/usr/bin/java -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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:45:52,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:45:52,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:45:52,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:45:52,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:45:52,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:45:52,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:45:52,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:45:52,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:45:52,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:45:52,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:45:52,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:45:52,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:45:52,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:45:52,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:45:52,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:45:52,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:45:52,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:45:52,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:45:52,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:45:52,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:45:52,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:45:52,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:45:52,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:45:52,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:45:52,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:45:52,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:45:52,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:45:52,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:45:52,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:45:52,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:45:52,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:45:52,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:45:52,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:45:52,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:45:52,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:45:52,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:45:52,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:45:52,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:45:52,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:45:52,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:45:52,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:45:52,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:45:52,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:45:52,561 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:45:52,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:45:52,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:45:52,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:45:52,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:45:52,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:45:52,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:45:52,563 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:45:53,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:45:53,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:45:53,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:45:53,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:45:53,048 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:45:53,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-04 17:45:53,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f34a2ef24/6fafc57d94874fed8df7ce0374981c17/FLAG3b5d2b39b [2020-09-04 17:45:53,713 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:45:53,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-04 17:45:53,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f34a2ef24/6fafc57d94874fed8df7ce0374981c17/FLAG3b5d2b39b [2020-09-04 17:45:54,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f34a2ef24/6fafc57d94874fed8df7ce0374981c17 [2020-09-04 17:45:54,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:45:54,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:45:54,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:45:54,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:45:54,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:45:54,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54, skipping insertion in model container [2020-09-04 17:45:54,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:45:54,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:45:54,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:45:54,369 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:45:54,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:45:54,422 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:45:54,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54 WrapperNode [2020-09-04 17:45:54,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:45:54,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:45:54,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:45:54,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:45:54,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (1/1) ... [2020-09-04 17:45:54,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:45:54,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:45:54,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:45:54,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:45:54,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:45:54,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:45:54,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:45:54,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:45:54,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:45:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:45:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 17:45:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:45:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:45:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:45:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:45:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:45:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:45:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:45:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:45:54,916 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:45:54,916 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 17:45:54,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:45:54 BoogieIcfgContainer [2020-09-04 17:45:54,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:45:54,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:45:54,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:45:54,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:45:54,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:45:54" (1/3) ... [2020-09-04 17:45:54,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0f9eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:45:54, skipping insertion in model container [2020-09-04 17:45:54,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:54" (2/3) ... [2020-09-04 17:45:54,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0f9eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:45:54, skipping insertion in model container [2020-09-04 17:45:54,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:45:54" (3/3) ... [2020-09-04 17:45:54,933 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-04 17:45:54,946 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:45:54,957 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:45:54,981 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:45:55,012 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:45:55,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:45:55,012 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:45:55,013 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:45:55,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:45:55,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:45:55,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:45:55,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:45:55,032 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-04 17:45:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 17:45:55,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:55,045 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] [2020-09-04 