./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.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/array-examples/data_structures_set_multi_proc_trivial_ground.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 dc63a805379d435830d30b53773a27b22aa93e78 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 18:49:52,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 18:49:52,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 18:49:52,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 18:49:52,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 18:49:52,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 18:49:52,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 18:49:52,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 18:49:52,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 18:49:52,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 18:49:52,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 18:49:52,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 18:49:52,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 18:49:52,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 18:49:52,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 18:49:52,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 18:49:52,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 18:49:52,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 18:49:52,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 18:49:52,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 18:49:52,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 18:49:52,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 18:49:52,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 18:49:52,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 18:49:52,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 18:49:52,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 18:49:52,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 18:49:52,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 18:49:52,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 18:49:52,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 18:49:52,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 18:49:52,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 18:49:52,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 18:49:52,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 18:49:52,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 18:49:52,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 18:49:52,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 18:49:52,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 18:49:52,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 18:49:52,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 18:49:52,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 18:49:52,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 18:49:52,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 18:49:52,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 18:49:52,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 18:49:52,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 18:49:52,596 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 18:49:52,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 18:49:52,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 18:49:52,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 18:49:52,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 18:49:52,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 18:49:52,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 18:49:52,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 18:49:52,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 18:49:52,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 18:49:52,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 18:49:52,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 18:49:52,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 18:49:52,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 18:49:52,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 18:49:52,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 18:49:52,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 18:49:52,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 18:49:52,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 18:49:52,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 18:49:52,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 18:49:52,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 18:49:52,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 18:49:52,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 18:49:52,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 18:49:52,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc63a805379d435830d30b53773a27b22aa93e78 [2020-10-25 18:49:53,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 18:49:53,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 18:49:53,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 18:49:53,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 18:49:53,107 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 18:49:53,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-10-25 18:49:53,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc38888e1/13e863a6e057449d809b6e2dd801e896/FLAG4a2698f96 [2020-10-25 18:49:53,847 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 18:49:53,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-10-25 18:49:53,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc38888e1/13e863a6e057449d809b6e2dd801e896/FLAG4a2698f96 [2020-10-25 18:49:54,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc38888e1/13e863a6e057449d809b6e2dd801e896 [2020-10-25 18:49:54,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 18:49:54,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 18:49:54,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 18:49:54,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 18:49:54,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 18:49:54,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5733508b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54, skipping insertion in model container [2020-10-25 18:49:54,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 18:49:54,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 18:49:54,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 18:49:54,445 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 18:49:54,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 18:49:54,492 INFO L208 MainTranslator]: Completed translation [2020-10-25 18:49:54,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54 WrapperNode [2020-10-25 18:49:54,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 18:49:54,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 18:49:54,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 18:49:54,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 18:49:54,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 18:49:54,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 18:49:54,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 18:49:54,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 18:49:54,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (1/1) ... [2020-10-25 18:49:54,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 18:49:54,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 18:49:54,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 18:49:54,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 18:49:54,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (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 18:49:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 18:49:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 18:49:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 18:49:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 18:49:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 18:49:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 18:49:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 18:49:55,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 18:49:55,352 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-25 18:49:55,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 06:49:55 BoogieIcfgContainer [2020-10-25 18:49:55,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 18:49:55,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 18:49:55,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 18:49:55,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 18:49:55,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 06:49:54" (1/3) ... [2020-10-25 18:49:55,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c91ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 06:49:55, skipping insertion in model container [2020-10-25 18:49:55,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 06:49:54" (2/3) ... [2020-10-25 18:49:55,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c91ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 06:49:55, skipping insertion in model container [2020-10-25 18:49:55,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 06:49:55" (3/3) ... [2020-10-25 18:49:55,366 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-10-25 18:49:55,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 18:49:55,388 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 18:49:55,402 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 18:49:55,432 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 18:49:55,432 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 18:49:55,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 