29 22:49:08,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:49:08,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:49:08,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:49:08,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:49:08,718 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 14 states. [2020-11-29 22:49:08,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:08,994 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-29 22:49:08,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:49:08,995 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-11-29 22:49:08,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:08,996 INFO L225 Difference]: With dead ends: 29 [2020-11-29 22:49:08,996 INFO L226 Difference]: Without dead ends: 21 [2020-11-29 22:49:08,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:49:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-29 22:49:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-29 22:49:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 22:49:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-29 22:49:09,000 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2020-11-29 22:49:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:09,001 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-29 22:49:09,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:49:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-29 22:49:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:49:09,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:09,001 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:09,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:49:09,218 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash -9370885, now seen corresponding path program 2 times [2020-11-29 22:49:09,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:09,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043728458] [2020-11-29 22:49:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:09,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043728458] [2020-11-29 22:49:09,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568258334] [2020-11-29 22:49:09,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/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 [2020-11-29 22:49:09,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:49:09,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:49:09,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:49:09,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:49:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:09,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:49:09,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 22:49:09,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18984062] [2020-11-29 22:49:09,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:49:09,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:49:09,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:49:09,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:49:09,361 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-11-29 22:49:09,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:09,404 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-29 22:49:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:49:09,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-29 22:49:09,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:09,407 INFO L225 Difference]: With dead ends: 30 [2020-11-29 22:49:09,407 INFO L226 Difference]: Without dead ends: 21 [2020-11-29 22:49:09,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:49:09,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-29 22:49:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-29 22:49:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 22:49:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-29 22:49:09,411 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-11-29 22:49:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:09,412 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-29 22:49:09,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:49:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-29 22:49:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:49:09,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:09,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:09,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:49:09,614 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2113949387, now seen corresponding path program 3 times [2020-11-29 22:49:09,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:09,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428406260] [2020-11-29 22:49:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:49:09,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:49:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:49:09,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:49:09,706 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:49:09,706 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:49:09,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 22:49:09,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:49:09 BoogieIcfgContainer [2020-11-29 22:49:09,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:49:09,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:49:09,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:49:09,749 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:49:09,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:06" (3/4) ... [2020-11-29 22:49:09,751 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:49:09,793 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b6290b43-21f4-49b0-bd57-893948f9eb01/bin/uautomizer/witness.graphml [2020-11-29 22:49:09,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:49:09,794 INFO L168 Benchmark]: Toolchain (without parser) took 3909.76 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 82.6 MB in the beginning and 107.0 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:49:09,795 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 68.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:49:09,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.68 ms. Allocated memory is still 109.1 MB. Free memory was 82.3 MB in the beginning and 86.6 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:09,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.49 ms. Allocated memory is still 109.1 MB. Free memory was 86.6 MB in the beginning and 85.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:09,797 INFO L168 Benchmark]: Boogie Preprocessor took 41.33 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 84.3 MB in the end (delta: 988.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:49:09,797 INFO L168 Benchmark]: RCFGBuilder took 290.54 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 73.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:09,798 INFO L168 Benchmark]: TraceAbstraction took 3206.87 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 72.7 MB in the beginning and 110.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:09,799 INFO L168 Benchmark]: Witness Printer took 44.27 ms. Allocated memory is still 132.1 MB. Free memory was 110.1 MB in the beginning and 107.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:09,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 68.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.68 ms. Allocated memory is still 109.1 MB. Free memory was 82.3 MB in the beginning and 86.6 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.49 ms. Allocated memory is still 109.1 MB. Free memory was 86.6 MB in the beginning and 85.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.33 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 84.3 MB in the end (delta: 988.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 290.54 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 73.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3206.87 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 72.7 MB in the beginning and 110.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 16.1 GB. * Witness Printer took 44.27 ms. Allocated memory is still 132.1 MB. Free memory was 110.1 MB in the beginning and 107.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sum01_bug02_sum01_bug02_base.case.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 27 SDslu, 109 SDs, 0 SdLazy, 179 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 6253 SizeOfPredicates, 12 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 35 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...