/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/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:45:33,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:45:33,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:45:33,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 19:45:33,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:45:33,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:45:33,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:45:33,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:45:33,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:45:33,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:45:33,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:45:33,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:45:33,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:45:33,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:45:33,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:45:33,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:45:33,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:45:33,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:45:33,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:45:33,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:45:33,179 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 19:45:33,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:45:33,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:45:33,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:45:33,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:45:33,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:45:33,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:45:33,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:45:33,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:45:33,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:45:33,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:45:33,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:45:33,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:45:33,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:45:33,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:45:33,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:45:33,204 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:45:33,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:45:33,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:45:33,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:45:33,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:45:33,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:45:33,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:45:33,205 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:45:33,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:45:33,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:45:33,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:45:33,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:45:33,541 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:45:33,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2020-08-22 19:45:33,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87dd288cf/45bfee9536da4476bf0ec2280112718f/FLAGffb50a894 [2020-08-22 19:45:34,109 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:45:34,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2020-08-22 19:45:34,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87dd288cf/45bfee9536da4476bf0ec2280112718f/FLAGffb50a894 [2020-08-22 19:45:34,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87dd288cf/45bfee9536da4476bf0ec2280112718f [2020-08-22 19:45:34,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:45:34,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:45:34,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:45:34,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:45:34,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:45:34,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f21738f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34, skipping insertion in model container [2020-08-22 19:45:34,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:45:34,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:45:34,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:45:34,707 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:45:34,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:45:34,738 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:45:34,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34 WrapperNode [2020-08-22 19:45:34,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:45:34,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:45:34,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:45:34,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:45:34,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (1/1) ... [2020-08-22 19:45:34,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:45:34,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:45:34,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:45:34,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:45:34,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (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 19:45:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:45:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:45:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:45:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:45:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:45:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:45:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 19:45:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:45:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:45:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:45:35,103 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:45:35,104 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 19:45:35,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:45:35 BoogieIcfgContainer [2020-08-22 19:45:35,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:45:35,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:45:35,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:45:35,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:45:35,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:45:34" (1/3) ... [2020-08-22 19:45:35,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbb1f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:45:35, skipping insertion in model container [2020-08-22 19:45:35,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:34" (2/3) ... [2020-08-22 19:45:35,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbb1f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:45:35, skipping insertion in model container [2020-08-22 19:45:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:45:35" (3/3) ... [2020-08-22 19:45:35,117 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2020-08-22 19:45:35,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:45:35,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:45:35,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:45:35,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:45:35,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:45:35,217 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:45:35,218 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:45:35,218 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:45:35,219 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:45:35,219 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:45:35,219 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:45:35,235 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-08-22 19:45:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 19:45:35,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:35,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:35,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:35,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1882057920, now seen corresponding path program 1 times [2020-08-22 19:45:35,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:35,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162771276] [2020-08-22 19:45:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:35,328 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:35,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:35,402 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 19:45:35,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162771276] [2020-08-22 19:45:35,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:35,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 19:45:35,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159750775] [2020-08-22 19:45:35,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 19:45:35,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:35,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 19:45:35,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 19:45:35,431 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-08-22 19:45:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:35,458 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-22 19:45:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 19:45:35,460 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-08-22 19:45:35,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:35,469 INFO L225 Difference]: With dead ends: 37 [2020-08-22 19:45:35,469 INFO L226 Difference]: Without dead ends: 20 [2020-08-22 19:45:35,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 19:45:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-22 19:45:35,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-08-22 19:45:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-22 19:45:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-08-22 19:45:35,514 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2020-08-22 19:45:35,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:35,515 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-08-22 19:45:35,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 19:45:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-08-22 19:45:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 19:45:35,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:35,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:35,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:45:35,518 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:35,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:35,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1869128626, now seen corresponding path program 1 times [2020-08-22 19:45:35,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:35,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58880842] [2020-08-22 19:45:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:35,521 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:35,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:35,622 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 19:45:35,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58880842] [2020-08-22 19:45:35,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:35,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:45:35,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682483783] [2020-08-22 19:45:35,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:45:35,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:35,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:45:35,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:45:35,626 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-08-22 19:45:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:35,680 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-08-22 19:45:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:45:35,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 19:45:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:35,683 INFO L225 Difference]: With dead ends: 31 [2020-08-22 19:45:35,683 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 19:45:35,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 19:45:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 19:45:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-22 19:45:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 19:45:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-22 19:45:35,693 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14 [2020-08-22 19:45:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:35,694 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-22 19:45:35,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:45:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-22 19:45:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 19:45:35,695 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:35,696 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] [2020-08-22 19:45:35,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:45:35,696 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:35,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1535432394, now seen corresponding path program 1 times [2020-08-22 19:45:35,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:35,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005402834] [2020-08-22 19:45:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:37,939 INFO L278 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-08-22 19:45:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:38,234 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 19:45:44,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005402834] [2020-08-22 19:45:44,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:44,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 19:45:44,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919649027] [2020-08-22 19:45:44,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 19:45:44,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:44,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 19:45:44,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=186, Unknown=1, NotChecked=0, Total=240 [2020-08-22 19:45:44,291 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 13 states. [2020-08-22 19:45:48,184 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 113 DAG size of output: 110 [2020-08-22 19:45:50,893 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2020-08-22 19:45:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:53,373 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-08-22 19:45:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 19:45:53,375 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-08-22 19:45:53,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:53,377 INFO L225 Difference]: With dead ends: 50 [2020-08-22 19:45:53,377 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 19:45:53,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2020-08-22 19:45:53,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 19:45:53,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-08-22 19:45:53,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 19:45:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-22 19:45:53,392 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-08-22 19:45:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:53,392 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-22 19:45:53,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 19:45:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-22 19:45:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 19:45:53,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:53,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:53,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:45:53,394 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:53,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:53,395 INFO L82 PathProgramCache]: Analyzing trace with hash -927596731, now seen corresponding path program 1 times [2020-08-22 19:45:53,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:53,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193545642] [2020-08-22 19:45:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:57,627 INFO L278 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-08-22 19:45:57,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:45:57,632 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: must have same length at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.pairwiseEquality(SmtUtils.java:418) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.constructEpsilon(AcceleratedInterpolation.java:334) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:420) 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 19:45:57,640 INFO L168 Benchmark]: Toolchain (without parser) took 23139.87 ms. Allocated memory was 140.0 MB in the beginning and 234.4 MB in the end (delta: 94.4 MB). Free memory was 104.8 MB in the beginning and 90.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 108.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:57,644 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:45:57,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.12 ms. Allocated memory is still 140.0 MB. Free memory was 104.6 MB in the beginning and 95.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:57,647 INFO L168 Benchmark]: Boogie Preprocessor took 109.68 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 95.2 MB in the beginning and 182.0 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:57,648 INFO L168 Benchmark]: RCFGBuilder took 258.70 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 169.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:57,650 INFO L168 Benchmark]: TraceAbstraction took 22528.17 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 169.8 MB in the beginning and 90.3 MB in the end (delta: 79.5 MB). Peak memory consumption was 111.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:57,659 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.12 ms. Allocated memory is still 140.0 MB. Free memory was 104.6 MB in the beginning and 95.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.68 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 95.2 MB in the beginning and 182.0 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 258.70 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 169.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22528.17 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 169.8 MB in the beginning and 90.3 MB in the end (delta: 79.5 MB). Peak memory consumption was 111.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: must have same length de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: must have same length: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.pairwiseEquality(SmtUtils.java:418) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...