./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-19 21:35:15,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 21:35:15,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 21:35:15,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 21:35:15,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 21:35:15,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 21:35:15,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 21:35:15,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 21:35:15,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 21:35:15,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 21:35:15,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 21:35:15,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 21:35:15,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 21:35:15,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 21:35:15,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 21:35:15,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 21:35:15,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 21:35:15,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 21:35:15,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 21:35:15,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 21:35:15,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 21:35:15,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 21:35:15,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 21:35:15,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 21:35:15,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 21:35:15,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 21:35:15,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 21:35:15,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 21:35:15,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 21:35:15,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 21:35:15,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 21:35:15,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 21:35:15,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 21:35:15,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 21:35:15,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 21:35:15,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 21:35:15,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 21:35:15,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 21:35:15,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 21:35:15,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 21:35:15,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 21:35:15,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 21:35:15,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 21:35:15,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 21:35:15,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 21:35:15,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 21:35:15,317 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 21:35:15,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 21:35:15,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 21:35:15,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 21:35:15,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 21:35:15,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 21:35:15,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 21:35:15,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 21:35:15,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 21:35:15,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 21:35:15,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 21:35:15,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 21:35:15,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 21:35:15,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 21:35:15,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 21:35:15,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 21:35:15,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 21:35:15,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 21:35:15,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 21:35:15,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 21:35:15,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 21:35:15,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 21:35:15,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 21:35:15,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 21:35:15,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 21:35:15,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2020-10-19 21:35:15,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 21:35:15,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 21:35:15,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 21:35:15,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 21:35:15,595 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 21:35:15,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-10-19 21:35:15,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53ef6a4c/b997adc9247742abb01d32cba207ce8d/FLAG84bbd9387 [2020-10-19 21:35:16,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 21:35:16,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-10-19 21:35:16,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53ef6a4c/b997adc9247742abb01d32cba207ce8d/FLAG84bbd9387 [2020-10-19 21:35:16,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53ef6a4c/b997adc9247742abb01d32cba207ce8d [2020-10-19 21:35:16,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 21:35:16,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 21:35:16,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 21:35:16,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 21:35:16,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 21:35:16,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205cc632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16, skipping insertion in model container [2020-10-19 21:35:16,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 21:35:16,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 21:35:16,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 21:35:16,730 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 21:35:16,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 21:35:16,784 INFO L208 MainTranslator]: Completed translation [2020-10-19 21:35:16,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16 WrapperNode [2020-10-19 21:35:16,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 21:35:16,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 21:35:16,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 21:35:16,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 21:35:16,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 21:35:16,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 21:35:16,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 21:35:16,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 21:35:16,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (1/1) ... [2020-10-19 21:35:16,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 21:35:16,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 21:35:16,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 21:35:16,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 21:35:16,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (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 [2020-10-19 21:35:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 21:35:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 21:35:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 21:35:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 21:35:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 21:35:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 21:35:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 21:35:17,370 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 21:35:17,371 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-19 21:35:17,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 09:35:17 BoogieIcfgContainer [2020-10-19 21:35:17,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 21:35:17,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 21:35:17,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 21:35:17,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 21:35:17,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 09:35:16" (1/3) ... [2020-10-19 21:35:17,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2304b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 09:35:17, skipping insertion in model container [2020-10-19 21:35:17,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 09:35:16" (2/3) ... [2020-10-19 21:35:17,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2304b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 09:35:17, skipping insertion in model container [2020-10-19 21:35:17,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 09:35:17" (3/3) ... [2020-10-19 21:35:17,386 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-10-19 21:35:17,398 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 21:35:17,407 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-19 21:35:17,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-19 21:35:17,441 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 21:35:17,441 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 21:35:17,441 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 21:35:17,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 21:35:17,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 