18:49:55,433 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 18:49:55,433 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 18:49:55,433 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 18:49:55,433 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 18:49:55,433 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 18:49:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-25 18:49:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 18:49:55,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 18:49:55,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 18:49:55,460 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 18:49:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 18:49:55,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1973576694, now seen corresponding path program 1 times [2020-10-25 18:49:55,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 18:49:55,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221056990] [2020-10-25 18:49:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 18:49:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:55,693 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 18:49:55,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221056990] [2020-10-25 18:49:55,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 18:49:55,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 18:49:55,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570961616] [2020-10-25 18:49:55,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 18:49:55,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 18:49:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 18:49:55,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 18:49:55,726 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-10-25 18:49:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 18:49:55,883 INFO L93 Difference]: Finished difference Result 158 states and 237 transitions. [2020-10-25 18:49:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 18:49:55,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-25 18:49:55,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 18:49:55,923 INFO L225 Difference]: With dead ends: 158 [2020-10-25 18:49:55,924 INFO L226 Difference]: Without dead ends: 97 [2020-10-25 18:49:55,935 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 18:49:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-25 18:49:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 51. [2020-10-25 18:49:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-25 18:49:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-25 18:49:55,995 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 10 [2020-10-25 18:49:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 18:49:55,996 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-25 18:49:55,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 18:49:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-25 18:49:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 18:49:55,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 18:49:55,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 18:49:55,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 18:49:56,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 18:49:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 18:49:56,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1318379128, now seen corresponding path program 1 times [2020-10-25 18:49:56,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 18:49:56,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209298249] [2020-10-25 18:49:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 18:49:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 18:49:56,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209298249] [2020-10-25 18:49:56,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461890578] [2020-10-25 18:49:56,057 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 18:49:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:56,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 18:49:56,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 18:49:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 18:49:56,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 18:49:56,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 18:49:56,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427678813] [2020-10-25 18:49:56,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 18:49:56,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 18:49:56,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 18:49:56,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 18:49:56,200 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 5 states. [2020-10-25 18:49:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 18:49:56,332 INFO L93 Difference]: Finished difference Result 190 states and 232 transitions. [2020-10-25 18:49:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 18:49:56,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-25 18:49:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 18:49:56,335 INFO L225 Difference]: With dead ends: 190 [2020-10-25 18:49:56,335 INFO L226 Difference]: Without dead ends: 144 [2020-10-25 18:49:56,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 18:49:56,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-25 18:49:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 53. [2020-10-25 18:49:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-25 18:49:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-25 18:49:56,347 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 12 [2020-10-25 18:49:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 18:49:56,347 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-25 18:49:56,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 18:49:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-25 18:49:56,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 18:49:56,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 18:49:56,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 18:49:56,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 18:49:56,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 18:49:56,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 18:49:56,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1261256582, now seen corresponding path program 2 times [2020-10-25 18:49:56,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 18:49:56,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390392064] [2020-10-25 18:49:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 18:49:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:56,629 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 18:49:56,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390392064] [2020-10-25 18:49:56,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 18:49:56,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 18:49:56,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797057034] [2020-10-25 18:49:56,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 18:49:56,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 18:49:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 18:49:56,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 18:49:56,638 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 4 states. [2020-10-25 18:49:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 18:49:56,723 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2020-10-25 18:49:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 18:49:56,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-25 18:49:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 18:49:56,724 INFO L225 Difference]: With dead ends: 102 [2020-10-25 18:49:56,725 INFO L226 Difference]: Without dead ends: 55 [2020-10-25 18:49:56,727 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 18:49:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-25 18:49:56,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-25 18:49:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-25 18:49:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-25 18:49:56,738 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 14 [2020-10-25 18:49:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 18:49:56,738 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-25 18:49:56,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 18:49:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-25 18:49:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 18:49:56,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 18:49:56,741 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] [2020-10-25 18:49:56,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 18:49:56,742 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 18:49:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 18:49:56,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1032428012, now seen corresponding path program 1 times [2020-10-25 18:49:56,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 18:49:56,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871223981] [2020-10-25 18:49:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 18:49:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:56,799 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 18:49:56,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871223981] [2020-10-25 18:49:56,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 18:49:56,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 18:49:56,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048144017] [2020-10-25 