/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:29:10,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:29:10,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:29:10,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:29:10,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:29:10,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:29:10,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:29:10,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:29:10,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:29:10,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:29:10,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:29:10,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:29:10,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:29:10,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:29:10,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:29:10,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:29:10,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:29:10,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:29:10,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:29:10,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:29:10,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:29:10,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:29:10,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:29:10,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:29:10,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:29:10,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:29:10,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:29:10,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:29:10,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:29:10,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:29:10,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:29:10,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:29:10,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:29:10,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:29:10,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:29:10,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:29:10,416 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:29:10,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:29:10,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:29:10,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:29:10,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:29:10,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:29:10,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:29:10,417 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:29:10,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:29:10,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:29:10,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:29:10,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:29:10,895 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:29:10,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-10-23 20:29:10,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226ea0024/4bd0621dba67418b8cfe962af0774a47/FLAG4087fbf48 [2020-10-23 20:29:11,659 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:29:11,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-10-23 20:29:11,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226ea0024/4bd0621dba67418b8cfe962af0774a47/FLAG4087fbf48 [2020-10-23 20:29:12,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226ea0024/4bd0621dba67418b8cfe962af0774a47 [2020-10-23 20:29:12,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:29:12,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:29:12,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:29:12,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:29:12,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:29:12,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbd519a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12, skipping insertion in model container [2020-10-23 20:29:12,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:29:12,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:29:12,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:29:12,239 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:29:12,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:29:12,282 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:29:12,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12 WrapperNode [2020-10-23 20:29:12,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:29:12,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:29:12,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:29:12,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:29:12,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (1/1) ... [2020-10-23 20:29:12,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:29:12,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:29:12,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:29:12,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:29:12,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (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 [2020-10-23 20:29:12,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:29:12,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:29:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:29:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-23 20:29:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:29:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:29:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:29:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:29:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:29:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-23 20:29:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:29:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:29:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:29:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:29:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:29:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:29:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:29:12,869 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:29:12,870 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:29:12,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:29:12 BoogieIcfgContainer [2020-10-23 20:29:12,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:29:12,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:29:12,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:29:12,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:29:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:29:12" (1/3) ... [2020-10-23 20:29:12,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce30610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:29:12, skipping insertion in model container [2020-10-23 20:29:12,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:12" (2/3) ... [2020-10-23 20:29:12,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce30610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:29:12, skipping insertion in model container [2020-10-23 20:29:12,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:29:12" (3/3) ... [2020-10-23 20:29:12,884 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c [2020-10-23 20:29:12,899 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:29:12,905 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:29:12,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:29:12,947 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:29:12,948 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:29:12,948 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:29:12,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:29:12,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:29:12,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:29:12,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:29:12,949 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:29:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-23 20:29:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 20:29:12,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:12,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:29:12,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:12,991 INFO L82 PathProgramCache]: Analyzing trace with hash -342472451, now seen corresponding path program 1 times [2020-10-23 20:29:13,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:13,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143126651] [2020-10-23 20:29:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:13,117 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:29:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:29:13,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143126651] [2020-10-23 20:29:13,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:13,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:29:13,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234159458] [2020-10-23 20:29:13,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:29:13,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:13,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:29:13,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:29:13,519 