17:45:55,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash 435763839, now seen corresponding path program 1 times [2020-09-04 17:45:55,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:55,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943666844] [2020-09-04 17:45:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:55,134 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:45:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:45:55,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943666844] [2020-09-04 17:45:55,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:55,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:45:55,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094652628] [2020-09-04 17:45:55,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:45:55,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:55,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:45:55,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:45:55,335 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-09-04 17:45:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:55,580 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-09-04 17:45:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:45:55,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-04 17:45:55,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:55,596 INFO L225 Difference]: With dead ends: 81 [2020-09-04 17:45:55,596 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 17:45:55,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:45:55,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 17:45:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-04 17:45:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 17:45:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-04 17:45:55,650 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 27 [2020-09-04 17:45:55,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:55,651 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-04 17:45:55,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:45:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-04 17:45:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 17:45:55,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:55,653 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] [2020-09-04 17:45:55,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:45:55,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:55,654 INFO L82 PathProgramCache]: Analyzing trace with hash 424681587, now seen corresponding path program 1 times [2020-09-04 17:45:55,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:55,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292870320] [2020-09-04 17:45:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:55,658 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:45:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:55,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:45:55,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292870320] [2020-09-04 17:45:55,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:55,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 17:45:55,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150151906] [2020-09-04 17:45:55,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 17:45:55,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:55,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 17:45:55,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 17:45:55,759 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 4 states. [2020-09-04 17:45:55,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:55,878 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-04 17:45:55,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 17:45:55,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-04 17:45:55,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:55,883 INFO L225 Difference]: With dead ends: 73 [2020-09-04 17:45:55,883 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 17:45:55,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 17:45:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 17:45:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-09-04 17:45:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 17:45:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-04 17:45:55,897 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 27 [2020-09-04 17:45:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:55,898 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-04 17:45:55,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 17:45:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-04 17:45:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 17:45:55,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:55,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:45:55,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:45:55,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:55,901 INFO L82 PathProgramCache]: Analyzing trace with hash 164402036, now seen corresponding path program 1 times [2020-09-04 17:45:55,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:55,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003158003] [2020-09-04 17:45:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:55,938 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:45:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:56,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:45:56,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003158003] [2020-09-04 17:45:56,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:56,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 17:45:56,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111906176] [2020-09-04 17:45:56,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 17:45:56,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:56,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 17:45:56,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:45:56,123 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 6 states. [2020-09-04 17:45:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:56,299 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-09-04 17:45:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 17:45:56,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-04 17:45:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:56,301 INFO L225 Difference]: With dead ends: 80 [2020-09-04 17:45:56,301 INFO L226 Difference]: Without dead ends: 59 [2020-09-04 17:45:56,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:45:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-04 17:45:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-09-04 17:45:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-04 17:45:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-04 17:45:56,312 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 34 [2020-09-04 17:45:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:56,313 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-04 17:45:56,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 17:45:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-04 17:45:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 17:45:56,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:56,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:45:56,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:45:56,316 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:56,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:56,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1692003667, now seen corresponding path program 2 times [2020-09-04 17:45:56,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:56,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798960616] [2020-09-04 17:45:56,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:56,324 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:45:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:56,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:45:56,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798960616] [2020-09-04 17:45:56,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:56,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:45:56,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676935853] [2020-09-04 17:45:56,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:45:56,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:56,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:45:56,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:45:56,413 