18:49:56,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 18:49:56,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 18:49:56,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 18:49:56,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 18:49:56,802 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 3 states. [2020-10-25 18:49:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 18:49:56,828 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2020-10-25 18:49:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 18:49:56,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-25 18:49:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 18:49:56,830 INFO L225 Difference]: With dead ends: 121 [2020-10-25 18:49:56,830 INFO L226 Difference]: Without dead ends: 79 [2020-10-25 18:49:56,831 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 18:49:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-25 18:49:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2020-10-25 18:49:56,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-25 18:49:56,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-10-25 18:49:56,839 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 25 [2020-10-25 18:49:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 18:49:56,839 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-10-25 18:49:56,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 18:49:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-10-25 18:49:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-25 18:49:56,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 18:49:56,841 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] [2020-10-25 18:49:56,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 18:49:56,841 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 18:49:56,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 18:49:56,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1828353390, now seen corresponding path program 1 times [2020-10-25 18:49:56,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 18:49:56,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493776715] [2020-10-25 18:49:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 18:49:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 18:49:56,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493776715] [2020-10-25 18:49:56,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007241588] [2020-10-25 18:49:56,885 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 18:49:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:56,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 18:49:56,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 18:49:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 18:49:56,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 18:49:56,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-10-25 18:49:56,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693600328] [2020-10-25 18:49:56,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 18:49:56,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 18:49:56,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 18:49:56,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-25 18:49:56,994 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 7 states. [2020-10-25 18:49:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 18:49:57,258 INFO L93 Difference]: Finished difference Result 348 states and 432 transitions. [2020-10-25 18:49:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-25 18:49:57,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-25 18:49:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 18:49:57,263 INFO L225 Difference]: With dead ends: 348 [2020-10-25 18:49:57,263 INFO L226 Difference]: Without dead ends: 300 [2020-10-25 18:49:57,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-10-25 18:49:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-25 18:49:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 76. [2020-10-25 18:49:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-25 18:49:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2020-10-25 18:49:57,287 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 27 [2020-10-25 18:49:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 18:49:57,288 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2020-10-25 18:49:57,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 18:49:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2020-10-25 18:49:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 18:49:57,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 18:49:57,289 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-25 18:49:57,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 18:49:57,504 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 18:49:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 18:49:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash 176400846, now seen corresponding path program 2 times [2020-10-25 18:49:57,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 18:49:57,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663998773] [2020-10-25 18:49:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 18:49:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-25 18:49:57,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663998773] [2020-10-25 18:49:57,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 18:49:57,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 18:49:57,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748855649] [2020-10-25 18:49:57,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 18:49:57,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 18:49:57,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 18:49:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 18:49:57,632 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand 4 states. [2020-10-25 18:49:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 18:49:57,677 INFO L93 Difference]: Finished difference Result 151 states and 186 transitions. [2020-10-25 18:49:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 18:49:57,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-25 18:49:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 18:49:57,679 INFO L225 Difference]: With dead ends: 151 [2020-10-25 18:49:57,679 INFO L226 Difference]: Without dead ends: 110 [2020-10-25 18:49:57,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 18:49:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-25 18:49:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 79. [2020-10-25 18:49:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-25 18:49:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-25 18:49:57,702 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 31 [2020-10-25 18:49:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 18:49:57,703 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-25 18:49:57,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 18:49:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-25 18:49:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 18:49:57,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 18:49:57,706 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-25 18:49:57,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 18:49:57,707 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 18:49:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 18:49:57,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1925275268, now seen corresponding path program 1 times [2020-10-25 18:49:57,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 18:49:57,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860618698] [2020-10-25 18:49:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 18:49:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 18:49:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-25 18:49:57,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860618698] [2020-10-25 18:49:57,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 18:49:57,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 18:49:57,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530655125] [2020-10-25 18:49:57,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 18:49:57,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 18:49:57,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 18:49:57,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 18:49:57,791 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 4 states. [2020-10-25 18:49:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 18:49:57,814 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2020-10-25 18:49:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 18:49:57,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-25 18:49:57,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 18:49:57,820 INFO L225 Difference]: With dead ends: 88 [2020-10-25 18:49:57,820 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 18:49:57,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 18:49:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 18:49:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 18:49:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 18:49:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 18:49:57,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-10-25 18:49:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 18:49:57,822 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 18:49:57,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 18:49:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 