./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/rangesum.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a9e9e68a4ced07da63a78ebad1c2cc86cbb57dae .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 19:03:39,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:03:39,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:03:39,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:03:39,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:03:39,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:03:39,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:03:39,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:03:39,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:03:39,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:03:39,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:03:39,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:03:39,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:03:39,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:03:39,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:03:39,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:03:39,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:03:39,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:03:39,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:03:39,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:03:39,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:03:39,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:03:39,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:03:39,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:03:39,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:03:39,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:03:39,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:03:39,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:03:39,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:03:39,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:03:39,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:03:39,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:03:39,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:03:39,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:03:39,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:03:39,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:03:39,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:03:39,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:03:39,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:03:39,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:03:39,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:03:39,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:03:39,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:03:39,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:03:39,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:03:39,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:03:39,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:03:39,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:03:39,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:03:39,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:03:39,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:03:39,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:03:39,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:03:39,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:03:39,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:03:39,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:03:39,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:03:39,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:03:39,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:03:39,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:03:39,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:03:39,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:03:39,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:03:39,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:03:39,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:03:39,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:03:39,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:03:39,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:03:39,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:03:39,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:03:39,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:03:39,391 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9e9e68a4ced07da63a78ebad1c2cc86cbb57dae [2020-10-25 19:03:39,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:03:39,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:03:39,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:03:39,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:03:39,892 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:03:39,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum.i [2020-10-25 19:03:40,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b07818ac/42309125dea148eaaace9aaed344ee64/FLAG3f25fe66a [2020-10-25 19:03:40,737 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:03:40,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum.i [2020-10-25 19:03:40,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b07818ac/42309125dea148eaaace9aaed344ee64/FLAG3f25fe66a [2020-10-25 19:03:41,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b07818ac/42309125dea148eaaace9aaed344ee64 [2020-10-25 19:03:41,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:03:41,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:03:41,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:03:41,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:03:41,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:03:41,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e479e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41, skipping insertion in model container [2020-10-25 19:03:41,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:03:41,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:03:41,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:03:41,401 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:03:41,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:03:41,464 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:03:41,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41 WrapperNode [2020-10-25 19:03:41,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:03:41,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:03:41,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:03:41,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:03:41,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:03:41,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:03:41,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:03:41,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:03:41,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... [2020-10-25 19:03:41,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:03:41,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:03:41,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:03:41,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:03:41,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:03:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:03:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:03:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 19:03:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:03:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:03:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 19:03:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 19:03:42,563 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:03:42,564 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-25 19:03:42,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:03:42 BoogieIcfgContainer [2020-10-25 19:03:42,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:03:42,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:03:42,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:03:42,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:03:42,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:03:41" (1/3) ... [2020-10-25 19:03:42,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d73f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:03:42, skipping insertion in model container [2020-10-25 19:03:42,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:03:41" (2/3) ... [2020-10-25 19:03:42,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d73f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:03:42, skipping insertion in model container [2020-10-25 19:03:42,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:03:42" (3/3) ... [2020-10-25 19:03:42,586 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum.i [2020-10-25 19:03:42,602 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:03:42,609 