/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/recursive-simple/sum_20x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:55:54,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:55:54,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:55:54,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:55:54,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:55:54,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:55:54,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:55:54,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:55:54,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:55:54,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:55:54,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:55:54,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:55:54,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:55:54,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:55:54,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:55:54,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:55:54,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:55:54,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:55:54,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:55:54,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:55:54,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:55:54,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:55:54,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:55:54,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:55:54,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:55:54,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:55:54,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:55:54,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:55:54,160 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 18:55:54,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:55:54,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:55:54,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:55:54,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:55:54,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:55:54,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:55:54,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:55:54,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:55:54,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:55:54,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:55:54,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:55:54,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:55:54,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:55:54,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:55:54,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:55:54,177 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:55:54,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:55:54,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:55:54,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:55:54,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:55:54,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:55:54,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:55:54,178 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:55:54,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:55:54,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:55:54,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:55:54,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:55:54,531 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:55:54,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c [2020-08-22 18:55:54,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d874bf7/1d920f222aba49908065196388ee0006/FLAG55bf14c12 [2020-08-22 18:55:55,208 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:55:55,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_20x0-1.c [2020-08-22 18:55:55,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d874bf7/1d920f222aba49908065196388ee0006/FLAG55bf14c12 [2020-08-22 18:55:55,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d874bf7/1d920f222aba49908065196388ee0006 [2020-08-22 18:55:55,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:55:55,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:55:55,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:55:55,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:55:55,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:55:55,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4ea78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55, skipping insertion in model container [2020-08-22 18:55:55,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:55:55,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:55:55,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:55:55,788 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:55:55,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:55:55,820 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:55:55,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55 WrapperNode [2020-08-22 18:55:55,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:55:55,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:55:55,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:55:55,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:55:55,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (1/1) ... [2020-08-22 18:55:55,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:55:55,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:55:55,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:55:55,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:55:55,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (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 18:55:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:55:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:55:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-08-22 18:55:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:55:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:55:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-08-22 18:55:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:55:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:55:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:55:56,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:55:56,281 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 18:55:56,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:55:56 BoogieIcfgContainer [2020-08-22 18:55:56,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:55:56,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:55:56,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:55:56,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:55:56,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:55:55" (1/3) ... [2020-08-22 18:55:56,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8f4400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:55:56, skipping insertion in model container [2020-08-22 18:55:56,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:55:55" (2/3) ... [2020-08-22 18:55:56,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8f4400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:55:56, skipping insertion in model container [2020-08-22 18:55:56,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:55:56" (3/3) ... [2020-08-22 18:55:56,302 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_20x0-1.c [2020-08-22 18:55:56,317 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:55:56,328 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:55:56,343 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:55:56,372 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:55:56,372 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:55:56,372 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:55:56,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:55:56,373 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:55:56,373 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:55:56,373 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:55:56,373 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:55:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-08-22 18:55:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 18:55:56,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:55:56,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:55:56,409 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:55:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:55:56,417 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-08-22 18:55:56,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:55:56,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976597525] [2020-08-22 18:55:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:55:56,494 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:55:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:55:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:55:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:55:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 18:55:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:55:56,698 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 18:55:56,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976597525] [2020-08-22 18:55:56,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:55:56,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:55:56,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292063812] [2020-08-22 18:55:56,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:55:56,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:55:56,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:55:56,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:55:56,741 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-08-22 18:55:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:55:57,159 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-08-22 18:55:57,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:55:57,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-22 18:55:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:55:57,176 INFO L225 Difference]: With dead ends: 39 [2020-08-22 18:55:57,177 INFO L226 Difference]: Without dead ends: 25 [2020-08-22 18:55:57,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:55:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-22 18:55:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-22 18:55:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 18:55:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-08-22 18:55:57,236 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-08-22 18:55:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:55:57,237 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-08-22 18:55:57,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:55:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-08-22 18:55:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 18:55:57,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:55:57,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:55:57,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:55:57,242 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:55:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:55:57,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-08-22 18:55:57,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:55:57,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542328570] [2020-08-22 18:55:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:55:57,405 INFO L278 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-08-22 18:55:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:55:57,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:55:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:55:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 18:55:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:55:57,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:55:57,500 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: has to be unsat by construction, we do check only for interpolant computation at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:386) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:100) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:294) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 18:55:57,510 INFO L168 Benchmark]: Toolchain (without parser) took 1968.10 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.2 MB in the beginning and 131.5 MB in the end (delta: -30.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:55:57,511 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 18:55:57,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.15 ms. Allocated memory is still 138.4 MB. Free memory was 100.8 MB in the beginning and 91.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:55:57,514 INFO L168 Benchmark]: Boogie Preprocessor took 29.58 ms. Allocated memory is still 138.4 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:55:57,516 INFO L168 Benchmark]: RCFGBuilder took 436.26 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 90.4 MB in the beginning and 170.8 MB in the end (delta: -80.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:55:57,517 INFO L168 Benchmark]: TraceAbstraction took 1214.73 ms. Allocated memory is still 203.9 MB. Free memory was 170.8 MB in the beginning and 131.5 MB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:55:57,524 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.15 ms. Allocated memory is still 138.4 MB. Free memory was 100.8 MB in the beginning and 91.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.58 ms. Allocated memory is still 138.4 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.26 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 90.4 MB in the beginning and 170.8 MB in the end (delta: -80.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1214.73 ms. Allocated memory is still 203.9 MB. Free memory was 170.8 MB in the beginning and 131.5 MB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: has to be unsat by construction, we do check only for interpolant computation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: has to be unsat by construction, we do check only for interpolant computation: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:386) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...