21:35:17,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 21:35:17,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 21:35:17,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 21:35:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-19 21:35:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 21:35:17,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 21:35:17,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 21:35:17,469 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 21:35:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 21:35:17,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1973576694, now seen corresponding path program 1 times [2020-10-19 21:35:17,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 21:35:17,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069427340] [2020-10-19 21:35:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 21:35:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 21:35:17,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069427340] [2020-10-19 21:35:17,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 21:35:17,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 21:35:17,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603557979] [2020-10-19 21:35:17,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 21:35:17,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 21:35:17,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 21:35:17,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 21:35:17,703 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-10-19 21:35:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 21:35:17,842 INFO L93 Difference]: Finished difference Result 158 states and 237 transitions. [2020-10-19 21:35:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 21:35:17,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 21:35:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 21:35:17,866 INFO L225 Difference]: With dead ends: 158 [2020-10-19 21:35:17,866 INFO L226 Difference]: Without dead ends: 97 [2020-10-19 21:35:17,871 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 [2020-10-19 21:35:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-19 21:35:17,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 51. [2020-10-19 21:35:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-19 21:35:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-19 21:35:17,945 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 10 [2020-10-19 21:35:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 21:35:17,946 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-19 21:35:17,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 21:35:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-19 21:35:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 21:35:17,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 21:35:17,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 21:35:17,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 21:35:17,950 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 21:35:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 21:35:17,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1318379128, now seen corresponding path program 1 times [2020-10-19 21:35:17,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 21:35:17,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642599736] [2020-10-19 21:35:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 21:35:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 21:35:18,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642599736] [2020-10-19 21:35:18,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118404689] [2020-10-19 21:35:18,046 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 [2020-10-19 21:35:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:18,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 21:35:18,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 21:35:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 21:35:18,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 21:35:18,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-19 21:35:18,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961036455] [2020-10-19 21:35:18,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 21:35:18,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 21:35:18,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 21:35:18,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 21:35:18,231 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 5 states. [2020-10-19 21:35:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 21:35:18,375 INFO L93 Difference]: Finished difference Result 190 states and 232 transitions. [2020-10-19 21:35:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 21:35:18,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 21:35:18,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 21:35:18,379 INFO L225 Difference]: With dead ends: 190 [2020-10-19 21:35:18,380 INFO L226 Difference]: Without dead ends: 144 [2020-10-19 21:35:18,381 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 [2020-10-19 21:35:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-19 21:35:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 53. [2020-10-19 21:35:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-19 21:35:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-19 21:35:18,393 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 12 [2020-10-19 21:35:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 21:35:18,394 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-19 21:35:18,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 21:35:18,394 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-19 21:35:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 21:35:18,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 21:35:18,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 21:35:18,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-19 21:35:18,610 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 21:35:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 21:35:18,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1261256582, now seen corresponding path program 2 times [2020-10-19 21:35:18,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 21:35:18,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917137449] [2020-10-19 21:35:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 21:35:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 21:35:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917137449] [2020-10-19 21:35:18,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 21:35:18,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 21:35:18,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886077031] [2020-10-19 21:35:18,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 21:35:18,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 21:35:18,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 21:35:18,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 21:35:18,687 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 4 states. [2020-10-19 21:35:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 21:35:18,745 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2020-10-19 21:35:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 21:35:18,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-19 21:35:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 21:35:18,747 INFO L225 Difference]: With dead ends: 102 [2020-10-19 21:35:18,747 INFO L226 Difference]: Without dead ends: 55 [2020-10-19 21:35:18,748 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 [2020-10-19 21:35:18,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-19 21:35:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-19 21:35:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-19 21:35:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-19 21:35:18,756 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 14 [2020-10-19 21:35:18,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 21:35:18,756 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-19 21:35:18,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 21:35:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-19 21:35:18,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 21:35:18,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 21:35:18,758 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] [2020-10-19 21:35:18,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 21:35:18,759 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 21:35:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 21:35:18,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1032428012, now seen corresponding path program 1 times [2020-10-19 21:35:18,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 21:35:18,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645150888] [2020-10-19 21:35:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 21:35:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 21:35:18,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645150888] [2020-10-19 21:35:18,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 21:35:18,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 21:35:18,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377115598] [2020-10-19 21:35:18,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 21:35:18,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 