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:03:42,626 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:03:42,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:03:42,663 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:03:42,664 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:03:42,664 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:03:42,664 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:03:42,664 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:03:42,665 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:03:42,665 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:03:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-25 19:03:42,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:03:42,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:42,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:42,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:42,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash -881245604, now seen corresponding path program 1 times [2020-10-25 19:03:42,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:42,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886459785] [2020-10-25 19:03:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:03:42,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886459785] [2020-10-25 19:03:42,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:03:42,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:03:42,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276594267] [2020-10-25 19:03:42,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 19:03:42,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:42,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 19:03:42,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:03:42,946 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-25 19:03:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:42,970 INFO L93 Difference]: Finished difference Result 61 states and 94 transitions. [2020-10-25 19:03:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 19:03:42,972 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-10-25 19:03:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:42,984 INFO L225 Difference]: With dead ends: 61 [2020-10-25 19:03:42,985 INFO L226 Difference]: Without dead ends: 28 [2020-10-25 19:03:42,988 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 [2020-10-25 19:03:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-25 19:03:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-25 19:03:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-25 19:03:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-25 19:03:43,058 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 19 [2020-10-25 19:03:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:43,060 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-25 19:03:43,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 19:03:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-25 19:03:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:03:43,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:43,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:43,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:03:43,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:43,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:43,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1266288958, now seen corresponding path program 1 times [2020-10-25 19:03:43,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:43,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348324555] [2020-10-25 19:03:43,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:03:43,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348324555] [2020-10-25 19:03:43,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:03:43,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:03:43,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821880614] [2020-10-25 19:03:43,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:03:43,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:03:43,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:03:43,178 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 3 states. [2020-10-25 19:03:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:43,260 INFO L93 Difference]: Finished difference Result 53 states and 73 transitions. [2020-10-25 19:03:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:03:43,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-25 19:03:43,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:43,263 INFO L225 Difference]: With dead ends: 53 [2020-10-25 19:03:43,263 INFO L226 Difference]: Without dead ends: 30 [2020-10-25 19:03:43,264 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 [2020-10-25 19:03:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-25 19:03:43,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-25 19:03:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-25 19:03:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-25 19:03:43,272 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 19 [2020-10-25 19:03:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:43,273 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-25 19:03:43,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:03:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-25 19:03:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 19:03:43,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:43,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:43,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:03:43,276 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:43,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:43,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1457317472, now seen corresponding path program 1 times [2020-10-25 19:03:43,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:43,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817888127] [2020-10-25 19:03:43,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:43,302 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:43,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22303293] [2020-10-25 19:03:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:03:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:43,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 19:03:43,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:03:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 19:03:43,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817888127] [2020-10-25 19:03:43,425 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:03:43,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22303293] [2020-10-25 19:03:43,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:03:43,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:03:43,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075262148] [2020-10-25 19:03:43,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:03:43,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:43,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:03:43,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:03:43,429 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 3 states. [2020-10-25 19:03:43,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:43,566 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2020-10-25 19:03:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:03:43,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-25 19:03:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:43,569 INFO L225 Difference]: With dead ends: 69 [2020-10-25 19:03:43,569 INFO L226 Difference]: Without dead ends: 51 [2020-10-25 19:03:43,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:03:43,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-25 19:03:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2020-10-25 19:03:43,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-25 19:03:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2020-10-25 19:03:43,579 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 21 [2020-10-25 19:03:43,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:43,580 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-10-25 19:03:43,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:03:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-10-25 19:03:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 19:03:43,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:43,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:43,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 19:03:43,796 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:43,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:43,798 INFO L82 PathProgramCache]: Analyzing trace with hash 479331490, now seen corresponding path program 1 times [2020-10-25 