/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:09:13,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:09:13,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:09:13,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:09:13,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:09:13,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:09:13,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:09:13,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:09:13,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:09:13,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:09:13,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:09:13,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:09:13,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:09:13,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:09:13,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:09:13,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:09:13,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:09:13,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:09:13,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:09:13,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:09:13,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:09:13,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:09:13,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:09:13,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:09:13,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:09:13,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:09:13,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:09:13,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:09:13,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:09:13,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:09:13,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:09:13,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:09:13,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:09:13,381 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:09:13,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:09:13,381 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:09:13,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:09:13,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:09:13,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:09:13,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:09:13,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:09:13,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:09:13,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:09:13,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:09:13,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:09:13,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:09:13,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:09:13,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:09:13,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:09:13,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:09:13,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:09:13,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:09:13,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:09:13,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:09:13,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:09:13,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:09:13,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:09:13,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:09:13,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:09:13,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:09:13,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:09:13,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:09:13,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:09:13,689 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:09:13,690 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c [2020-07-17 22:09:13,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6bc7a92/64ad604e974d45f4b2510812ba030e09/FLAG514ce42a6 [2020-07-17 22:09:14,203 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:09:14,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec_2calls-2.c [2020-07-17 22:09:14,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6bc7a92/64ad604e974d45f4b2510812ba030e09/FLAG514ce42a6 [2020-07-17 22:09:14,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6bc7a92/64ad604e974d45f4b2510812ba030e09 [2020-07-17 22:09:14,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:09:14,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:09:14,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:09:14,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:09:14,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:09:14,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ff5312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14, skipping insertion in model container [2020-07-17 22:09:14,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:09:14,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:09:14,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:09:14,837 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:09:14,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:09:14,872 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:09:14,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14 WrapperNode [2020-07-17 22:09:14,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:09:14,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:09:14,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:09:14,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:09:14,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (1/1) ... [2020-07-17 22:09:14,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:09:14,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:09:14,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:09:14,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:09:14,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (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 [2020-07-17 22:09:15,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:09:15,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:09:15,061 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-17 22:09:15,061 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2020-07-17 22:09:15,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:09:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:09:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-17 22:09:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2020-07-17 22:09:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:09:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:09:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:09:15,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:09:15,312 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:09:15,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:09:15 BoogieIcfgContainer [2020-07-17 22:09:15,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:09:15,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:09:15,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:09:15,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:09:15,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:09:14" (1/3) ... [2020-07-17 22:09:15,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b878b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:09:15, skipping insertion in model container [2020-07-17 22:09:15,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:09:14" (2/3) ... [2020-07-17 22:09:15,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b878b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:09:15, skipping insertion in model container [2020-07-17 22:09:15,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:09:15" (3/3) ... [2020-07-17 22:09:15,341 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-2.c [2020-07-17 22:09:15,352 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:09:15,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-17 22:09:15,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-17 22:09:15,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:09:15,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:09:15,398 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:09:15,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:09:15,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:09:15,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:09:15,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:09:15,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:09:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-17 22:09:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 22:09:15,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:09:15,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:09:15,425 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:09:15,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:09:15,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1662209305, now seen corresponding path program 1 times [2020-07-17 22:09:15,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:09:15,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011969370] [2020-07-17 22:09:15,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:09:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:09:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:09:15,627 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-17 22:09:15,627 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {26#true} {26#true} #29#return; {26#true} is VALID [2020-07-17 22:09:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:09:15,639 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} ~n := #in~n; {26#true} is VALID [2020-07-17 22:09:15,639 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume ~n < 3; {26#true} is VALID [2020-07-17 22:09:15,640 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-17 22:09:15,640 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {26#true} {27#false} #27#return; {27#false} is VALID [2020-07-17 22:09:15,641 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {26#true} is VALID [2020-07-17 22:09:15,641 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-17 22:09:15,642 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #29#return; {26#true} is VALID [2020-07-17 22:09:15,642 INFO L263 TraceCheckUtils]: 3: Hoare triple {26#true} call #t~ret4 := main(); {26#true} is VALID [2020-07-17 22:09:15,644 INFO L263 TraceCheckUtils]: 4: Hoare triple {26#true} call f(2); {30#(<= |f_#in~n| 2)} is VALID [2020-07-17 22:09:15,646 INFO L280 TraceCheckUtils]: 5: Hoare triple {30#(<= |f_#in~n| 2)} ~n := #in~n; {31#(<= f_~n 2)} is VALID [2020-07-17 22:09:15,648 INFO L280 TraceCheckUtils]: 6: Hoare triple {31#(<= f_~n 2)} assume !