18:49:57,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 18:49:57,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 18:49:57,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 18:49:58,015 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,015 INFO L274 CegarLoopResult]: For program point L52(lines 52 54) no Hoare annotation was computed. [2020-10-25 18:49:58,015 INFO L274 CegarLoopResult]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2020-10-25 18:49:58,016 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 18:49:58,016 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 18:49:58,016 INFO L274 CegarLoopResult]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2020-10-25 18:49:58,016 INFO L270 CegarLoopResult]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (= ULTIMATE.start_main_~x~0 0)) [2020-10-25 18:49:58,016 INFO L274 CegarLoopResult]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2020-10-25 18:49:58,016 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,016 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,016 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,017 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,017 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,017 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,017 INFO L274 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,017 INFO L274 CegarLoopResult]: For program point L12-10(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,017 INFO L274 CegarLoopResult]: For program point L12-11(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,017 INFO L274 CegarLoopResult]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2020-10-25 18:49:58,017 INFO L270 CegarLoopResult]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2020-10-25 18:49:58,017 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L13-7(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L13-8(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L13-9(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L13-11(line 13) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2020-10-25 18:49:58,018 INFO L274 CegarLoopResult]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2020-10-25 18:49:58,019 INFO L270 CegarLoopResult]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0)) [2020-10-25 18:49:58,019 INFO L270 CegarLoopResult]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0)) [2020-10-25 18:49:58,019 INFO L274 CegarLoopResult]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2020-10-25 18:49:58,019 INFO L274 CegarLoopResult]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2020-10-25 18:49:58,019 INFO L270 CegarLoopResult]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (= ULTIMATE.start_main_~x~0 0)) [2020-10-25 18:49:58,019 INFO L274 CegarLoopResult]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2020-10-25 18:49:58,019 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-10-25 18:49:58,019 INFO L270 CegarLoopResult]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (= ULTIMATE.start_main_~x~0 0)) [2020-10-25 18:49:58,020 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-10-25 18:49:58,020 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-25 18:49:58,020 INFO L274 CegarLoopResult]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2020-10-25 18:49:58,020 INFO L270 CegarLoopResult]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2020-10-25 18:49:58,024 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2020-10-25 18:49:58,024 INFO L270 CegarLoopResult]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2020-10-25 18:49:58,024 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 18:49:58,024 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,024 INFO L277 CegarLoopResult]: At program point L66(lines 27 67) the Hoare annotation is: true [2020-10-25 18:49:58,024 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 18:49:58,025 INFO L274 CegarLoopResult]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2020-10-25 18:49:58,025 INFO L270 CegarLoopResult]: At program point L33-3(lines 33 36) the Hoare annotation is: (= ULTIMATE.start_main_~n~0 0) [2020-10-25 18:49:58,025 INFO L274 CegarLoopResult]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2020-10-25 18:49:58,025 INFO L270 CegarLoopResult]: At program point L25(lines 20 26) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= |ULTIMATE.start_elem_exists_#res| 0) (= ULTIMATE.start_elem_exists_~size 0)) [2020-10-25 18:49:58,025 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-25 18:49:58,025 INFO L270 CegarLoopResult]: At program point L18(lines 16 19) the Hoare annotation is: false [2020-10-25 18:49:58,025 INFO L274 CegarLoopResult]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2020-10-25 18:49:58,026 INFO L270 CegarLoopResult]: At program point L51-3(lines 51 60) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~n~0 0)) (.cse1 (= ULTIMATE.start_main_~x~0 0))) (or (and .cse0 .cse1 (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~v~0 0)))) [2020-10-25 18:49:58,026 INFO L274 CegarLoopResult]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2020-10-25 18:49:58,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 06:49:58 BoogieIcfgContainer [2020-10-25 18:49:58,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 18:49:58,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 18:49:58,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 18:49:58,048 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 18:49:58,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 06:49:55" (3/4) ... [2020-10-25 18:49:58,052 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 18:49:58,066 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-10-25 18:49:58,066 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-25 18:49:58,067 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 18:49:58,067 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 18:49:58,101 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((n == 0 && x == 0) && i == 0) && \result == 0) && size == 0 [2020-10-25 18:49:58,140 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 18:49:58,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 18:49:58,142 INFO L168 Benchmark]: Toolchain (without parser) took 3969.99 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 19.7 MB in the beginning and 37.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-10-25 18:49:58,143 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 24.5 MB in the beginning and 24.4 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 18:49:58,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.05 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 19.9 MB in the end (delta: -768.0 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 18:49:58,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.28 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 18.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 18:49:58,144 INFO L168 Benchmark]: Boogie Preprocessor took 38.77 ms. Allocated memory is still 41.9 MB. Free memory was 18.0 MB in the beginning and 16.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 18:49:58,145 INFO L168 Benchmark]: RCFGBuilder took 770.00 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 16.4 MB in the beginning and 27.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-10-25 18:49:58,145 INFO L168 Benchmark]: TraceAbstraction took 2690.47 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.9 MB in the beginning and 41.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-10-25 18:49:58,146 INFO L168 Benchmark]: Witness Printer took 92.58 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 37.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 18:49:58,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 24.5 MB in the beginning and 24.4 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.05 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 19.9 MB in the end (delta: -768.0 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.28 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 18.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.77 ms. Allocated memory is still 41.9 MB. Free memory was 18.0 MB in the beginning and 16.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 770.00 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 16.4 MB in the beginning and 27.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2690.47 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.9 MB in the beginning and 41.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * Witness Printer took 92.58 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 37.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((n == 0 && x == 0) && i == 0) && size == 0) || ((n == 0 && x == 0) && v == 0) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((n == 0 && x == 0) && i == 0) && size == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n == 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((n == 0 && x == 0) && i == 0) && size == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((n == 0 && x == 0) && i == 0) && \result == 0) && size == 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 312 SDtfs, 728 SDslu, 512 SDs, 0 SdLazy, 220 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 417 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 29 NumberOfFragments, 95 HoareAnnotationTreeSize, 13 FomulaSimplifications, 454 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 6388 SizeOfPredicates, 2 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 39/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...