19:03:43,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:43,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118069313] [2020-10-25 19:03:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 19:03:43,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118069313] [2020-10-25 19:03:43,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:03:43,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:03:43,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387351416] [2020-10-25 19:03:43,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:03:43,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:43,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:03:43,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:03:43,865 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 4 states. [2020-10-25 19:03:43,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:43,974 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2020-10-25 19:03:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:03:43,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-25 19:03:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:43,976 INFO L225 Difference]: With dead ends: 81 [2020-10-25 19:03:43,976 INFO L226 Difference]: Without dead ends: 50 [2020-10-25 19:03:43,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:03:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-25 19:03:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-25 19:03:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-25 19:03:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2020-10-25 19:03:43,986 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 21 [2020-10-25 19:03:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:43,987 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2020-10-25 19:03:43,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:03:43,987 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2020-10-25 19:03:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 19:03:43,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:43,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:43,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:03:43,989 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:43,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1080672290, now seen corresponding path program 1 times [2020-10-25 19:03:43,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:43,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345813779] [2020-10-25 19:03:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 19:03:44,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345813779] [2020-10-25 19:03:44,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:03:44,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:03:44,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941103472] [2020-10-25 19:03:44,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:03:44,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:44,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:03:44,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:03:44,090 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand 4 states. [2020-10-25 19:03:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:44,157 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2020-10-25 19:03:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:03:44,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-25 19:03:44,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:44,159 INFO L225 Difference]: With dead ends: 65 [2020-10-25 19:03:44,159 INFO L226 Difference]: Without dead ends: 49 [2020-10-25 19:03:44,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:03:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-25 19:03:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-25 19:03:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-25 19:03:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2020-10-25 19:03:44,170 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 30 [2020-10-25 19:03:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:44,170 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2020-10-25 19:03:44,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:03:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2020-10-25 19:03:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-25 19:03:44,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:44,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:44,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:03:44,173 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:44,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:44,174 INFO L82 PathProgramCache]: Analyzing trace with hash -694882496, now seen corresponding path program 1 times [2020-10-25 19:03:44,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:44,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613114315] [2020-10-25 19:03:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-25 19:03:44,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613114315] [2020-10-25 19:03:44,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:03:44,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-25 19:03:44,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101507902] [2020-10-25 19:03:44,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 19:03:44,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 19:03:44,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:03:44,402 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand 8 states. [2020-10-25 19:03:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:45,220 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2020-10-25 19:03:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:03:45,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-25 19:03:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:45,222 INFO L225 Difference]: With dead ends: 119 [2020-10-25 19:03:45,222 INFO L226 Difference]: Without dead ends: 113 [2020-10-25 19:03:45,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:03:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-25 19:03:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 73. [2020-10-25 19:03:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-25 19:03:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2020-10-25 19:03:45,238 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 32 [2020-10-25 19:03:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:45,239 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2020-10-25 19:03:45,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 19:03:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2020-10-25 19:03:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-25 19:03:45,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:45,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:45,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:03:45,242 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:45,243 INFO L82 PathProgramCache]: Analyzing trace with hash 812915687, now seen corresponding path program 1 times [2020-10-25 19:03:45,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:45,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986841483] [2020-10-25 19:03:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:45,290 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:45,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541267198] [2020-10-25 19:03:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:03:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:45,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 19:03:45,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:03:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-25 19:03:45,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986841483] [2020-10-25 19:03:45,481 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:03:45,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541267198] [2020-10-25 19:03:45,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:03:45,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-25 19:03:45,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318431710] [2020-10-25 19:03:45,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:03:45,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:45,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:03:45,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:03:45,485 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand 4 states. [2020-10-25 19:03:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:45,585 INFO L93 Difference]: Finished difference Result 143 states and 193 transitions. [2020-10-25 19:03:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:03:45,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-25 19:03:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:45,590 INFO L225 Difference]: With dead ends: 143 [2020-10-25 