/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/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:48:15,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:48:15,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:48:15,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:48:15,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:48:15,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:48:15,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:48:15,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:48:15,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:48:15,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:48:15,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:48:15,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:48:15,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:48:15,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:48:15,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:48:15,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:48:15,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:48:15,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:48:15,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:48:15,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:48:15,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:48:15,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:48:15,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:48:15,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:48:15,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:48:15,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:48:15,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:48:15,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:48:15,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:48:15,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:48:15,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:48:15,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:48:15,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:48:15,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:48:15,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:48:15,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:48:15,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:48:15,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:48:15,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:48:15,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:48:15,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:48:15,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:48:15,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:48:15,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:48:15,626 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:48:15,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:48:15,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:48:15,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:48:15,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:48:15,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:48:15,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:48:15,628 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:48:15,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:48:16,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:48:16,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:48:16,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:48:16,007 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:48:16,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2020-08-22 19:48:16,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00355ba67/3494e141868a40d48e1b1258429bca60/FLAG1c1fe765f [2020-08-22 19:48:16,599 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:48:16,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2020-08-22 19:48:16,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00355ba67/3494e141868a40d48e1b1258429bca60/FLAG1c1fe765f [2020-08-22 19:48:16,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00355ba67/3494e141868a40d48e1b1258429bca60 [2020-08-22 19:48:16,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:48:16,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:48:16,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:48:16,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:48:16,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:48:16,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:48:16" (1/1) ... [2020-08-22 19:48:16,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4e45ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:16, skipping insertion in model container [2020-08-22 19:48:16,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:48:16" (1/1) ... [2020-08-22 19:48:17,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:48:17,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:48:17,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:48:17,201 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:48:17,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:48:17,231 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:48:17,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17 WrapperNode [2020-08-22 19:48:17,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:48:17,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:48:17,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:48:17,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:48:17,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (1/1) ... [2020-08-22 19:48:17,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (1/1) ... [2020-08-22 19:48:17,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (1/1) ... [2020-08-22 19:48:17,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (1/1) ... [2020-08-22 19:48:17,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (1/1) ... [2020-08-22 19:48:17,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (1/1) ... [2020-08-22 19:48:17,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (1/1) ... [2020-08-22 19:48:17,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:48:17,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:48:17,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:48:17,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:48:17,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (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 [2020-08-22 19:48:17,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:48:17,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:48:17,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 19:48:17,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:48:17,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:48:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:48:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:48:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 19:48:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:48:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:48:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:48:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:48:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:48:17,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:48:17,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 19:48:17,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:48:17 BoogieIcfgContainer [2020-08-22 19:48:17,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:48:17,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:48:17,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:48:17,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:48:17,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:48:16" (1/3) ... [2020-08-22 19:48:17,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c84e3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:48:17, skipping insertion in model container [2020-08-22 19:48:17,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:17" (2/3) ... [2020-08-22 19:48:17,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c84e3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:48:17, skipping insertion in model container [2020-08-22 19:48:17,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:48:17" (3/3) ... [2020-08-22 19:48:17,671 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2020-08-22 19:48:17,683 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:48:17,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:48:17,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:48:17,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:48:17,733 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:48:17,733 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:48:17,733 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:48:17,734 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:48:17,734 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:48:17,734 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:48:17,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:48:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-22 19:48:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 19:48:17,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:17,765 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] [2020-08-22 19:48:17,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:17,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1378758603, now seen corresponding path program 1 times [2020-08-22 19:48:17,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:17,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530181148] [2020-08-22 19:48:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:17,834 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:18,167 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2020-08-22 19:48:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:18,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530181148] [2020-08-22 