(~n < 3);#t~post2 := ~n;~n := #t~post2 - 1;havoc #t~post2; {27#false} is VALID [2020-07-17 22:09:15,649 INFO L263 TraceCheckUtils]: 7: Hoare triple {27#false} call f2(~n); {26#true} is VALID [2020-07-17 22:09:15,649 INFO L280 TraceCheckUtils]: 8: Hoare triple {26#true} ~n := #in~n; {26#true} is VALID [2020-07-17 22:09:15,649 INFO L280 TraceCheckUtils]: 9: Hoare triple {26#true} assume ~n < 3; {26#true} is VALID [2020-07-17 22:09:15,650 INFO L280 TraceCheckUtils]: 10: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-17 22:09:15,650 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {26#true} {27#false} #27#return; {27#false} is VALID [2020-07-17 22:09:15,651 INFO L280 TraceCheckUtils]: 12: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-17 22:09:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:09:15,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011969370] [2020-07-17 22:09:15,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:09:15,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 22:09:15,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433849059] [2020-07-17 22:09:15,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-17 22:09:15,669 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:09:15,673 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-17 22:09:15,716 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:09:15,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 22:09:15,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:09:15,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 22:09:15,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:09:15,727 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-07-17 22:09:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:09:15,835 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-17 22:09:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 22:09:15,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-17 22:09:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:09:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:09:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2020-07-17 22:09:15,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:09:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2020-07-17 22:09:15,854 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 33 transitions. [2020-07-17 22:09:15,914 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:09:15,921 INFO L225 Difference]: With dead ends: 31 [2020-07-17 22:09:15,921 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:09:15,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:09:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:09:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:09:15,951 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:09:15,951 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:09:15,952 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:09:15,952 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:09:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:09:15,954 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:09:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:09:15,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:09:15,955 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:09:15,955 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:09:15,955 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:09:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:09:15,956 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:09:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:09:15,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:09:15,957 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:09:15,957 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:09:15,957 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:09:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:09:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:09:15,960 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-17 22:09:15,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:09:15,960 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:09:15,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 22:09:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:09:15,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:09:15,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:09:15,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:09:16,004 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 22:09:16,004 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:09:16,004 INFO L268 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-17 22:09:16,005 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (not (<= |f_#in~n| 2)) [2020-07-17 22:09:16,005 INFO L268 CegarLoopResult]: For program point L9-1(lines 6 11) no Hoare annotation was computed. [2020-07-17 22:09:16,005 INFO L268 CegarLoopResult]: For program point fEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-17 22:09:16,005 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-07-17 22:09:16,005 INFO L271 CegarLoopResult]: At program point fENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 22:09:16,006 INFO L268 CegarLoopResult]: For program point fFINAL(lines 6 11) no Hoare annotation was computed. [2020-07-17 22:09:16,006 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:09:16,006 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:09:16,006 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:09:16,006 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:09:16,007 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 22) the Hoare annotation is: true [2020-07-17 22:09:16,007 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 22) no Hoare annotation was computed. [2020-07-17 22:09:16,007 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 22) no Hoare annotation was computed. [2020-07-17 22:09:16,007 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-17 22:09:16,007 INFO L268 CegarLoopResult]: For program point f2EXIT(lines 13 18) no Hoare annotation was computed. [2020-07-17 22:09:16,007 INFO L268 CegarLoopResult]: For program point L16-1(lines 13 18) no Hoare annotation was computed. [2020-07-17 22:09:16,008 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-07-17 22:09:16,008 INFO L271 CegarLoopResult]: At program point f2ENTRY(lines 13 18) the Hoare annotation is: true [2020-07-17 22:09:16,008 INFO L268 CegarLoopResult]: For program point f2FINAL(lines 13 18) no Hoare annotation was computed. [2020-07-17 22:09:16,008 INFO L268 CegarLoopResult]: For program point f2Err0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-07-17 22:09:16,013 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:09:16,013 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-17 22:09:16,013 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:09:16,014 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-17 22:09:16,014 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:09:16,014 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-17 22:09:16,014 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-17 22:09:16,014 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:09:16,014 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:09:16,014 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-17 22:09:16,015 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-17 22:09:16,015 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2020-07-17 22:09:16,015 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-17 22:09:16,015 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:09:16,015 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:09:16,015 WARN L170 areAnnotationChecker]: f2FINAL has no Hoare annotation [2020-07-17 22:09:16,015 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-17 22:09:16,016 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-17 22:09:16,016 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-17 22:09:16,016 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-17 22:09:16,016 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-17 22:09:16,016 WARN L170 areAnnotationChecker]: f2EXIT has no Hoare annotation [2020-07-17 22:09:16,016 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-17 22:09:16,017 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-17 22:09:16,017 INFO L163 areAnnotationChecker]: CFG has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:09:16,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:09:16 BoogieIcfgContainer [2020-07-17 22:09:16,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:09:16,023 INFO L168 Benchmark]: Toolchain (without parser) took 1421.87 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 114.1 MB in the end (delta: -12.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:09:16,024 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 22:09:16,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.26 ms. Allocated memory is still 145.2 MB. Free memory was 101.0 MB in the beginning and 91.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:09:16,026 INFO L168 Benchmark]: Boogie Preprocessor took 23.40 ms. Allocated memory is still 145.2 MB. Free memory was 91.9 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:09:16,027 INFO L168 Benchmark]: RCFGBuilder took 418.38 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 90.4 MB in the beginning and 165.7 MB in the end (delta: -75.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:09:16,028 INFO L168 Benchmark]: TraceAbstraction took 702.78 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 114.1 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:09:16,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.26 ms. Allocated memory is still 145.2 MB. Free memory was 101.0 MB in the beginning and 91.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.40 ms. Allocated memory is still 145.2 MB. Free memory was 91.9 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.38 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 90.4 MB in the beginning and 165.7 MB in the end (delta: -75.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 702.78 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 114.1 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 5 SDslu, 15 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 11 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...