/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/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:45:43,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:45:43,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:45:43,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:45:43,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:45:43,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:45:43,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:45:43,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:45:43,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:45:43,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:45:43,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:45:43,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:45:43,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:45:43,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:45:43,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:45:43,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:45:43,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:45:43,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:45:43,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:45:43,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:45:43,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:45:43,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:45:43,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:45:43,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:45:43,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:45:43,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:45:43,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:45:43,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:45:43,476 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 19:45:43,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:45:43,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:45:43,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:45:43,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:45:43,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:45:43,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:45:43,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:45:43,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:45:43,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:45:43,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:45:43,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:45:43,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:45:43,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:45:43,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:45:43,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:45:43,504 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:45:43,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:45:43,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:45:43,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:45:43,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:45:43,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:45:43,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:45:43,506 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:45:43,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:45:43,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:45:43,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:45:43,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:45:43,808 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:45:43,808 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-08-22 19:45:43,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a603c36b/d50717d154284075a0286195bcb8689b/FLAGd6b3ea14d [2020-08-22 19:45:44,423 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:45:44,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2020-08-22 19:45:44,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a603c36b/d50717d154284075a0286195bcb8689b/FLAGd6b3ea14d [2020-08-22 19:45:44,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a603c36b/d50717d154284075a0286195bcb8689b [2020-08-22 19:45:44,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:45:44,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:45:44,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:45:44,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:45:44,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:45:44,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:45:44" (1/1) ... [2020-08-22 19:45:44,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593ae2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:44, skipping insertion in model container [2020-08-22 19:45:44,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:45:44" (1/1) ... [2020-08-22 19:45:44,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:45:44,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:45:45,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:45:45,142 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:45:45,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:45:45,198 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:45:45,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45 WrapperNode [2020-08-22 19:45:45,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:45:45,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:45:45,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:45:45,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:45:45,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (1/1) ... [2020-08-22 19:45:45,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (1/1) ... [2020-08-22 19:45:45,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (1/1) ... [2020-08-22 19:45:45,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (1/1) ... [2020-08-22 19:45:45,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (1/1) ... [2020-08-22 19:45:45,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (1/1) ... [2020-08-22 19:45:45,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (1/1) ... [2020-08-22 19:45:45,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:45:45,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:45:45,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:45:45,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:45:45,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (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 19:45:45,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:45:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:45:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:45:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:45:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:45:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:45:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:45:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 19:45:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:45:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:45:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:45:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:45:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:45:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:45:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:45:45,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:45:45,806 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 19:45:45,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:45:45 BoogieIcfgContainer [2020-08-22 19:45:45,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:45:45,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:45:45,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:45:45,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:45:45,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:45:44" (1/3) ... [2020-08-22 19:45:45,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bb8c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:45:45, skipping insertion in model container [2020-08-22 19:45:45,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:45" (2/3) ... [2020-08-22 19:45:45,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bb8c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:45:45, skipping insertion in model container [2020-08-22 19:45:45,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:45:45" (3/3) ... [2020-08-22 19:45:45,822 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-08-22 19:45:45,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:45:45,842 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:45:45,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:45:45,894 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:45:45,894 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:45:45,894 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:45:45,894 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:45:45,894 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:45:45,895 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:45:45,895 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:45:45,895 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:45:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-08-22 19:45:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 19:45:45,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:45,923 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] [2020-08-22 19:45:45,923 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:45,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:45,929 INFO L82 PathProgramCache]: Analyzing trace with hash -36140131, now seen corresponding path program 1 times [2020-08-22 19:45:45,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:45,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961514895] [2020-08-22 19:45:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:46,003 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:46,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:46,212 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 19:45:46,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961514895] [2020-08-22 19:45:46,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:46,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:45:46,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725623373] [2020-08-22 19:45:46,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:45:46,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:46,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:45:46,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:45:46,245 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-08-22 19:45:46,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:46,470 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2020-08-22 19:45:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:45:46,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-22 19:45:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:46,483 INFO L225 Difference]: With dead ends: 113 [2020-08-22 19:45:46,483 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 19:45:46,488 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 [2020-08-22 19:45:46,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 19:45:46,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-22 19:45:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 19:45:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-08-22 19:45:46,545 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 28 [2020-08-22 19:45:46,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:46,546 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-08-22 19:45:46,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:45:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-08-22 19:45:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 19:45:46,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:46,548 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] [2020-08-22 19:45:46,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:45:46,549 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:46,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1098625525, now seen corresponding path program 1 times [2020-08-22 19:45:46,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:46,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291371426] [2020-08-22 19:45:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:46,554 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:46,770 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 19:45:46,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291371426] [2020-08-22 19:45:46,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:46,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:45:46,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715418617] [2020-08-22 19:45:46,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:45:46,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:46,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:45:46,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:45:46,779 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 5 states. [2020-08-22 19:45:47,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:47,145 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2020-08-22 19:45:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:45:47,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-22 19:45:47,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:47,151 INFO L225 Difference]: With dead ends: 128 [2020-08-22 19:45:47,151 INFO L226 Difference]: Without dead ends: 87 [2020-08-22 19:45:47,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:45:47,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-08-22 19:45:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-08-22 19:45:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 19:45:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-08-22 19:45:47,171 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 28 [2020-08-22 19:45:47,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:47,172 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-08-22 19:45:47,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:45:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-08-22 19:45:47,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 19:45:47,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:47,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:47,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:45:47,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:47,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:47,176 INFO L82 PathProgramCache]: Analyzing trace with hash -362895398, now seen corresponding path program 1 times [2020-08-22 19:45:47,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:47,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405761505] [2020-08-22 19:45:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:47,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:45:47,208 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:293) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 19:45:47,214 INFO L168 Benchmark]: Toolchain (without parser) took 2392.31 ms. Allocated memory was 139.5 MB in the beginning and 236.5 MB in the end (delta: 97.0 MB). Free memory was 103.3 MB in the beginning and 200.3 MB in the end (delta: -97.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:45:47,215 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 19:45:47,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.56 ms. Allocated memory is still 139.5 MB. Free memory was 103.1 MB in the beginning and 92.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:47,217 INFO L168 Benchmark]: Boogie Preprocessor took 161.96 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 92.7 MB in the beginning and 181.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:47,218 INFO L168 Benchmark]: RCFGBuilder took 449.65 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 161.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:47,220 INFO L168 Benchmark]: TraceAbstraction took 1396.96 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 160.5 MB in the beginning and 200.3 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:45:47,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.56 ms. Allocated memory is still 139.5 MB. Free memory was 103.1 MB in the beginning and 92.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.96 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 92.7 MB in the beginning and 181.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.65 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 161.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1396.96 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 160.5 MB in the beginning and 200.3 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...