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 5 states. [2020-09-04 17:45:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:56,533 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-09-04 17:45:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 17:45:56,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-04 17:45:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:56,534 INFO L225 Difference]: With dead ends: 50 [2020-09-04 17:45:56,535 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 17:45:56,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:45:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 17:45:56,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 17:45:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 17:45:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 17:45:56,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-09-04 17:45:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:56,537 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 17:45:56,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:45:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 17:45:56,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 17:45:56,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:45:56,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 17:45:56,707 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 17:45:56,707 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-09-04 17:45:56,708 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:45:56,708 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-04 17:45:56,708 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:45:56,708 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:45:56,708 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 17:45:56,709 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 17:45:56,709 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:45:56,709 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-09-04 17:45:56,709 INFO L271 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: true [2020-09-04 17:45:56,709 INFO L271 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: true [2020-09-04 17:45:56,710 INFO L271 CegarLoopResult]: At program point L27-2(lines 27 33) the Hoare annotation is: true [2020-09-04 17:45:56,710 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 10 37) the Hoare annotation is: true [2020-09-04 17:45:56,710 INFO L271 CegarLoopResult]: At program point L27-3(lines 27 33) the Hoare annotation is: true [2020-09-04 17:45:56,710 INFO L271 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-09-04 17:45:56,710 INFO L271 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: true [2020-09-04 17:45:56,710 INFO L271 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: true [2020-09-04 17:45:56,711 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-09-04 17:45:56,711 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-09-04 17:45:56,711 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-09-04 17:45:56,711 INFO L271 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true [2020-09-04 17:45:56,711 INFO L271 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: true [2020-09-04 17:45:56,712 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-09-04 17:45:56,712 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-04 17:45:56,712 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-09-04 17:45:56,712 INFO L271 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-09-04 17:45:56,712 INFO L271 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-09-04 17:45:56,712 INFO L271 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-09-04 17:45:56,713 INFO L271 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-09-04 17:45:56,713 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 10 37) the Hoare annotation is: true [2020-09-04 17:45:56,713 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-09-04 17:45:56,713 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 37) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-04 17:45:56,713 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (= main_~i~0 0) [2020-09-04 17:45:56,714 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (= main_~i~0 0) [2020-09-04 17:45:56,714 INFO L264 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: (= main_~i~0 0) [2020-09-04 17:45:56,714 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-09-04 17:45:56,714 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-09-04 17:45:56,714 INFO L271 CegarLoopResult]: At program point L18-3(lines 18 20) the Hoare annotation is: true [2020-09-04 17:45:56,714 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-09-04 17:45:56,715 INFO L271 CegarLoopResult]: At program point L18-4(line 18) the Hoare annotation is: true [2020-09-04 17:45:56,715 INFO L271 CegarLoopResult]: At program point L18-5(line 18) the Hoare annotation is: true [2020-09-04 17:45:56,715 INFO L271 CegarLoopResult]: At program point L18-6(lines 18 20) the Hoare annotation is: true [2020-09-04 17:45:56,715 INFO L271 CegarLoopResult]: At program point L18-7(lines 18 20) the Hoare annotation is: true [2020-09-04 17:45:56,715 INFO L271 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-09-04 17:45:56,715 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-04 17:45:56,715 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 4 9) the Hoare annotation is: true [2020-09-04 17:45:56,716 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (not (= |__VERIFIER_assert_#in~cond| 1)) [2020-09-04 17:45:56,716 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= __VERIFIER_assert_~cond 1)) [2020-09-04 17:45:56,716 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: (not (= |__VERIFIER_assert_#in~cond| 1)) [2020-09-04 17:45:56,717 INFO L271 CegarLoopResult]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2020-09-04 17:45:56,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:45:56 BoogieIcfgContainer [2020-09-04 17:45:56,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:45:56,736 INFO L168 Benchmark]: Toolchain (without parser) took 2678.66 ms. Allocated memory was 136.8 MB in the beginning and 228.6 MB in the end (delta: 91.8 MB). Free memory was 99.7 MB in the beginning and 151.0 MB in the end (delta: -51.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:56,737 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 136.8 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:45:56,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.30 ms. Allocated memory is still 136.8 MB. Free memory was 99.5 MB in the beginning and 89.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:56,739 INFO L168 Benchmark]: Boogie Preprocessor took 119.14 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 89.5 MB in the beginning and 177.6 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:56,740 INFO L168 Benchmark]: RCFGBuilder took 379.80 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 161.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:56,741 INFO L168 Benchmark]: TraceAbstraction took 1808.61 ms. Allocated memory was 199.8 MB in the beginning and 228.6 MB in the end (delta: 28.8 MB). Free memory was 160.3 MB in the beginning and 151.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:56,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 136.8 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.30 ms. Allocated memory is still 136.8 MB. Free memory was 99.5 MB in the beginning and 89.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.14 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 89.5 MB in the beginning and 177.6 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 379.80 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 161.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1808.61 ms. Allocated memory was 199.8 MB in the beginning and 228.6 MB in the end (delta: 28.8 MB). Free memory was 160.3 MB in the beginning and 151.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 10]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 40 SDslu, 205 SDs, 0 SdLazy, 200 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 51 LocationsWithAnnotation, 69 PreInvPairs, 107 NumberOfFragments, 81 HoareAnnotationTreeSize, 69 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 51 FomulaSimplificationsInter, 65 FormulaSimplificationTreeSizeReductionInter, 0.0s 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...