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 6 states. [2020-10-23 20:29:13,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:13,802 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-10-23 20:29:13,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:29:13,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-23 20:29:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:13,814 INFO L225 Difference]: With dead ends: 52 [2020-10-23 20:29:13,814 INFO L226 Difference]: Without dead ends: 34 [2020-10-23 20:29:13,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:29:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-23 20:29:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-23 20:29:13,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 20:29:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-23 20:29:13,872 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2020-10-23 20:29:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:13,873 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-23 20:29:13,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:29:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-23 20:29:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 20:29:13,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:13,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:29:13,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:29:13,877 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:13,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:13,878 INFO L82 PathProgramCache]: Analyzing trace with hash 653425116, now seen corresponding path program 1 times [2020-10-23 20:29:13,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:13,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838661588] [2020-10-23 20:29:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:13,884 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:29:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:29:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-23 20:29:14,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838661588] [2020-10-23 20:29:14,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:14,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:29:14,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532651857] [2020-10-23 20:29:14,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:29:14,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:14,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:29:14,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:29:14,110 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 7 states. [2020-10-23 20:29:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:14,384 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-23 20:29:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:29:14,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-23 20:29:14,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:14,387 INFO L225 Difference]: With dead ends: 46 [2020-10-23 20:29:14,387 INFO L226 Difference]: Without dead ends: 39 [2020-10-23 20:29:14,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:29:14,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-23 20:29:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-23 20:29:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 20:29:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-23 20:29:14,412 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2020-10-23 20:29:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:14,412 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-23 20:29:14,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:29:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-23 20:29:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 20:29:14,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:14,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:29:14,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:29:14,415 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:14,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1221623283, now seen corresponding path program 2 times [2020-10-23 20:29:14,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:14,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775789862] [2020-10-23 20:29:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:14,420 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:14,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:29:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:29:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:29:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:29:15,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775789862] [2020-10-23 20:29:15,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:15,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 20:29:15,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355810188] [2020-10-23 20:29:15,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 20:29:15,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:15,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 20:29:15,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:29:15,028 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 16 states. [2020-10-23 20:29:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:16,182 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-10-23 20:29:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 20:29:16,183 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-23 20:29:16,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:16,185 INFO L225 Difference]: With dead ends: 51 [2020-10-23 20:29:16,185 INFO L226 Difference]: Without dead ends: 44 [2020-10-23 20:29:16,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2020-10-23 20:29:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-23 20:29:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-23 20:29:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-23 20:29:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-23 20:29:16,202 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 45 [2020-10-23 20:29:16,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:16,203 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-23 20:29:16,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 20:29:16,203 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-23 20:29:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-23 20:29:16,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:16,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:29:16,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:29:16,206 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:16,207 INFO L82 PathProgramCache]: Analyzing trace with hash 942298982, now seen corresponding path program 3 times [2020-10-23 20:29:16,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:16,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030025181] [2020-10-23 20:29:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:16,211 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:16,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:29:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:16,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:29:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:29:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:29:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-23 20:29:16,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030025181] [2020-10-23 20:29:16,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:16,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:29:16,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560056513] [2020-10-23 20:29:16,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:29:16,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:29:16,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:29:16,436 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 8 states. [2020-10-23 20:29:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:16,837 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-23 20:29:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:29:16,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-23 20:29:16,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:16,839 INFO L225 Difference]: With dead ends: 59 [2020-10-23 20:29:16,839 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:29:16,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:29:16,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:29:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:29:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:29:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:29:16,842 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-10-23 20:29:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:16,843 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:29:16,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:29:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:29:16,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:29:16,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:29:16,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:29:17,406 