21:35:18,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 21:35:18,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 21:35:18,816 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 3 states. [2020-10-19 21:35:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 21:35:18,849 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2020-10-19 21:35:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 21:35:18,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-19 21:35:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 21:35:18,851 INFO L225 Difference]: With dead ends: 121 [2020-10-19 21:35:18,851 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 21:35:18,852 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 [2020-10-19 21:35:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 21:35:18,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2020-10-19 21:35:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-19 21:35:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-10-19 21:35:18,861 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 25 [2020-10-19 21:35:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 21:35:18,861 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-10-19 21:35:18,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 21:35:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-10-19 21:35:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 21:35:18,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 21:35:18,863 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] [2020-10-19 21:35:18,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 21:35:18,864 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 21:35:18,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 21:35:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1828353390, now seen corresponding path program 1 times [2020-10-19 21:35:18,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 21:35:18,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487580997] [2020-10-19 21:35:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 21:35:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 21:35:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487580997] [2020-10-19 21:35:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119367681] [2020-10-19 21:35:18,919 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 [2020-10-19 21:35:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:18,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 21:35:18,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 21:35:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 21:35:19,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 21:35:19,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-10-19 21:35:19,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573027041] [2020-10-19 21:35:19,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 21:35:19,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 21:35:19,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 21:35:19,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 21:35:19,035 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 7 states. [2020-10-19 21:35:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 21:35:19,336 INFO L93 Difference]: Finished difference Result 348 states and 432 transitions. [2020-10-19 21:35:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 21:35:19,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-19 21:35:19,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 21:35:19,341 INFO L225 Difference]: With dead ends: 348 [2020-10-19 21:35:19,341 INFO L226 Difference]: Without dead ends: 300 [2020-10-19 21:35:19,342 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 [2020-10-19 21:35:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-19 21:35:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 76. [2020-10-19 21:35:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 21:35:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2020-10-19 21:35:19,358 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 27 [2020-10-19 21:35:19,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 21:35:19,358 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2020-10-19 21:35:19,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 21:35:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2020-10-19 21:35:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 21:35:19,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 21:35:19,360 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] [2020-10-19 21:35:19,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 21:35:19,575 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 21:35:19,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 21:35:19,575 INFO L82 PathProgramCache]: Analyzing trace with hash 176400846, now seen corresponding path program 2 times [2020-10-19 21:35:19,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 21:35:19,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48524850] [2020-10-19 21:35:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 21:35:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-19 21:35:19,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48524850] [2020-10-19 21:35:19,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 21:35:19,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 21:35:19,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667963537] [2020-10-19 21:35:19,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 21:35:19,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 21:35:19,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 21:35:19,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 21:35:19,709 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand 4 states. [2020-10-19 21:35:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 21:35:19,741 INFO L93 Difference]: Finished difference Result 151 states and 186 transitions. [2020-10-19 21:35:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 21:35:19,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 21:35:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 21:35:19,743 INFO L225 Difference]: With dead ends: 151 [2020-10-19 21:35:19,743 INFO L226 Difference]: Without dead ends: 110 [2020-10-19 21:35:19,744 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 [2020-10-19 21:35:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-19 21:35:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 79. [2020-10-19 21:35:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-19 21:35:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-19 21:35:19,764 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 31 [2020-10-19 21:35:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 21:35:19,764 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-19 21:35:19,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 21:35:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-19 21:35:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 21:35:19,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 21:35:19,769 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] [2020-10-19 21:35:19,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 21:35:19,770 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 21:35:19,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 21:35:19,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1925275268, now seen corresponding path program 1 times [2020-10-19 21:35:19,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 21:35:19,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913487095] [2020-10-19 21:35:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 21:35:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 21:35:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-19 21:35:19,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913487095] [2020-10-19 21:35:19,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 21:35:19,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 21:35:19,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854941122] [2020-10-19 21:35:19,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 21:35:19,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 21:35:19,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 21:35:19,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 21:35:19,901 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 4 states. [2020-10-19 21:35:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 21:35:19,920 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2020-10-19 21:35:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 21:35:19,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-19 21:35:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 21:35:19,921 INFO L225 Difference]: With dead ends: 88 [2020-10-19 21:35:19,921 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 21:35:19,922 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 [2020-10-19 21:35:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 21:35:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 21:35:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 21:35:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 21:35:19,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-10-19 21:35:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 21:35:19,923 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 21:35:19,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 