19:03:45,590 INFO L226 Difference]: Without dead ends: 76 [2020-10-25 19:03:45,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:03:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-25 19:03:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-25 19:03:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-25 19:03:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 100 transitions. [2020-10-25 19:03:45,628 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 100 transitions. Word has length 35 [2020-10-25 19:03:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:45,629 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 100 transitions. [2020-10-25 19:03:45,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:03:45,632 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 100 transitions. [2020-10-25 19:03:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-25 19:03:45,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:45,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:45,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:45,839 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:45,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:45,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1827900151, now seen corresponding path program 2 times [2020-10-25 19:03:45,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:45,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174745688] [2020-10-25 19:03:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:45,866 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:45,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125926435] [2020-10-25 19:03:45,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:03:46,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 19:03:46,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:03:46,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 19:03:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:03:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-25 19:03:46,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174745688] [2020-10-25 19:03:46,371 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:03:46,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125926435] [2020-10-25 19:03:46,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:03:46,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-25 19:03:46,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126381608] [2020-10-25 19:03:46,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:03:46,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:46,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:03:46,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:03:46,374 INFO L87 Difference]: Start difference. First operand 75 states and 100 transitions. Second operand 5 states. [2020-10-25 19:03:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:46,515 INFO L93 Difference]: Finished difference Result 156 states and 212 transitions. [2020-10-25 19:03:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 19:03:46,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-25 19:03:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:46,517 INFO L225 Difference]: With dead ends: 156 [2020-10-25 19:03:46,517 INFO L226 Difference]: Without dead ends: 95 [2020-10-25 19:03:46,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:03:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-25 19:03:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2020-10-25 19:03:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-25 19:03:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2020-10-25 19:03:46,530 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 37 [2020-10-25 19:03:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:46,531 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2020-10-25 19:03:46,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:03:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2020-10-25 19:03:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-25 19:03:46,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:46,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:46,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:46,740 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:46,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1557952959, now seen corresponding path program 3 times [2020-10-25 19:03:46,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:46,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136265061] [2020-10-25 19:03:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:46,768 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:46,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565499924] [2020-10-25 19:03:46,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:03:46,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-25 19:03:46,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:03:46,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 19:03:46,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:03:47,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-25 19:03:47,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 19:03:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-25 19:03:47,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136265061] [2020-10-25 19:03:47,192 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:03:47,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565499924] [2020-10-25 19:03:47,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:03:47,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 19:03:47,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70034588] [2020-10-25 19:03:47,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:03:47,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:47,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:03:47,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:03:47,198 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand 6 states. [2020-10-25 19:03:47,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:47,466 INFO L93 Difference]: Finished difference Result 212 states and 274 transitions. [2020-10-25 19:03:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:03:47,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-25 19:03:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:47,472 INFO L225 Difference]: With dead ends: 212 [2020-10-25 19:03:47,473 INFO L226 Difference]: Without dead ends: 140 [2020-10-25 19:03:47,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:03:47,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-25 19:03:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 117. [2020-10-25 19:03:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-25 19:03:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2020-10-25 19:03:47,507 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 46 [2020-10-25 19:03:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:47,507 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2020-10-25 19:03:47,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:03:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2020-10-25 19:03:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-25 19:03:47,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:47,509 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:47,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:47,723 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:47,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1574251559, now seen corresponding path program 1 times [2020-10-25 19:03:47,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:47,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572914040] [2020-10-25 19:03:47,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:47,752 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:47,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431506314] [2020-10-25 19:03:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:47,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:03:47,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:03:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-25 19:03:47,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572914040] [2020-10-25 19:03:47,946 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:03:47,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431506314] [2020-10-25 19:03:47,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:03:47,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-25 19:03:47,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114864475] [2020-10-25 19:03:47,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:03:47,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:47,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:03:47,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:03:47,949 