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-10-23 20:29:17,753 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-10-23 20:29:17,972 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-10-23 20:29:18,337 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2020-10-23 20:29:18,549 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2020-10-23 20:29:18,799 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,799 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,799 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,800 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,800 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,800 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,800 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:29:18,801 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,801 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:29:18,801 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,801 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 20:29:18,802 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,802 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:29:18,802 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:29:18,802 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:29:18,802 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:29:18,802 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:29:18,802 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:29:18,803 INFO L270 CegarLoopResult]: At program point sumEXIT(lines 5 11) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|))) (or (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= (+ |sum_#in~n| |sum_#in~m|) |sum_#res|)) (let ((.cse2 (+ |sum_#in~m| 2))) (and .cse0 (<= 2 |sum_#in~n|) (<= .cse2 |sum_#res|) .cse1 (<= |sum_#res| .cse2))) (let ((.cse3 (+ |sum_#in~m| 1))) (and .cse0 (<= .cse3 |sum_#res|) .cse1 (<= |sum_#res| .cse3) (<= |sum_#in~n| 1) (<= 1 |sum_#in~n|))) (and .cse0 .cse1 (<= 3 |sum_#in~n|)))) [2020-10-23 20:29:18,804 INFO L270 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= 1 |sum_#in~n|)) [2020-10-23 20:29:18,804 INFO L270 CegarLoopResult]: At program point L9-1(line 9) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|))) (or (let ((.cse2 (+ |sum_#in~m| 2))) (and .cse0 (<= 2 |sum_#in~n|) .cse1 (<= |sum_#t~ret7| .cse2) (<= .cse2 |sum_#t~ret7|))) (let ((.cse3 (+ |sum_#in~m| 1))) (and .cse0 (<= .cse3 |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) (<= 1 |sum_#in~n|) (<= |sum_#t~ret7| .cse3))) (and .cse0 .cse1 (<= 3 |sum_#in~n|)))) [2020-10-23 20:29:18,804 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= sum_~n 0)) [2020-10-23 20:29:18,805 INFO L270 CegarLoopResult]: At program point L9-2(line 9) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|))) (or (let ((.cse2 (+ |sum_#in~m| 2))) (and .cse0 (<= 2 |sum_#in~n|) .cse1 (<= |sum_#t~ret7| .cse2) (<= .cse2 |sum_#t~ret7|))) (let ((.cse3 (+ |sum_#in~m| 1))) (and .cse0 (<= .cse3 |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) (<= 1 |sum_#in~n|) (<= |sum_#t~ret7| .cse3))) (and .cse0 .cse1 (<= 3 |sum_#in~n|)))) [2020-10-23 20:29:18,805 INFO L270 CegarLoopResult]: At program point L6(lines 6 10) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2020-10-23 20:29:18,805 INFO L270 CegarLoopResult]: At program point L9-3(line 9) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse2 (= sum_~m |sum_#in~m|))) (or (let ((.cse1 (+ |sum_#in~m| 1))) (and .cse0 (<= .cse1 |sum_#t~ret7|) (<= .cse1 |sum_#res|) .cse2 (<= |sum_#res| .cse1) (<= |sum_#in~n| 1) (<= 1 |sum_#in~n|) (<= |sum_#t~ret7| .cse1))) (and .cse0 .cse2 (<= 3 |sum_#in~n|)) (let ((.cse3 (+ |sum_#in~m| 2))) (and .cse0 (<= 2 |sum_#in~n|) (<= .cse3 |sum_#res|) .cse2 (<= |sum_#t~ret7| .cse3) (<= |sum_#res| .cse3) (<= .cse3 |sum_#t~ret7|))))) [2020-10-23 20:29:18,805 INFO L270 CegarLoopResult]: At program point L5(lines 5 11) the Hoare annotation is: (= sum_~n |sum_#in~n|) [2020-10-23 20:29:18,806 INFO L270 CegarLoopResult]: At program point sumFINAL(lines 5 11) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|))) (or (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= (+ |sum_#in~n| |sum_#in~m|) |sum_#res|)) (let ((.cse2 (+ |sum_#in~m| 2))) (and .cse0 (<= 2 |sum_#in~n|) (<= .cse2 |sum_#res|) .cse1 (<= |sum_#res| .cse2))) (let ((.cse3 (+ |sum_#in~m| 1))) (and .cse0 (<= .cse3 |sum_#res|) .cse1 (<= |sum_#res| .cse3) (<= |sum_#in~n| 1) (<= 1 |sum_#in~n|))) (and .cse0 .cse1 (<= 3 |sum_#in~n|)))) [2020-10-23 20:29:18,806 INFO L277 CegarLoopResult]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2020-10-23 20:29:18,806 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-10-23 20:29:18,806 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 13 20) the Hoare annotation is: (= main_~a~0 2) [2020-10-23 20:29:18,806 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: false [2020-10-23 20:29:18,807 INFO L270 CegarLoopResult]: At program point L17(lines 17 19) the Hoare annotation is: (and (<= (+ main_~a~0 main_~b~0) main_~result~0) (<= main_~result~0 (+ main_~b~0 2)) (= main_~a~0 2)) [2020-10-23 20:29:18,807 INFO L270 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: false [2020-10-23 20:29:18,807 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= main_~a~0 2) [2020-10-23 20:29:18,807 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= main_~a~0 2) [2020-10-23 20:29:18,807 INFO L270 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (let ((.cse0 (+ main_~b~0 2))) (and (<= |main_#t~ret8| .cse0) (<= .cse0 |main_#t~ret8|) (= main_~a~0 2))) [2020-10-23 20:29:18,807 INFO L270 CegarLoopResult]: At program point L17-2(lines 13 20) the Hoare annotation is: (= main_~a~0 2) [2020-10-23 20:29:18,808 INFO L270 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (let ((.cse0 (+ main_~b~0 2))) (and (<= |main_#t~ret8| .cse0) (<= .cse0 |main_#t~ret8|) (= main_~a~0 2))) [2020-10-23 20:29:18,808 INFO L270 CegarLoopResult]: At program point L16-3(line 16) the Hoare annotation is: (let ((.cse0 (+ main_~b~0 2))) (and (<= (+ main_~a~0 main_~b~0) main_~result~0) (<= |main_#t~ret8| .cse0) (<= main_~result~0 .cse0) (<= .cse0 |main_#t~ret8|) (= main_~a~0 2))) [2020-10-23 20:29:18,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:29:18 BoogieIcfgContainer [2020-10-23 20:29:18,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:29:18,854 INFO L168 Benchmark]: Toolchain (without parser) took 6812.98 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 128.2 MB in the beginning and 101.6 MB in the end (delta: 26.6 MB). Peak memory consumption was 124.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:18,854 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.2 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:29:18,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.47 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 118.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:18,858 INFO L168 Benchmark]: Boogie Preprocessor took 57.24 ms. Allocated memory is still 151.0 MB. Free memory was 118.5 MB in the beginning and 117.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:18,859 INFO L168 Benchmark]: RCFGBuilder took 528.21 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 103.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:18,860 INFO L168 Benchmark]: TraceAbstraction took 5973.17 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 103.4 MB in the beginning and 101.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 98.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:18,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.2 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.47 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 118.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.24 ms. Allocated memory is still 151.0 MB. Free memory was 118.5 MB in the beginning and 117.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 528.21 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 103.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5973.17 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 103.4 MB in the beginning and 101.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 98.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum: (((((n == \old(n) && \result <= \old(m)) && m == \old(m)) && \old(n) + \old(m) <= \result) || ((((n == \old(n) && 2 <= \old(n)) && \old(m) + 2 <= \result) && m == \old(m)) && \result <= \old(m) + 2)) || (((((n == \old(n) && \old(m) + 1 <= \result) && m == \old(m)) && \result <= \old(m) + 1) && \old(n) <= 1) && 1 <= \old(n))) || ((n == \old(n) && m == \old(m)) && 3 <= \old(n)) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: a == 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 182 SDslu, 294 SDs, 0 SdLazy, 460 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 71 PreInvPairs, 134 NumberOfFragments, 480 HoareAnnotationTreeSize, 71 FomulaSimplifications, 708 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 39 FomulaSimplificationsInter, 2988 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...