19:48:18,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:18,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:48:18,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083266117] [2020-08-22 19:48:18,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 19:48:18,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:18,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 19:48:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:48:18,314 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 8 states. [2020-08-22 19:48:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:18,645 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-08-22 19:48:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 19:48:18,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-08-22 19:48:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:18,660 INFO L225 Difference]: With dead ends: 58 [2020-08-22 19:48:18,660 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 19:48:18,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:48:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 19:48:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-08-22 19:48:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 19:48:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-08-22 19:48:18,710 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 21 [2020-08-22 19:48:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:18,710 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-08-22 19:48:18,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 19:48:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-08-22 19:48:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 19:48:18,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:18,712 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] [2020-08-22 19:48:18,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:48:18,713 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1865209823, now seen corresponding path program 1 times [2020-08-22 19:48:18,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:18,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260625057] [2020-08-22 19:48:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:20,903 INFO L278 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-08-22 19:48:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:21,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260625057] [2020-08-22 19:48:21,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:21,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:48:21,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965648028] [2020-08-22 19:48:21,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:48:21,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:21,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:48:21,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:48:21,271 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-08-22 19:48:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:21,494 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-08-22 19:48:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 19:48:21,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-08-22 19:48:21,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:21,496 INFO L225 Difference]: With dead ends: 27 [2020-08-22 19:48:21,496 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 19:48:21,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-08-22 19:48:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 19:48:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 19:48:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 19:48:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 19:48:21,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-08-22 19:48:21,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:21,500 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 19:48:21,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:48:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 19:48:21,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 19:48:21,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:48:21,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 19:48:21,734 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:48:21,734 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:48:21,734 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:48:21,735 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 19:48:21,735 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 19:48:21,735 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:48:21,735 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:21,735 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:21,735 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 19:48:21,736 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-08-22 19:48:21,736 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:21,736 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (<= 0 main_~b~0) [2020-08-22 19:48:21,736 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 27) the Hoare annotation is: true [2020-08-22 19:48:21,736 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (+ main_~res~0 main_~cnt~0 1))) (and (< 0 (+ main_~cnt~0 1)) (<= .cse0 .cse1) (<= .cse1 .cse0) (<= 0 main_~b~0))) [2020-08-22 19:48:21,737 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (<= 0 main_~b~0) [2020-08-22 19:48:21,737 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 24) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= 0 main_~b~0) (<= .cse1 .cse0) (<= main_~res~0 .cse0))) [2020-08-22 19:48:21,737 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 24) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 main_~res~0) (<= 0 main_~b~0) (<= main_~res~0 .cse0))) [2020-08-22 19:48:21,737 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-08-22 19:48:21,737 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-08-22 19:48:21,738 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 19:48:21,738 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-08-22 19:48:21,738 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-08-22 19:48:21,738 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 27) the Hoare annotation is: true [2020-08-22 19:48:21,738 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-08-22 19:48:21,739 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (< 0 main_~cnt~0) (<= 0 main_~b~0) (<= .cse1 .cse0))) [2020-08-22 19:48:21,739 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= main_~a~0 main_~res~0) (<= main_~res~0 (+ main_~a~0 main_~b~0)) (<= main_~res~0 main_~a~0)) [2020-08-22 19:48:21,739 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-08-22 19:48:21,739 INFO L271 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: true [2020-08-22 19:48:21,739 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-22 19:48:21,740 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-08-22 19:48:21,740 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-08-22 19:48:21,740 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-08-22 19:48:21,740 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 19:48:21,741 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:48:21,741 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:48:21,741 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:48:21,741 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:48:21,741 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:48:21,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:48:21 BoogieIcfgContainer [2020-08-22 19:48:21,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:48:21,765 INFO L168 Benchmark]: Toolchain (without parser) took 4775.43 ms. Allocated memory was 136.8 MB in the beginning and 229.6 MB in the end (delta: 92.8 MB). Free memory was 100.5 MB in the beginning and 128.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:21,767 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 19:48:21,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.58 ms. Allocated memory is still 136.8 MB. Free memory was 100.3 MB in the beginning and 90.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:21,769 INFO L168 Benchmark]: Boogie Preprocessor took 125.21 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 180.3 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:21,770 INFO L168 Benchmark]: RCFGBuilder took 304.30 ms. Allocated memory is still 200.8 MB. Free memory was 180.3 MB in the beginning and 166.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:21,771 INFO L168 Benchmark]: TraceAbstraction took 4100.19 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 166.1 MB in the beginning and 128.7 MB in the end (delta: 37.4 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:21,775 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.58 ms. Allocated memory is still 136.8 MB. Free memory was 100.3 MB in the beginning and 90.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.21 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 180.3 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 304.30 ms. Allocated memory is still 200.8 MB. Free memory was 180.3 MB in the beginning and 166.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4100.19 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 166.1 MB in the beginning and 128.7 MB in the end (delta: 37.4 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 21]: Loop Invariant Derived loop invariant: ((a + b <= res + cnt && 0 <= b) && res + cnt <= a + b) && res <= a + b - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 40 SDslu, 197 SDs, 0 SdLazy, 115 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 45 PreInvPairs, 64 NumberOfFragments, 152 HoareAnnotationTreeSize, 45 FomulaSimplifications, 102 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 33 FomulaSimplificationsInter, 147 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...