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand 9 states. [2020-10-25 19:03:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:48,151 INFO L93 Difference]: Finished difference Result 231 states and 291 transitions. [2020-10-25 19:03:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-25 19:03:48,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-25 19:03:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:48,154 INFO L225 Difference]: With dead ends: 231 [2020-10-25 19:03:48,154 INFO L226 Difference]: Without dead ends: 120 [2020-10-25 19:03:48,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-25 19:03:48,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-25 19:03:48,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-25 19:03:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-25 19:03:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2020-10-25 19:03:48,169 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 46 [2020-10-25 19:03:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:48,170 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2020-10-25 19:03:48,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:03:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2020-10-25 19:03:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-25 19:03:48,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:48,172 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:48,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-25 19:03:48,386 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:48,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1269618235, now seen corresponding path program 2 times [2020-10-25 19:03:48,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:48,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896365033] [2020-10-25 19:03:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:48,408 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:48,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214071368] [2020-10-25 19:03:48,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:48,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 19:03:48,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:03:48,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:03:48,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:03:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-25 19:03:48,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896365033] [2020-10-25 19:03:48,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:03:48,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214071368] [2020-10-25 19:03:48,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:03:48,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-25 19:03:48,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463042992] [2020-10-25 19:03:48,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:03:48,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:48,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:03:48,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:03:48,619 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand 9 states. [2020-10-25 19:03:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:48,896 INFO L93 Difference]: Finished difference Result 173 states and 213 transitions. [2020-10-25 19:03:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 19:03:48,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-25 19:03:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:48,899 INFO L225 Difference]: With dead ends: 173 [2020-10-25 19:03:48,899 INFO L226 Difference]: Without dead ends: 154 [2020-10-25 19:03:48,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-10-25 19:03:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-25 19:03:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 129. [2020-10-25 19:03:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-25 19:03:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2020-10-25 19:03:48,917 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 48 [2020-10-25 19:03:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:48,917 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2020-10-25 19:03:48,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:03:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2020-10-25 19:03:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-25 19:03:48,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:48,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:49,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:49,134 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:49,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:49,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1442698108, now seen corresponding path program 1 times [2020-10-25 19:03:49,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:49,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410420124] [2020-10-25 19:03:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:49,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:49,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525464162] [2020-10-25 19:03:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:03:49,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 19:03:49,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:03:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-25 19:03:49,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410420124] [2020-10-25 19:03:49,345 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:03:49,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525464162] [2020-10-25 19:03:49,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:03:49,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-25 19:03:49,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228552117] [2020-10-25 19:03:49,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 19:03:49,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:49,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 19:03:49,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:03:49,354 INFO L87 Difference]: Start difference. First operand 129 states and 159 transitions. Second operand 8 states. [2020-10-25 19:03:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:49,525 INFO L93 Difference]: Finished difference Result 183 states and 224 transitions. [2020-10-25 19:03:49,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:03:49,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-25 19:03:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:49,527 INFO L225 Difference]: With dead ends: 183 [2020-10-25 19:03:49,527 INFO L226 Difference]: Without dead ends: 138 [2020-10-25 19:03:49,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-25 19:03:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-25 19:03:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2020-10-25 19:03:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-25 19:03:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 165 transitions. [2020-10-25 19:03:49,543 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 165 transitions. Word has length 54 [2020-10-25 19:03:49,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:49,543 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 165 transitions. [2020-10-25 19:03:49,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 19:03:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 165 transitions. [2020-10-25 19:03:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-25 19:03:49,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:49,545 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:49,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:49,760 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:49,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:49,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1170804122, now seen corresponding path program 2 times [2020-10-25 19:03:49,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:49,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986718876] [2020-10-25 19:03:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:49,776 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:49,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576542242] [2020-10-25 19:03:49,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:49,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 19:03:49,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:03:49,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:03:49,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:03:49,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 19:03:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-25 19:03:50,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986718876] [2020-10-25 19:03:50,046 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:03:50,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576542242] [2020-10-25 