21:35:19,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 21:35:19,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 21:35:19,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 21:35:19,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 21:35:20,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,119 INFO L274 CegarLoopResult]: For program point L52(lines 52 54) no Hoare annotation was computed. [2020-10-19 21:35:20,120 INFO L274 CegarLoopResult]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2020-10-19 21:35:20,120 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 21:35:20,120 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 21:35:20,120 INFO L274 CegarLoopResult]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2020-10-19 21:35:20,120 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)) [2020-10-19 21:35:20,120 INFO L274 CegarLoopResult]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2020-10-19 21:35:20,121 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,121 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,121 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,121 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,122 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,122 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,122 INFO L274 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,122 INFO L274 CegarLoopResult]: For program point L12-10(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,122 INFO L274 CegarLoopResult]: For program point L12-11(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,123 INFO L274 CegarLoopResult]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2020-10-19 21:35:20,123 INFO L270 CegarLoopResult]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2020-10-19 21:35:20,123 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,123 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,123 INFO L274 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,124 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,124 INFO L274 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,124 INFO L274 CegarLoopResult]: For program point L13-7(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,124 INFO L274 CegarLoopResult]: For program point L13-8(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,124 INFO L274 CegarLoopResult]: For program point L13-9(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,125 INFO L274 CegarLoopResult]: For program point L13-11(line 13) no Hoare annotation was computed. [2020-10-19 21:35:20,125 INFO L274 CegarLoopResult]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2020-10-19 21:35:20,125 INFO L274 CegarLoopResult]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2020-10-19 21:35:20,125 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)) [2020-10-19 21:35:20,125 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)) [2020-10-19 21:35:20,126 INFO L274 CegarLoopResult]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2020-10-19 21:35:20,126 INFO L274 CegarLoopResult]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2020-10-19 21:35:20,126 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)) [2020-10-19 21:35:20,126 INFO L274 CegarLoopResult]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2020-10-19 21:35:20,126 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-10-19 21:35:20,127 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)) [2020-10-19 21:35:20,127 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-10-19 21:35:20,127 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-19 21:35:20,127 INFO L274 CegarLoopResult]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2020-10-19 21:35:20,128 INFO L270 CegarLoopResult]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2020-10-19 21:35:20,128 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2020-10-19 21:35:20,128 INFO L270 CegarLoopResult]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2020-10-19 21:35:20,128 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 21:35:20,128 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,129 INFO L277 CegarLoopResult]: At program point L66(lines 27 67) the Hoare annotation is: true [2020-10-19 21:35:20,129 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 21:35:20,129 INFO L274 CegarLoopResult]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2020-10-19 21:35:20,129 INFO L270 CegarLoopResult]: At program point L33-3(lines 33 36) the Hoare annotation is: (= ULTIMATE.start_main_~n~0 0) [2020-10-19 21:35:20,129 INFO L274 CegarLoopResult]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2020-10-19 21:35:20,130 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)) [2020-10-19 21:35:20,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-19 21:35:20,130 INFO L270 CegarLoopResult]: At program point L18(lines 16 19) the Hoare annotation is: false [2020-10-19 21:35:20,130 INFO L274 CegarLoopResult]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2020-10-19 21:35:20,131 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)))) [2020-10-19 21:35:20,131 INFO L274 CegarLoopResult]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2020-10-19 21:35:20,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 09:35:20 BoogieIcfgContainer [2020-10-19 21:35:20,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 21:35:20,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 21:35:20,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 21:35:20,155 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 21:35:20,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 09:35:17" (3/4) ... [2020-10-19 21:35:20,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 21:35:20,174 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-10-19 21:35:20,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-19 21:35:20,176 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 21:35:20,176 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 21:35:20,210 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((n == 0 && x == 0) && i == 0) && \result == 0) && size == 0 [2020-10-19 21:35:20,258 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 21:35:20,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 21:35:20,261 INFO L168 Benchmark]: Toolchain (without parser) took 3775.27 ms. Allocated memory was 40.9 MB in the beginning and 55.6 MB in the end (delta: 14.7 MB). Free memory was 17.6 MB in the beginning and 22.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-19 21:35:20,262 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 30.9 MB. Free memory was 16.8 MB in the beginning and 16.7 MB in the end (delta: 29.6 kB). Peak memory consumption was 29.6 kB. Max. memory is 14.3 GB. [2020-10-19 21:35:20,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.13 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 16.7 MB in the beginning and 14.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-19 21:35:20,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.48 ms. Allocated memory is still 41.4 MB. Free memory was 14.4 MB in the beginning and 12.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-19 21:35:20,264 INFO L168 Benchmark]: Boogie Preprocessor took 32.77 ms. Allocated memory is still 41.4 MB. Free memory was 12.2 MB in the beginning and 10.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 21:35:20,265 INFO L168 Benchmark]: RCFGBuilder took 505.93 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 10.3 MB in the beginning and 18.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-19 21:35:20,265 INFO L168 Benchmark]: TraceAbstraction took 2780.16 ms. Allocated memory was 43.5 MB in the beginning and 55.6 MB in the end (delta: 12.1 MB). Free memory was 17.8 MB in the beginning and 28.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-19 21:35:20,266 INFO L168 Benchmark]: Witness Printer took 103.99 ms. Allocated memory is still 55.6 MB. Free memory was 28.1 MB in the beginning and 22.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. [2020-10-19 21:35:20,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 30.9 MB. Free memory was 16.8 MB in the beginning and 16.7 MB in the end (delta: 29.6 kB). Peak memory consumption was 29.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 294.13 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 16.7 MB in the beginning and 14.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.48 ms. Allocated memory is still 41.4 MB. Free memory was 14.4 MB in the beginning and 12.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.77 ms. Allocated memory is still 41.4 MB. Free memory was 12.2 MB in the beginning and 10.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 505.93 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 10.3 MB in the beginning and 18.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2780.16 ms. Allocated memory was 43.5 MB in the beginning and 55.6 MB in the end (delta: 12.1 MB). Free memory was 17.8 MB in the beginning and 28.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. * Witness Printer took 103.99 ms. Allocated memory is still 55.6 MB. Free memory was 28.1 MB in the beginning and 22.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 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: 2.4s, 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, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s 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, 0.5s 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...