19:03:50,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:03:50,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-25 19:03:50,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065871895] [2020-10-25 19:03:50,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:03:50,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:03:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:03:50,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:03:50,050 INFO L87 Difference]: Start difference. First operand 135 states and 165 transitions. Second operand 9 states. [2020-10-25 19:03:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:03:50,575 INFO L93 Difference]: Finished difference Result 394 states and 491 transitions. [2020-10-25 19:03:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-25 19:03:50,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-25 19:03:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:03:50,585 INFO L225 Difference]: With dead ends: 394 [2020-10-25 19:03:50,586 INFO L226 Difference]: Without dead ends: 280 [2020-10-25 19:03:50,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-25 19:03:50,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-25 19:03:50,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 216. [2020-10-25 19:03:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-25 19:03:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2020-10-25 19:03:50,615 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 56 [2020-10-25 19:03:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:03:50,616 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2020-10-25 19:03:50,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:03:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2020-10-25 19:03:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-25 19:03:50,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:03:50,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:03:50,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-25 19:03:50,835 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:03:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:03:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1978303706, now seen corresponding path program 1 times [2020-10-25 19:03:50,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:03:50,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695772771] [2020-10-25 19:03:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:03:50,854 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:03:50,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380244077] [2020-10-25 19:03:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:03:50,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:03:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:03:51,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:03:51,185 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:03:51,186 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:03:51,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:03:51,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:03:51 BoogieIcfgContainer [2020-10-25 19:03:51,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:03:51,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:03:51,492 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:03:51,492 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:03:51,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:03:42" (3/4) ... [2020-10-25 19:03:51,496 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:03:51,598 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:03:51,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:03:51,601 INFO L168 Benchmark]: Toolchain (without parser) took 10510.73 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 33.2 MB in the beginning and 54.6 MB in the end (delta: -21.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:03:51,602 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 39.8 MB. Free memory was 17.7 MB in the beginning and 17.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:03:51,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.34 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 35.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:03:51,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.87 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 33.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:03:51,603 INFO L168 Benchmark]: Boogie Preprocessor took 42.70 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 32.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:03:51,604 INFO L168 Benchmark]: RCFGBuilder took 997.89 ms. Allocated memory is still 56.6 MB. Free memory was 32.4 MB in the beginning and 25.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:03:51,605 INFO L168 Benchmark]: TraceAbstraction took 8922.04 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 25.6 MB in the beginning and 59.9 MB in the end (delta: -34.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-25 19:03:51,606 INFO L168 Benchmark]: Witness Printer took 106.89 ms. Allocated memory is still 100.7 MB. Free memory was 59.9 MB in the beginning and 54.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:03:51,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 39.8 MB. Free memory was 17.7 MB in the beginning and 17.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.34 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 35.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.87 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 33.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.70 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 32.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 997.89 ms. Allocated memory is still 56.6 MB. Free memory was 32.4 MB in the beginning and 25.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8922.04 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 25.6 MB in the beginning and 59.9 MB in the end (delta: -34.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Witness Printer took 106.89 ms. Allocated memory is still 100.7 MB. Free memory was 59.9 MB in the beginning and 54.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 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: [L15] int N; VAL [N=0] [L43] N = __VERIFIER_nondet_int() [L44] COND TRUE N > 1 [L45] int x[N]; [L17] int i; [L18] i = 0 VAL [N=3] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [N=3] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [N=3] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [N=3] [L18] COND FALSE !(i < N) VAL [N=3] [L47] int temp; [L48] int ret; [L49] int ret2; [L50] int ret5; [L25] int i; [L26] long long ret; [L27] ret = 0 [L28] int cnt = 0; [L29] i = 0 VAL [N=3] [L29] COND TRUE i < N VAL [N=3] [L30] COND FALSE !(i > N/2) VAL [N=3] [L29] i++ VAL [N=3] [L29] COND TRUE i < N VAL [N=3] [L30] COND FALSE !(i > N/2) VAL [N=3] [L29] i++ VAL [N=3] [L29] COND TRUE i < N VAL [N=3] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [N=3] [L29] i++ VAL [N=3] [L29] COND FALSE !(i < N) VAL [N=3] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [N=3] [L52] ret = rangesum(x) [L54] EXPR x[0] [L54] temp=x[0] [L54] EXPR x[1] [L54] x[0] = x[1] [L54] x[1] = temp [L25] int i; [L26] long long ret; [L27] ret = 0 [L28] int cnt = 0; [L29] i = 0 VAL [N=3] [L29] COND TRUE i < N VAL [N=3] [L30] COND FALSE !(i > N/2) VAL [N=3] [L29] i++ VAL [N=3] [L29] COND TRUE i < N VAL [N=3] [L30] COND FALSE !(i > N/2) VAL [N=3] [L29] i++ VAL [N=3] [L29] COND TRUE i < N VAL [N=3] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [N=3] [L29] i++ VAL [N=3] [L29] COND FALSE !(i < N) VAL [N=3] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [N=3] [L55] ret2 = rangesum(x) [L56] EXPR x[0] [L56] temp=x[0] [L57] int i =0 ; VAL [N=3] [L57] COND TRUE i N/2) VAL [N=3] [L29] i++ VAL [N=3] [L29] COND TRUE i < N VAL [N=3] [L30] COND FALSE !(i > N/2) VAL [N=3] [L29] i++ VAL [N=3] [L29] COND TRUE i < N VAL [N=3] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [N=3] [L29] i++ VAL [N=3] [L29] COND FALSE !(i < N) VAL [N=3] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [N=3] [L61] ret5 = rangesum(x) [L63] COND TRUE ret != ret2 || ret !=ret5 [L12] COND FALSE !(0) VAL [N=3] [L12] __assert_fail ("0", "rangesum.c", 17, __extension__ __PRETTY_FUNCTION__) VAL [N=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.7s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 366 SDtfs, 612 SDslu, 550 SDs, 0 SdLazy, 785 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 177 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 520 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 50008 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1398 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 179/213 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...